/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 00:49:22,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 00:49:22,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 00:49:22,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-29 00:49:22,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 00:49:22,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 00:49:22,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 00:49:22,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 00:49:22,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 00:49:22,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 00:49:22,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 00:49:22,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 00:49:22,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 00:49:22,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 00:49:22,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 00:49:22,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 00:49:22,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 00:49:22,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 00:49:22,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 00:49:22,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 00:49:22,320 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-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 00:49:22,353 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 00:49:22,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 00:49:22,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 00:49:22,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 00:49:22,355 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 00:49:22,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 00:49:22,356 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 00:49:22,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 00:49:22,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 00:49:22,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 00:49:22,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 00:49:22,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 00:49:22,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 00:49:22,357 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 00:49:22,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 00:49:22,358 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 00:49:22,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 00:49:22,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 00:49:22,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 00:49:22,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 00:49:22,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 00:49:22,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 00:49:22,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 00:49:22,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 00:49:22,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 00:49:22,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 00:49:22,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 00:49:22,360 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 00:49:22,360 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 00:49:22,361 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 00:49:22,361 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 00:49:22,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 00:49:22,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 00:49:22,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 00:49:22,780 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-29 00:49:22,781 INFO L275 PluginConnector]: CDTParser initialized [2021-04-29 00:49:22,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i [2021-04-29 00:49:22,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c17ac94/d50260ef3bd542e9b8c6cf0038dc35e3/FLAGc0d80681c [2021-04-29 00:49:23,544 INFO L306 CDTParser]: Found 1 translation units. [2021-04-29 00:49:23,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i [2021-04-29 00:49:23,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c17ac94/d50260ef3bd542e9b8c6cf0038dc35e3/FLAGc0d80681c [2021-04-29 00:49:23,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c17ac94/d50260ef3bd542e9b8c6cf0038dc35e3 [2021-04-29 00:49:23,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 00:49:23,912 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-29 00:49:23,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-29 00:49:23,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-29 00:49:23,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-29 00:49:23,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 12:49:23" (1/1) ... [2021-04-29 00:49:23,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6506969c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:23, skipping insertion in model container [2021-04-29 00:49:23,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 12:49:23" (1/1) ... [2021-04-29 00:49:23,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-29 00:49:23,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-29 00:49:24,157 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i[949,962] [2021-04-29 00:49:24,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 00:49:24,345 INFO L203 MainTranslator]: Completed pre-run [2021-04-29 00:49:24,362 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i[949,962] [2021-04-29 00:49:24,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 00:49:24,589 INFO L208 MainTranslator]: Completed translation [2021-04-29 00:49:24,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:24 WrapperNode [2021-04-29 00:49:24,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-29 00:49:24,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 00:49:24,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 00:49:24,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 00:49:24,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:24" (1/1) ... [2021-04-29 00:49:24,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:24" (1/1) ... [2021-04-29 00:49:24,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 00:49:24,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 00:49:24,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 00:49:24,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 00:49:24,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:24" (1/1) ... [2021-04-29 00:49:24,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:24" (1/1) ... [2021-04-29 00:49:24,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:24" (1/1) ... [2021-04-29 00:49:24,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:24" (1/1) ... [2021-04-29 00:49:24,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:24" (1/1) ... [2021-04-29 00:49:24,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:24" (1/1) ... [2021-04-29 00:49:24,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:24" (1/1) ... [2021-04-29 00:49:24,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 00:49:24,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 00:49:24,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 00:49:24,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 00:49:24,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 00:49:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-29 00:49:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-29 00:49:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-29 00:49:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-29 00:49:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-29 00:49:24,842 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-29 00:49:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-29 00:49:24,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-29 00:49:24,843 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-29 00:49:24,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-29 00:49:24,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-29 00:49:24,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-29 00:49:24,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 00:49:24,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 00:49:24,846 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 00:49:25,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 00:49:25,463 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-29 00:49:25,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 12:49:25 BoogieIcfgContainer [2021-04-29 00:49:25,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 00:49:25,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 00:49:25,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 00:49:25,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 00:49:25,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 12:49:23" (1/3) ... [2021-04-29 00:49:25,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7450edc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 12:49:25, skipping insertion in model container [2021-04-29 00:49:25,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:24" (2/3) ... [2021-04-29 00:49:25,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7450edc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 12:49:25, skipping insertion in model container [2021-04-29 00:49:25,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 12:49:25" (3/3) ... [2021-04-29 00:49:25,479 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_rmo.opt.i [2021-04-29 00:49:25,487 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 00:49:25,493 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 00:49:25,494 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 00:49:25,554 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,555 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,555 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,555 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,555 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,556 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,556 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,556 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,557 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,557 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,557 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,557 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,559 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,559 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,559 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,559 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,560 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,560 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,560 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,560 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,565 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,565 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,565 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,566 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,567 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,567 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,568 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,569 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,569 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,576 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,578 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,578 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,578 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,593 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,593 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,593 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,593 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,597 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,597 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,597 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,597 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:25,601 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-29 00:49:25,629 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-29 00:49:25,678 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 00:49:25,679 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 00:49:25,679 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 00:49:25,679 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 00:49:25,679 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 00:49:25,680 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 00:49:25,680 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 00:49:25,680 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 00:49:25,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2021-04-29 00:49:25,783 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2021-04-29 00:49:25,784 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:49:25,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-04-29 00:49:25,793 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 76 transitions, 167 flow [2021-04-29 00:49:25,816 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 61 transitions, 131 flow [2021-04-29 00:49:25,818 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:49:25,839 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 61 transitions, 131 flow [2021-04-29 00:49:25,844 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 61 transitions, 131 flow [2021-04-29 00:49:25,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 61 transitions, 131 flow [2021-04-29 00:49:25,887 INFO L129 PetriNetUnfolder]: 1/61 cut-off events. [2021-04-29 00:49:25,887 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:49:25,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 61 events. 1/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-04-29 00:49:25,892 INFO L146 LiptonReduction]: Number of co-enabled transitions 864 [2021-04-29 00:49:30,034 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-29 00:49:30,250 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-29 00:49:30,426 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-29 00:49:30,622 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-29 00:49:30,817 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-29 00:49:30,987 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-29 00:49:31,204 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:49:31,420 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:49:31,883 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:49:32,043 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:49:33,324 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-04-29 00:49:33,430 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-29 00:49:33,657 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-04-29 00:49:34,803 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-04-29 00:49:34,925 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-04-29 00:49:35,140 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-04-29 00:49:35,860 INFO L158 LiptonReduction]: Checked pairs total: 5722 [2021-04-29 00:49:35,860 INFO L160 LiptonReduction]: Total number of compositions: 95 [2021-04-29 00:49:35,864 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10048 [2021-04-29 00:49:35,884 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2021-04-29 00:49:35,884 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:49:35,885 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:49:35,885 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:49:35,886 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:49:35,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:49:35,891 INFO L82 PathProgramCache]: Analyzing trace with hash 863628178, now seen corresponding path program 1 times [2021-04-29 00:49:35,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:49:35,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770980943] [2021-04-29 00:49:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:49:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:49:36,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:36,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:36,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:36,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 00:49:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:49:36,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770980943] [2021-04-29 00:49:36,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:49:36,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:49:36,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308969474] [2021-04-29 00:49:36,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:49:36,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:49:36,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:49:36,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:49:36,267 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 171 [2021-04-29 00:49:36,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 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) [2021-04-29 00:49:36,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:49:36,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 171 [2021-04-29 00:49:36,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:49:37,032 INFO L129 PetriNetUnfolder]: 2880/4444 cut-off events. [2021-04-29 00:49:37,032 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:49:37,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8871 conditions, 4444 events. 2880/4444 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 936. Compared 31953 event pairs, 1485 based on Foata normal form. 64/1296 useless extension candidates. Maximal degree in co-relation 8823. Up to 3322 conditions per place. [2021-04-29 00:49:37,059 INFO L132 encePairwiseOnDemand]: 132/171 looper letters, 11 selfloop transitions, 10 changer transitions 66/105 dead transitions. [2021-04-29 00:49:37,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 105 transitions, 373 flow [2021-04-29 00:49:37,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 00:49:37,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 00:49:37,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 644 transitions. [2021-04-29 00:49:37,094 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7532163742690059 [2021-04-29 00:49:37,095 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 644 transitions. [2021-04-29 00:49:37,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 644 transitions. [2021-04-29 00:49:37,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:49:37,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 644 transitions. [2021-04-29 00:49:37,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 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) [2021-04-29 00:49:37,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:49:37,126 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:49:37,129 INFO L185 Difference]: Start difference. First operand has 80 places, 70 transitions, 149 flow. Second operand 5 states and 644 transitions. [2021-04-29 00:49:37,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 105 transitions, 373 flow [2021-04-29 00:49:37,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 105 transitions, 370 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-04-29 00:49:37,138 INFO L241 Difference]: Finished difference. Result has 84 places, 39 transitions, 156 flow [2021-04-29 00:49:37,141 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=84, PETRI_TRANSITIONS=39} [2021-04-29 00:49:37,142 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, 4 predicate places. [2021-04-29 00:49:37,142 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:49:37,142 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 39 transitions, 156 flow [2021-04-29 00:49:37,143 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 39 transitions, 156 flow [2021-04-29 00:49:37,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 156 flow [2021-04-29 00:49:37,209 INFO L129 PetriNetUnfolder]: 351/559 cut-off events. [2021-04-29 00:49:37,209 INFO L130 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2021-04-29 00:49:37,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1588 conditions, 559 events. 351/559 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 2787 event pairs, 189 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 1578. Up to 478 conditions per place. [2021-04-29 00:49:37,220 INFO L146 LiptonReduction]: Number of co-enabled transitions 582 [2021-04-29 00:49:37,255 INFO L158 LiptonReduction]: Checked pairs total: 608 [2021-04-29 00:49:37,255 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:49:37,256 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 114 [2021-04-29 00:49:37,258 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 156 flow [2021-04-29 00:49:37,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 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) [2021-04-29 00:49:37,260 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:49:37,260 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:49:37,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 00:49:37,261 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:49:37,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:49:37,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1449704499, now seen corresponding path program 1 times [2021-04-29 00:49:37,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:49:37,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427926004] [2021-04-29 00:49:37,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:49:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:49:37,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:37,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:37,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:37,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:37,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:37,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 00:49:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:49:37,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427926004] [2021-04-29 00:49:37,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:49:37,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:49:37,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102984944] [2021-04-29 00:49:37,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 00:49:37,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:49:37,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 00:49:37,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-29 00:49:37,387 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 171 [2021-04-29 00:49:37,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 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) [2021-04-29 00:49:37,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:49:37,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 171 [2021-04-29 00:49:37,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:49:37,552 INFO L129 PetriNetUnfolder]: 324/577 cut-off events. [2021-04-29 00:49:37,552 INFO L130 PetriNetUnfolder]: For 231/294 co-relation queries the response was YES. [2021-04-29 00:49:37,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2202 conditions, 577 events. 324/577 cut-off events. For 231/294 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 3208 event pairs, 54 based on Foata normal form. 68/336 useless extension candidates. Maximal degree in co-relation 2190. Up to 505 conditions per place. [2021-04-29 00:49:37,559 INFO L132 encePairwiseOnDemand]: 159/171 looper letters, 11 selfloop transitions, 19 changer transitions 19/67 dead transitions. [2021-04-29 00:49:37,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 67 transitions, 420 flow [2021-04-29 00:49:37,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 00:49:37,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 00:49:37,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 717 transitions. [2021-04-29 00:49:37,562 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6988304093567251 [2021-04-29 00:49:37,563 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 717 transitions. [2021-04-29 00:49:37,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 717 transitions. [2021-04-29 00:49:37,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:49:37,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 717 transitions. [2021-04-29 00:49:37,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.5) internal successors, (717), 6 states have internal predecessors, (717), 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) [2021-04-29 00:49:37,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 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) [2021-04-29 00:49:37,570 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 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) [2021-04-29 00:49:37,570 INFO L185 Difference]: Start difference. First operand has 42 places, 39 transitions, 156 flow. Second operand 6 states and 717 transitions. [2021-04-29 00:49:37,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 67 transitions, 420 flow [2021-04-29 00:49:37,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 408 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-04-29 00:49:37,579 INFO L241 Difference]: Finished difference. Result has 48 places, 48 transitions, 296 flow [2021-04-29 00:49:37,579 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2021-04-29 00:49:37,580 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -32 predicate places. [2021-04-29 00:49:37,580 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:49:37,581 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 48 transitions, 296 flow [2021-04-29 00:49:37,581 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 48 transitions, 296 flow [2021-04-29 00:49:37,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 48 transitions, 296 flow [2021-04-29 00:49:37,636 INFO L129 PetriNetUnfolder]: 243/433 cut-off events. [2021-04-29 00:49:37,636 INFO L130 PetriNetUnfolder]: For 381/429 co-relation queries the response was YES. [2021-04-29 00:49:37,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1924 conditions, 433 events. 243/433 cut-off events. For 381/429 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 2323 event pairs, 54 based on Foata normal form. 3/219 useless extension candidates. Maximal degree in co-relation 1911. Up to 361 conditions per place. [2021-04-29 00:49:37,643 INFO L146 LiptonReduction]: Number of co-enabled transitions 618 [2021-04-29 00:49:37,688 INFO L158 LiptonReduction]: Checked pairs total: 836 [2021-04-29 00:49:37,688 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:49:37,688 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 108 [2021-04-29 00:49:37,690 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 296 flow [2021-04-29 00:49:37,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 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) [2021-04-29 00:49:37,691 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:49:37,691 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:49:37,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 00:49:37,692 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:49:37,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:49:37,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1747621993, now seen corresponding path program 1 times [2021-04-29 00:49:37,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:49:37,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391658125] [2021-04-29 00:49:37,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:49:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:49:37,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:37,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:49:37,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:37,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:37,766 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:49:37,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:49:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:49:37,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391658125] [2021-04-29 00:49:37,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:49:37,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:49:37,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002768379] [2021-04-29 00:49:37,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:49:37,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:49:37,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:49:37,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:49:37,779 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 171 [2021-04-29 00:49:37,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 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) [2021-04-29 00:49:37,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:49:37,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 171 [2021-04-29 00:49:37,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:49:37,939 INFO L129 PetriNetUnfolder]: 468/927 cut-off events. [2021-04-29 00:49:37,939 INFO L130 PetriNetUnfolder]: For 1356/1476 co-relation queries the response was YES. [2021-04-29 00:49:37,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4076 conditions, 927 events. 468/927 cut-off events. For 1356/1476 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 6311 event pairs, 91 based on Foata normal form. 80/552 useless extension candidates. Maximal degree in co-relation 4061. Up to 763 conditions per place. [2021-04-29 00:49:37,952 INFO L132 encePairwiseOnDemand]: 166/171 looper letters, 7 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2021-04-29 00:49:37,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 334 flow [2021-04-29 00:49:37,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:49:37,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:49:37,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 468 transitions. [2021-04-29 00:49:37,955 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2021-04-29 00:49:37,955 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 468 transitions. [2021-04-29 00:49:37,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 468 transitions. [2021-04-29 00:49:37,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:49:37,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 468 transitions. [2021-04-29 00:49:37,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2021-04-29 00:49:37,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 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) [2021-04-29 00:49:37,960 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 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) [2021-04-29 00:49:37,960 INFO L185 Difference]: Start difference. First operand has 46 places, 48 transitions, 296 flow. Second operand 4 states and 468 transitions. [2021-04-29 00:49:37,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 334 flow [2021-04-29 00:49:37,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 252 flow, removed 31 selfloop flow, removed 4 redundant places. [2021-04-29 00:49:37,999 INFO L241 Difference]: Finished difference. Result has 47 places, 51 transitions, 247 flow [2021-04-29 00:49:37,999 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2021-04-29 00:49:37,999 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -33 predicate places. [2021-04-29 00:49:38,000 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:49:38,000 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 51 transitions, 247 flow [2021-04-29 00:49:38,000 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 51 transitions, 247 flow [2021-04-29 00:49:38,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 51 transitions, 247 flow [2021-04-29 00:49:38,105 INFO L129 PetriNetUnfolder]: 474/949 cut-off events. [2021-04-29 00:49:38,105 INFO L130 PetriNetUnfolder]: For 550/644 co-relation queries the response was YES. [2021-04-29 00:49:38,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3045 conditions, 949 events. 474/949 cut-off events. For 550/644 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 6506 event pairs, 101 based on Foata normal form. 7/479 useless extension candidates. Maximal degree in co-relation 3033. Up to 757 conditions per place. [2021-04-29 00:49:38,121 INFO L146 LiptonReduction]: Number of co-enabled transitions 700 [2021-04-29 00:49:38,138 INFO L158 LiptonReduction]: Checked pairs total: 104 [2021-04-29 00:49:38,139 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:49:38,139 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 139 [2021-04-29 00:49:38,141 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 247 flow [2021-04-29 00:49:38,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 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) [2021-04-29 00:49:38,142 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:49:38,142 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:49:38,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 00:49:38,142 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:49:38,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:49:38,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1308738810, now seen corresponding path program 1 times [2021-04-29 00:49:38,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:49:38,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855134790] [2021-04-29 00:49:38,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:49:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:49:38,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:38,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:38,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:38,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:38,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:38,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:38,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:38,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 00:49:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:49:38,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855134790] [2021-04-29 00:49:38,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:49:38,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 00:49:38,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168004906] [2021-04-29 00:49:38,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 00:49:38,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:49:38,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 00:49:38,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 00:49:38,262 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 171 [2021-04-29 00:49:38,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 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) [2021-04-29 00:49:38,263 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:49:38,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 171 [2021-04-29 00:49:38,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:49:38,516 INFO L129 PetriNetUnfolder]: 312/742 cut-off events. [2021-04-29 00:49:38,517 INFO L130 PetriNetUnfolder]: For 586/913 co-relation queries the response was YES. [2021-04-29 00:49:38,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 742 events. 312/742 cut-off events. For 586/913 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 5689 event pairs, 2 based on Foata normal form. 115/470 useless extension candidates. Maximal degree in co-relation 3039. Up to 649 conditions per place. [2021-04-29 00:49:38,528 INFO L132 encePairwiseOnDemand]: 159/171 looper letters, 2 selfloop transitions, 29 changer transitions 10/61 dead transitions. [2021-04-29 00:49:38,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 61 transitions, 405 flow [2021-04-29 00:49:38,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-29 00:49:38,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-29 00:49:38,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 819 transitions. [2021-04-29 00:49:38,533 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2021-04-29 00:49:38,533 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 819 transitions. [2021-04-29 00:49:38,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 819 transitions. [2021-04-29 00:49:38,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:49:38,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 819 transitions. [2021-04-29 00:49:38,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 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) [2021-04-29 00:49:38,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 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) [2021-04-29 00:49:38,545 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 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) [2021-04-29 00:49:38,545 INFO L185 Difference]: Start difference. First operand has 47 places, 51 transitions, 247 flow. Second operand 7 states and 819 transitions. [2021-04-29 00:49:38,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 61 transitions, 405 flow [2021-04-29 00:49:38,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 368 flow, removed 18 selfloop flow, removed 1 redundant places. [2021-04-29 00:49:38,571 INFO L241 Difference]: Finished difference. Result has 55 places, 51 transitions, 316 flow [2021-04-29 00:49:38,572 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=316, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2021-04-29 00:49:38,572 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -25 predicate places. [2021-04-29 00:49:38,573 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:49:38,573 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 51 transitions, 316 flow [2021-04-29 00:49:38,574 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 51 transitions, 316 flow [2021-04-29 00:49:38,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 51 transitions, 316 flow [2021-04-29 00:49:38,687 INFO L129 PetriNetUnfolder]: 204/579 cut-off events. [2021-04-29 00:49:38,688 INFO L130 PetriNetUnfolder]: For 697/987 co-relation queries the response was YES. [2021-04-29 00:49:38,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2361 conditions, 579 events. 204/579 cut-off events. For 697/987 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 4338 event pairs, 2 based on Foata normal form. 1/289 useless extension candidates. Maximal degree in co-relation 2345. Up to 487 conditions per place. [2021-04-29 00:49:38,710 INFO L146 LiptonReduction]: Number of co-enabled transitions 634 [2021-04-29 00:49:38,720 INFO L158 LiptonReduction]: Checked pairs total: 98 [2021-04-29 00:49:38,720 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:49:38,721 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 148 [2021-04-29 00:49:38,729 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 316 flow [2021-04-29 00:49:38,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 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) [2021-04-29 00:49:38,731 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:49:38,731 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:49:38,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 00:49:38,732 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:49:38,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:49:38,734 INFO L82 PathProgramCache]: Analyzing trace with hash 2020727439, now seen corresponding path program 1 times [2021-04-29 00:49:38,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:49:38,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913930372] [2021-04-29 00:49:38,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:49:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:49:38,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:38,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:49:38,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:38,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:38,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:38,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:38,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:49:38,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913930372] [2021-04-29 00:49:38,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:49:38,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:49:38,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818233906] [2021-04-29 00:49:38,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:49:38,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:49:38,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:49:38,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:49:38,861 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 171 [2021-04-29 00:49:38,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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) [2021-04-29 00:49:38,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:49:38,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 171 [2021-04-29 00:49:38,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:49:39,034 INFO L129 PetriNetUnfolder]: 377/1012 cut-off events. [2021-04-29 00:49:39,034 INFO L130 PetriNetUnfolder]: For 1424/1744 co-relation queries the response was YES. [2021-04-29 00:49:39,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4216 conditions, 1012 events. 377/1012 cut-off events. For 1424/1744 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 8738 event pairs, 2 based on Foata normal form. 28/534 useless extension candidates. Maximal degree in co-relation 4198. Up to 892 conditions per place. [2021-04-29 00:49:39,043 INFO L132 encePairwiseOnDemand]: 168/171 looper letters, 4 selfloop transitions, 1 changer transitions 3/53 dead transitions. [2021-04-29 00:49:39,043 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 340 flow [2021-04-29 00:49:39,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:49:39,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:49:39,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 494 transitions. [2021-04-29 00:49:39,046 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2021-04-29 00:49:39,046 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 494 transitions. [2021-04-29 00:49:39,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 494 transitions. [2021-04-29 00:49:39,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:49:39,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 494 transitions. [2021-04-29 00:49:39,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 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) [2021-04-29 00:49:39,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 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) [2021-04-29 00:49:39,052 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 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) [2021-04-29 00:49:39,053 INFO L185 Difference]: Start difference. First operand has 53 places, 51 transitions, 316 flow. Second operand 4 states and 494 transitions. [2021-04-29 00:49:39,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 340 flow [2021-04-29 00:49:39,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 258 flow, removed 22 selfloop flow, removed 5 redundant places. [2021-04-29 00:49:39,082 INFO L241 Difference]: Finished difference. Result has 53 places, 50 transitions, 241 flow [2021-04-29 00:49:39,082 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2021-04-29 00:49:39,083 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -27 predicate places. [2021-04-29 00:49:39,083 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:49:39,083 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 50 transitions, 241 flow [2021-04-29 00:49:39,083 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 50 transitions, 241 flow [2021-04-29 00:49:39,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 50 transitions, 241 flow [2021-04-29 00:49:39,148 INFO L129 PetriNetUnfolder]: 200/576 cut-off events. [2021-04-29 00:49:39,148 INFO L130 PetriNetUnfolder]: For 421/441 co-relation queries the response was YES. [2021-04-29 00:49:39,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1632 conditions, 576 events. 200/576 cut-off events. For 421/441 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 4466 event pairs, 0 based on Foata normal form. 1/286 useless extension candidates. Maximal degree in co-relation 1617. Up to 307 conditions per place. [2021-04-29 00:49:39,159 INFO L146 LiptonReduction]: Number of co-enabled transitions 542 [2021-04-29 00:49:39,231 INFO L158 LiptonReduction]: Checked pairs total: 144 [2021-04-29 00:49:39,231 INFO L160 LiptonReduction]: Total number of compositions: 2 [2021-04-29 00:49:39,231 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 148 [2021-04-29 00:49:39,234 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 247 flow [2021-04-29 00:49:39,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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) [2021-04-29 00:49:39,235 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:49:39,235 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:49:39,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 00:49:39,235 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:49:39,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:49:39,236 INFO L82 PathProgramCache]: Analyzing trace with hash 789895675, now seen corresponding path program 1 times [2021-04-29 00:49:39,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:49:39,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222219519] [2021-04-29 00:49:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:49:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:49:39,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:39,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:49:39,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:39,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:39,348 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:49:39,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:49:39,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:49:39,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222219519] [2021-04-29 00:49:39,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:49:39,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:49:39,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470527286] [2021-04-29 00:49:39,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:49:39,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:49:39,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:49:39,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:49:39,363 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 173 [2021-04-29 00:49:39,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 247 flow. Second operand has 4 states, 4 states have (on average 112.5) internal successors, (450), 4 states have internal predecessors, (450), 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) [2021-04-29 00:49:39,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:49:39,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 173 [2021-04-29 00:49:39,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:49:39,465 INFO L129 PetriNetUnfolder]: 222/627 cut-off events. [2021-04-29 00:49:39,465 INFO L130 PetriNetUnfolder]: For 585/606 co-relation queries the response was YES. [2021-04-29 00:49:39,468 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1781 conditions, 627 events. 222/627 cut-off events. For 585/606 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 4921 event pairs, 0 based on Foata normal form. 29/334 useless extension candidates. Maximal degree in co-relation 1770. Up to 325 conditions per place. [2021-04-29 00:49:39,470 INFO L132 encePairwiseOnDemand]: 168/173 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2021-04-29 00:49:39,470 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 286 flow [2021-04-29 00:49:39,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:49:39,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:49:39,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 454 transitions. [2021-04-29 00:49:39,472 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6560693641618497 [2021-04-29 00:49:39,473 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 454 transitions. [2021-04-29 00:49:39,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 454 transitions. [2021-04-29 00:49:39,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:49:39,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 454 transitions. [2021-04-29 00:49:39,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 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) [2021-04-29 00:49:39,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 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) [2021-04-29 00:49:39,477 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 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) [2021-04-29 00:49:39,477 INFO L185 Difference]: Start difference. First operand has 51 places, 50 transitions, 247 flow. Second operand 4 states and 454 transitions. [2021-04-29 00:49:39,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 286 flow [2021-04-29 00:49:39,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 00:49:39,487 INFO L241 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2021-04-29 00:49:39,488 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2021-04-29 00:49:39,488 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -29 predicate places. [2021-04-29 00:49:39,488 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:49:39,488 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 0 transitions, 0 flow [2021-04-29 00:49:39,489 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 0 transitions, 0 flow [2021-04-29 00:49:39,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 00:49:39,489 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 00:49:39,489 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:49:39,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-29 00:49:39,490 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 00:49:39,490 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:49:39,490 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:49:39,491 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-04-29 00:49:39,501 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 00:49:39,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 112.5) internal successors, (450), 4 states have internal predecessors, (450), 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) [2021-04-29 00:49:39,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-29 00:49:39,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 12:49:39 BasicIcfg [2021-04-29 00:49:39,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 00:49:39,508 INFO L168 Benchmark]: Toolchain (without parser) took 15636.65 ms. Allocated memory was 316.7 MB in the beginning and 557.8 MB in the end (delta: 241.2 MB). Free memory was 290.6 MB in the beginning and 353.2 MB in the end (delta: -62.6 MB). Peak memory consumption was 180.9 MB. Max. memory is 16.0 GB. [2021-04-29 00:49:39,509 INFO L168 Benchmark]: CDTParser took 0.81 ms. Allocated memory is still 316.7 MB. Free memory is still 300.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 00:49:39,510 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.60 ms. Allocated memory is still 316.7 MB. Free memory was 287.4 MB in the beginning and 287.3 MB in the end (delta: 157.1 kB). Peak memory consumption was 27.0 MB. Max. memory is 16.0 GB. [2021-04-29 00:49:39,513 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.13 ms. Allocated memory is still 316.7 MB. Free memory was 287.3 MB in the beginning and 285.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:49:39,513 INFO L168 Benchmark]: Boogie Preprocessor took 52.37 ms. Allocated memory is still 316.7 MB. Free memory was 285.2 MB in the beginning and 284.4 MB in the end (delta: 827.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 00:49:39,514 INFO L168 Benchmark]: RCFGBuilder took 728.10 ms. Allocated memory is still 316.7 MB. Free memory was 283.9 MB in the beginning and 261.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:49:39,515 INFO L168 Benchmark]: TraceAbstraction took 14036.53 ms. Allocated memory was 316.7 MB in the beginning and 557.8 MB in the end (delta: 241.2 MB). Free memory was 261.4 MB in the beginning and 353.2 MB in the end (delta: -91.8 MB). Peak memory consumption was 149.8 MB. Max. memory is 16.0 GB. [2021-04-29 00:49:39,517 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81 ms. Allocated memory is still 316.7 MB. Free memory is still 300.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 679.60 ms. Allocated memory is still 316.7 MB. Free memory was 287.4 MB in the beginning and 287.3 MB in the end (delta: 157.1 kB). Peak memory consumption was 27.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 90.13 ms. Allocated memory is still 316.7 MB. Free memory was 287.3 MB in the beginning and 285.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 52.37 ms. Allocated memory is still 316.7 MB. Free memory was 285.2 MB in the beginning and 284.4 MB in the end (delta: 827.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 728.10 ms. Allocated memory is still 316.7 MB. Free memory was 283.9 MB in the beginning and 261.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 14036.53 ms. Allocated memory was 316.7 MB in the beginning and 557.8 MB in the end (delta: 241.2 MB). Free memory was 261.4 MB in the beginning and 353.2 MB in the end (delta: -91.8 MB). Peak memory consumption was 149.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10016.8ms, 70 PlacesBefore, 80 PlacesAfterwards, 61 TransitionsBefore, 70 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 6 FixpointIterations, 48 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 95 TotalNumberOfCompositions, 5722 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2071, positive: 1905, positive conditional: 1905, positive unconditional: 0, negative: 166, negative conditional: 166, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 951, positive: 899, positive conditional: 0, positive unconditional: 899, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 951, positive: 899, positive conditional: 0, positive unconditional: 899, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 951, positive: 887, positive conditional: 0, positive unconditional: 887, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 64, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 296, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 240, negative conditional: 0, negative unconditional: 240, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2071, positive: 1006, positive conditional: 1006, positive unconditional: 0, negative: 114, negative conditional: 114, negative unconditional: 0, unknown: 951, unknown conditional: 951, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 941, Positive cache size: 889, Positive conditional cache size: 889, Positive unconditional cache size: 0, Negative cache size: 52, Negative conditional cache size: 52, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 112.5ms, 84 PlacesBefore, 42 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 582 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 608 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 257, positive: 233, positive conditional: 233, positive unconditional: 0, negative: 24, negative conditional: 24, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 55, positive: 50, positive conditional: 19, positive unconditional: 31, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 55, positive: 50, positive conditional: 19, positive unconditional: 31, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 55, positive: 50, positive conditional: 0, positive unconditional: 50, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 24, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 257, positive: 183, positive conditional: 183, positive unconditional: 0, negative: 19, negative conditional: 19, negative unconditional: 0, unknown: 55, unknown conditional: 55, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 996, Positive cache size: 939, Positive conditional cache size: 939, Positive unconditional cache size: 0, Negative cache size: 57, Negative conditional cache size: 57, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 107.0ms, 48 PlacesBefore, 46 PlacesAfterwards, 48 TransitionsBefore, 48 TransitionsAfterwards, 618 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 836 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 143, positive: 110, positive conditional: 110, positive unconditional: 0, negative: 33, negative conditional: 33, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 32, positive: 26, positive conditional: 15, positive unconditional: 11, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 32, positive: 26, positive conditional: 15, positive unconditional: 11, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 32, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 33, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 143, positive: 84, positive conditional: 84, positive unconditional: 0, negative: 27, negative conditional: 27, negative unconditional: 0, unknown: 32, unknown conditional: 32, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1028, Positive cache size: 965, Positive conditional cache size: 965, Positive unconditional cache size: 0, Negative cache size: 63, Negative conditional cache size: 63, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 138.3ms, 47 PlacesBefore, 47 PlacesAfterwards, 51 TransitionsBefore, 51 TransitionsAfterwards, 700 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 104 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 36, positive: 32, positive conditional: 32, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11, positive: 9, positive conditional: 4, positive unconditional: 5, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 11, positive: 9, positive conditional: 4, positive unconditional: 5, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 11, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 7, negative conditional: 4, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 36, positive: 23, positive conditional: 23, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 11, unknown conditional: 11, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1039, Positive cache size: 974, Positive conditional cache size: 974, Positive unconditional cache size: 0, Negative cache size: 65, Negative conditional cache size: 65, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 146.9ms, 55 PlacesBefore, 53 PlacesAfterwards, 51 TransitionsBefore, 51 TransitionsAfterwards, 634 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 98 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 34, positive: 30, positive conditional: 30, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 34, positive: 22, positive conditional: 22, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 8, unknown conditional: 8, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1047, Positive cache size: 982, Positive conditional cache size: 982, Positive unconditional cache size: 0, Negative cache size: 65, Negative conditional cache size: 65, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 147.6ms, 53 PlacesBefore, 51 PlacesAfterwards, 50 TransitionsBefore, 50 TransitionsAfterwards, 542 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 144 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 86, positive: 82, positive conditional: 82, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 25, positive: 24, positive conditional: 18, positive unconditional: 6, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 25, positive: 24, positive conditional: 18, positive unconditional: 6, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 25, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 86, positive: 58, positive conditional: 58, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 25, unknown conditional: 25, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1072, Positive cache size: 1006, Positive conditional cache size: 1006, Positive unconditional cache size: 0, Negative cache size: 66, Negative conditional cache size: 66, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4ms, 51 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1072, Positive cache size: 1006, Positive conditional cache size: 1006, Positive unconditional cache size: 0, Negative cache size: 66, Negative conditional cache size: 66, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: 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 CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 11.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 13832.8ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1968.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10192.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 58 SDtfs, 33 SDslu, 43 SDs, 0 SdLazy, 270 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 278.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 118.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=316occurred in iteration=4, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.5ms SsaConstructionTime, 198.3ms SatisfiabilityAnalysisTime, 510.8ms InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 295 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! Received shutdown request...