/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:18:56,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:18:56,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:18:56,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:18:56,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:18:56,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:18:56,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:18:56,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:18:56,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:18:56,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:18:56,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:18:56,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:18:56,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:18:56,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:18:56,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:18:56,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:18:56,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:18:56,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:18:56,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:18:56,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:18:56,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:18:56,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:18:56,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:18:56,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:18:56,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:18:56,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 20:18:56,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 20:18:56,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 20:18:56,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 20:18:56,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 20:18:56,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 20:18:56,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 20:18:56,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 20:18:56,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:18:56,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:18:56,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:18:56,328 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-SemanticLbe.epf [2021-03-11 20:18:56,354 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:18:56,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:18:56,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:18:56,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:18:56,356 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:18:56,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:18:56,357 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:18:56,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:18:56,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:18:56,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:18:56,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:18:56,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:18:56,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:18:56,358 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:18:56,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:18:56,358 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:18:56,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:18:56,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:18:56,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:18:56,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:18:56,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:18:56,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:18:56,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:18:56,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:18:56,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:18:56,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:18:56,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:18:56,359 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:18:56,359 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:18:56,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:18:56,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:18:56,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:18:56,616 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:18:56,617 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:18:56,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.oepc.i [2021-03-11 20:18:56,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4594a9836/fb1df9caf6e74e74908ea0204ddfea7d/FLAG055f36898 [2021-03-11 20:18:57,027 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:18:57,028 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_tso.oepc.i [2021-03-11 20:18:57,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4594a9836/fb1df9caf6e74e74908ea0204ddfea7d/FLAG055f36898 [2021-03-11 20:18:57,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4594a9836/fb1df9caf6e74e74908ea0204ddfea7d [2021-03-11 20:18:57,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:18:57,386 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:18:57,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:18:57,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:18:57,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:18:57,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:18:57" (1/1) ... [2021-03-11 20:18:57,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a387f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:18:57, skipping insertion in model container [2021-03-11 20:18:57,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:18:57" (1/1) ... [2021-03-11 20:18:57,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:18:57,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:18:57,518 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/safe000_tso.oepc.i[950,963] [2021-03-11 20:18:57,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:18:57,657 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:18:57,665 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/safe000_tso.oepc.i[950,963] [2021-03-11 20:18:57,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:18:57,738 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:18:57,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:18:57 WrapperNode [2021-03-11 20:18:57,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:18:57,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:18:57,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:18:57,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:18:57,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:18:57" (1/1) ... [2021-03-11 20:18:57,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:18:57" (1/1) ... [2021-03-11 20:18:57,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:18:57,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:18:57,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:18:57,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:18:57,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:18:57" (1/1) ... [2021-03-11 20:18:57,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:18:57" (1/1) ... [2021-03-11 20:18:57,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:18:57" (1/1) ... [2021-03-11 20:18:57,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:18:57" (1/1) ... [2021-03-11 20:18:57,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:18:57" (1/1) ... [2021-03-11 20:18:57,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:18:57" (1/1) ... [2021-03-11 20:18:57,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:18:57" (1/1) ... [2021-03-11 20:18:57,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:18:57,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:18:57,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:18:57,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:18:57,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:18:57" (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 [2021-03-11 20:18:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:18:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:18:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:18:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:18:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:18:57,842 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:18:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:18:57,842 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:18:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:18:57,842 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:18:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:18:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:18:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:18:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:18:57,844 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:18:58,117 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:18:58,117 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:18:58,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:18:58 BoogieIcfgContainer [2021-03-11 20:18:58,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:18:58,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:18:58,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:18:58,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:18:58,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:18:57" (1/3) ... [2021-03-11 20:18:58,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d12ad06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:18:58, skipping insertion in model container [2021-03-11 20:18:58,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:18:57" (2/3) ... [2021-03-11 20:18:58,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d12ad06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:18:58, skipping insertion in model container [2021-03-11 20:18:58,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:18:58" (3/3) ... [2021-03-11 20:18:58,125 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_tso.oepc.i [2021-03-11 20:18:58,129 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:18:58,132 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:18:58,132 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:18:58,160 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,160 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,160 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,160 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,160 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,160 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,161 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,161 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,161 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,161 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,161 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,161 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,162 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,162 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,162 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,162 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,162 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,162 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,163 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,163 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,163 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,163 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,163 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,163 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,164 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,164 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,165 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,165 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,165 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,165 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,166 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,166 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,166 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,166 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,166 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,166 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,168 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,169 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,169 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,169 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,172 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,173 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,173 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,173 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,177 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,177 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,177 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,178 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:18:58,179 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:18:58,192 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 20:18:58,214 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:18:58,215 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:18:58,215 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:18:58,215 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:18:58,215 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:18:58,215 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:18:58,215 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:18:58,215 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:18:58,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 20:18:58,261 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-11 20:18:58,261 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:18:58,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 20:18:58,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 20:18:58,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-11 20:18:58,275 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:18:58,281 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-11 20:18:58,282 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-11 20:18:58,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-11 20:18:58,295 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-11 20:18:58,295 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:18:58,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-11 20:18:58,297 INFO L116 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-11 20:18:59,876 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-11 20:19:00,076 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-11 20:19:00,143 INFO L131 LiptonReduction]: Checked pairs total: 1856 [2021-03-11 20:19:00,143 INFO L133 LiptonReduction]: Total number of compositions: 47 [2021-03-11 20:19:00,144 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1872 [2021-03-11 20:19:00,161 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-11 20:19:00,161 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:19:00,162 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:00,162 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:00,162 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:00,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:00,167 INFO L82 PathProgramCache]: Analyzing trace with hash -373270630, now seen corresponding path program 1 times [2021-03-11 20:19:00,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:00,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053315716] [2021-03-11 20:19:00,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:00,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:00,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:19:00,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053315716] [2021-03-11 20:19:00,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:00,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:19:00,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028887808] [2021-03-11 20:19:00,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:19:00,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:00,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:19:00,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:19:00,363 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 122 [2021-03-11 20:19:00,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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) [2021-03-11 20:19:00,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:00,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 122 [2021-03-11 20:19:00,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:00,385 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-11 20:19:00,388 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:19:00,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 3/20 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-11 20:19:00,389 INFO L132 encePairwiseOnDemand]: 118/122 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2021-03-11 20:19:00,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2021-03-11 20:19:00,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:19:00,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:19:00,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2021-03-11 20:19:00,401 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8524590163934426 [2021-03-11 20:19:00,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2021-03-11 20:19:00,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2021-03-11 20:19:00,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:00,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2021-03-11 20:19:00,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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) [2021-03-11 20:19:00,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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) [2021-03-11 20:19:00,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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) [2021-03-11 20:19:00,415 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 312 transitions. [2021-03-11 20:19:00,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2021-03-11 20:19:00,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 20:19:00,417 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2021-03-11 20:19:00,418 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2021-03-11 20:19:00,419 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2021-03-11 20:19:00,419 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2021-03-11 20:19:00,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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) [2021-03-11 20:19:00,419 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:00,419 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:00,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:19:00,420 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:00,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:00,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1297014444, now seen corresponding path program 1 times [2021-03-11 20:19:00,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:00,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617331572] [2021-03-11 20:19:00,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:00,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:00,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:00,490 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:19:00,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:19:00,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:19:00,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617331572] [2021-03-11 20:19:00,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:00,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:19:00,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485519684] [2021-03-11 20:19:00,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:19:00,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:00,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:19:00,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:19:00,498 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 122 [2021-03-11 20:19:00,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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) [2021-03-11 20:19:00,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:00,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 122 [2021-03-11 20:19:00,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:00,552 INFO L129 PetriNetUnfolder]: 67/172 cut-off events. [2021-03-11 20:19:00,553 INFO L130 PetriNetUnfolder]: For 40/54 co-relation queries the response was YES. [2021-03-11 20:19:00,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 172 events. 67/172 cut-off events. For 40/54 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 798 event pairs, 7 based on Foata normal form. 15/182 useless extension candidates. Maximal degree in co-relation 342. Up to 36 conditions per place. [2021-03-11 20:19:00,554 INFO L132 encePairwiseOnDemand]: 114/122 looper letters, 11 selfloop transitions, 12 changer transitions 0/32 dead transitions. [2021-03-11 20:19:00,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 32 transitions, 135 flow [2021-03-11 20:19:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:19:00,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:19:00,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2021-03-11 20:19:00,561 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7377049180327869 [2021-03-11 20:19:00,561 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2021-03-11 20:19:00,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2021-03-11 20:19:00,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:00,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2021-03-11 20:19:00,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 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) [2021-03-11 20:19:00,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2021-03-11 20:19:00,566 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2021-03-11 20:19:00,566 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 5 states and 450 transitions. [2021-03-11 20:19:00,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 32 transitions, 135 flow [2021-03-11 20:19:00,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 32 transitions, 125 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:19:00,567 INFO L241 Difference]: Finished difference. Result has 33 places, 27 transitions, 136 flow [2021-03-11 20:19:00,567 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2021-03-11 20:19:00,568 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2021-03-11 20:19:00,568 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 136 flow [2021-03-11 20:19:00,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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) [2021-03-11 20:19:00,568 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:00,568 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:00,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:19:00,568 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:00,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:00,568 INFO L82 PathProgramCache]: Analyzing trace with hash 2064156764, now seen corresponding path program 1 times [2021-03-11 20:19:00,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:00,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974247956] [2021-03-11 20:19:00,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:00,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:00,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:00,645 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:19:00,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:19:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:19:00,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974247956] [2021-03-11 20:19:00,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:00,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:19:00,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740122393] [2021-03-11 20:19:00,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:19:00,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:00,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:19:00,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:19:00,653 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 122 [2021-03-11 20:19:00,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2021-03-11 20:19:00,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:00,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 122 [2021-03-11 20:19:00,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:00,682 INFO L129 PetriNetUnfolder]: 41/131 cut-off events. [2021-03-11 20:19:00,682 INFO L130 PetriNetUnfolder]: For 137/230 co-relation queries the response was YES. [2021-03-11 20:19:00,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 131 events. 41/131 cut-off events. For 137/230 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 567 event pairs, 4 based on Foata normal form. 8/136 useless extension candidates. Maximal degree in co-relation 413. Up to 43 conditions per place. [2021-03-11 20:19:00,684 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 14 selfloop transitions, 15 changer transitions 0/40 dead transitions. [2021-03-11 20:19:00,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 274 flow [2021-03-11 20:19:00,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:19:00,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:19:00,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 368 transitions. [2021-03-11 20:19:00,692 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7540983606557377 [2021-03-11 20:19:00,692 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 368 transitions. [2021-03-11 20:19:00,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 368 transitions. [2021-03-11 20:19:00,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:00,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 368 transitions. [2021-03-11 20:19:00,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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) [2021-03-11 20:19:00,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2021-03-11 20:19:00,695 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2021-03-11 20:19:00,695 INFO L185 Difference]: Start difference. First operand has 33 places, 27 transitions, 136 flow. Second operand 4 states and 368 transitions. [2021-03-11 20:19:00,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 274 flow [2021-03-11 20:19:00,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:19:00,699 INFO L241 Difference]: Finished difference. Result has 39 places, 36 transitions, 260 flow [2021-03-11 20:19:00,701 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=260, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2021-03-11 20:19:00,701 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2021-03-11 20:19:00,701 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 260 flow [2021-03-11 20:19:00,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2021-03-11 20:19:00,701 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:00,701 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:00,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:19:00,703 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:00,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:00,703 INFO L82 PathProgramCache]: Analyzing trace with hash -555548278, now seen corresponding path program 1 times [2021-03-11 20:19:00,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:00,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540873187] [2021-03-11 20:19:00,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:00,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:00,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:00,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:00,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:00,735 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:19:00,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:19:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:19:00,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540873187] [2021-03-11 20:19:00,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:00,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:19:00,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953567585] [2021-03-11 20:19:00,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:19:00,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:00,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:19:00,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:19:00,744 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 122 [2021-03-11 20:19:00,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 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) [2021-03-11 20:19:00,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:00,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 122 [2021-03-11 20:19:00,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:00,770 INFO L129 PetriNetUnfolder]: 41/132 cut-off events. [2021-03-11 20:19:00,770 INFO L130 PetriNetUnfolder]: For 355/460 co-relation queries the response was YES. [2021-03-11 20:19:00,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 132 events. 41/132 cut-off events. For 355/460 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 602 event pairs, 4 based on Foata normal form. 15/143 useless extension candidates. Maximal degree in co-relation 524. Up to 46 conditions per place. [2021-03-11 20:19:00,771 INFO L132 encePairwiseOnDemand]: 115/122 looper letters, 13 selfloop transitions, 10 changer transitions 18/50 dead transitions. [2021-03-11 20:19:00,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 50 transitions, 467 flow [2021-03-11 20:19:00,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:19:00,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:19:00,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 445 transitions. [2021-03-11 20:19:00,772 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7295081967213115 [2021-03-11 20:19:00,773 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 445 transitions. [2021-03-11 20:19:00,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 445 transitions. [2021-03-11 20:19:00,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:00,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 445 transitions. [2021-03-11 20:19:00,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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) [2021-03-11 20:19:00,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2021-03-11 20:19:00,775 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2021-03-11 20:19:00,775 INFO L185 Difference]: Start difference. First operand has 39 places, 36 transitions, 260 flow. Second operand 5 states and 445 transitions. [2021-03-11 20:19:00,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 50 transitions, 467 flow [2021-03-11 20:19:00,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 467 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:19:00,778 INFO L241 Difference]: Finished difference. Result has 47 places, 29 transitions, 241 flow [2021-03-11 20:19:00,778 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=241, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2021-03-11 20:19:00,778 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2021-03-11 20:19:00,778 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 241 flow [2021-03-11 20:19:00,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 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) [2021-03-11 20:19:00,779 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:00,779 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:00,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:19:00,779 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:00,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:00,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1934521776, now seen corresponding path program 1 times [2021-03-11 20:19:00,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:00,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792004263] [2021-03-11 20:19:00,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:00,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:00,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:00,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:00,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:19:00,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792004263] [2021-03-11 20:19:00,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:00,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:19:00,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714880022] [2021-03-11 20:19:00,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:19:00,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:00,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:19:00,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:19:00,807 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 122 [2021-03-11 20:19:00,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 29 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 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) [2021-03-11 20:19:00,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:00,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 122 [2021-03-11 20:19:00,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:00,824 INFO L129 PetriNetUnfolder]: 8/46 cut-off events. [2021-03-11 20:19:00,824 INFO L130 PetriNetUnfolder]: For 180/185 co-relation queries the response was YES. [2021-03-11 20:19:00,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 46 events. 8/46 cut-off events. For 180/185 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 135 event pairs, 1 based on Foata normal form. 2/48 useless extension candidates. Maximal degree in co-relation 196. Up to 13 conditions per place. [2021-03-11 20:19:00,825 INFO L132 encePairwiseOnDemand]: 117/122 looper letters, 3 selfloop transitions, 3 changer transitions 14/31 dead transitions. [2021-03-11 20:19:00,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 31 transitions, 297 flow [2021-03-11 20:19:00,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:19:00,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:19:00,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2021-03-11 20:19:00,827 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7950819672131147 [2021-03-11 20:19:00,827 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 388 transitions. [2021-03-11 20:19:00,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 388 transitions. [2021-03-11 20:19:00,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:00,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 388 transitions. [2021-03-11 20:19:00,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2021-03-11 20:19:00,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2021-03-11 20:19:00,829 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2021-03-11 20:19:00,829 INFO L185 Difference]: Start difference. First operand has 47 places, 29 transitions, 241 flow. Second operand 4 states and 388 transitions. [2021-03-11 20:19:00,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 31 transitions, 297 flow [2021-03-11 20:19:00,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 31 transitions, 258 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-11 20:19:00,831 INFO L241 Difference]: Finished difference. Result has 46 places, 17 transitions, 108 flow [2021-03-11 20:19:00,831 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=17} [2021-03-11 20:19:00,832 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2021-03-11 20:19:00,832 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 17 transitions, 108 flow [2021-03-11 20:19:00,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 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) [2021-03-11 20:19:00,832 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:00,832 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:00,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:19:00,832 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:00,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:00,832 INFO L82 PathProgramCache]: Analyzing trace with hash 582090360, now seen corresponding path program 1 times [2021-03-11 20:19:00,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:00,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131974978] [2021-03-11 20:19:00,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:00,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:00,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:00,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:00,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:00,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:19:00,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131974978] [2021-03-11 20:19:00,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:00,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:19:00,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705101036] [2021-03-11 20:19:00,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:19:00,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:00,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:19:00,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:19:00,868 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 122 [2021-03-11 20:19:00,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 17 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2021-03-11 20:19:00,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:00,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 122 [2021-03-11 20:19:00,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:00,877 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-11 20:19:00,877 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2021-03-11 20:19:00,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 16 events. 0/16 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-11 20:19:00,878 INFO L132 encePairwiseOnDemand]: 119/122 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2021-03-11 20:19:00,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 16 transitions, 106 flow [2021-03-11 20:19:00,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:19:00,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:19:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 382 transitions. [2021-03-11 20:19:00,879 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7827868852459017 [2021-03-11 20:19:00,879 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 382 transitions. [2021-03-11 20:19:00,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 382 transitions. [2021-03-11 20:19:00,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:00,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 382 transitions. [2021-03-11 20:19:00,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2021-03-11 20:19:00,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2021-03-11 20:19:00,880 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2021-03-11 20:19:00,881 INFO L185 Difference]: Start difference. First operand has 46 places, 17 transitions, 108 flow. Second operand 4 states and 382 transitions. [2021-03-11 20:19:00,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 16 transitions, 106 flow [2021-03-11 20:19:00,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 52 flow, removed 3 selfloop flow, removed 20 redundant places. [2021-03-11 20:19:00,881 INFO L241 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2021-03-11 20:19:00,881 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2021-03-11 20:19:00,881 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2021-03-11 20:19:00,881 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2021-03-11 20:19:00,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2021-03-11 20:19:00,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:19:00,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:19:00 BasicIcfg [2021-03-11 20:19:00,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:19:00,885 INFO L168 Benchmark]: Toolchain (without parser) took 3501.39 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 328.1 MB in the beginning and 254.0 MB in the end (delta: 74.1 MB). Peak memory consumption was 147.2 MB. Max. memory is 16.0 GB. [2021-03-11 20:19:00,885 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 364.9 MB. Free memory was 345.9 MB in the beginning and 345.9 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:19:00,886 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.17 ms. Allocated memory is still 364.9 MB. Free memory was 327.5 MB in the beginning and 327.6 MB in the end (delta: -153.8 kB). Peak memory consumption was 4.8 MB. Max. memory is 16.0 GB. [2021-03-11 20:19:00,886 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.96 ms. Allocated memory is still 364.9 MB. Free memory was 327.6 MB in the beginning and 325.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:19:00,886 INFO L168 Benchmark]: Boogie Preprocessor took 12.76 ms. Allocated memory is still 364.9 MB. Free memory was 325.5 MB in the beginning and 324.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:19:00,887 INFO L168 Benchmark]: RCFGBuilder took 322.61 ms. Allocated memory is still 364.9 MB. Free memory was 324.5 MB in the beginning and 300.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-11 20:19:00,887 INFO L168 Benchmark]: TraceAbstraction took 2762.85 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 300.4 MB in the beginning and 254.0 MB in the end (delta: 46.4 MB). Peak memory consumption was 120.8 MB. Max. memory is 16.0 GB. [2021-03-11 20:19:00,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 364.9 MB. Free memory was 345.9 MB in the beginning and 345.9 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 349.17 ms. Allocated memory is still 364.9 MB. Free memory was 327.5 MB in the beginning and 327.6 MB in the end (delta: -153.8 kB). Peak memory consumption was 4.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 41.96 ms. Allocated memory is still 364.9 MB. Free memory was 327.6 MB in the beginning and 325.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.76 ms. Allocated memory is still 364.9 MB. Free memory was 325.5 MB in the beginning and 324.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 322.61 ms. Allocated memory is still 364.9 MB. Free memory was 324.5 MB in the beginning and 300.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2762.85 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 300.4 MB in the beginning and 254.0 MB in the end (delta: 46.4 MB). Peak memory consumption was 120.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1860.4ms, 69 PlacesBefore, 27 PlacesAfterwards, 60 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 47 TotalNumberOfCompositions, 1856 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 938, positive: 853, positive conditional: 0, positive unconditional: 853, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 630, positive: 590, positive conditional: 0, positive unconditional: 590, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 630, positive: 583, positive conditional: 0, positive unconditional: 583, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 47, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 150, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 120, negative conditional: 0, negative unconditional: 120, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 938, positive: 263, positive conditional: 0, positive unconditional: 263, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 630, unknown conditional: 0, unknown unconditional: 630] , Statistics on independence cache: Total cache size (in pairs): 74, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2671.0ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 253.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1938.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 27 SDslu, 18 SDs, 0 SdLazy, 50 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 40.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=260occurred in iteration=3, InterpolantAutomatonStates: 25, 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: 12.3ms SsaConstructionTime, 107.8ms SatisfiabilityAnalysisTime, 230.8ms InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 303 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...