/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:46:26,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:46:26,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:46:26,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:46:26,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:46:26,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:46:26,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:46:26,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:46:26,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:46:26,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:46:26,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:46:26,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:46:26,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:46:26,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:46:26,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:46:26,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:46:26,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:46:26,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:46:26,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:46:26,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:46:26,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:46:26,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:46:26,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:46:26,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:46:26,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:46:26,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:46:26,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:46:26,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:46:26,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:46:26,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:46:26,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:46:26,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:46:26,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:46:26,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:46:26,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:46:26,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:46:26,182 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 [2020-10-16 01:46:26,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:46:26,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:46:26,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:46:26,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:46:26,225 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:46:26,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:46:26,225 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:46:26,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:46:26,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:46:26,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:46:26,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:46:26,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:46:26,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:46:26,228 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:46:26,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:46:26,228 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:46:26,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:46:26,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:46:26,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:46:26,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:46:26,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:46:26,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:46:26,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:46:26,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:46:26,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:46:26,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:46:26,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:46:26,231 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:46:26,231 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:46:26,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:46:26,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:46:26,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:46:26,538 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:46:26,538 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:46:26,539 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2020-10-16 01:46:26,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8357c4477/b833a2964630408ab4450160e6605f6a/FLAGcfeda95e1 [2020-10-16 01:46:27,147 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:46:27,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2020-10-16 01:46:27,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8357c4477/b833a2964630408ab4450160e6605f6a/FLAGcfeda95e1 [2020-10-16 01:46:27,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8357c4477/b833a2964630408ab4450160e6605f6a [2020-10-16 01:46:27,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:46:27,439 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:46:27,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:46:27,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:46:27,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:46:27,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:46:27" (1/1) ... [2020-10-16 01:46:27,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@732d236d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:27, skipping insertion in model container [2020-10-16 01:46:27,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:46:27" (1/1) ... [2020-10-16 01:46:27,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:46:27,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:46:27,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:46:27,979 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:46:28,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:46:28,121 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:46:28,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:28 WrapperNode [2020-10-16 01:46:28,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:46:28,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:46:28,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:46:28,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:46:28,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:28" (1/1) ... [2020-10-16 01:46:28,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:28" (1/1) ... [2020-10-16 01:46:28,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:46:28,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:46:28,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:46:28,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:46:28,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:28" (1/1) ... [2020-10-16 01:46:28,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:28" (1/1) ... [2020-10-16 01:46:28,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:28" (1/1) ... [2020-10-16 01:46:28,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:28" (1/1) ... [2020-10-16 01:46:28,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:28" (1/1) ... [2020-10-16 01:46:28,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:28" (1/1) ... [2020-10-16 01:46:28,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:28" (1/1) ... [2020-10-16 01:46:28,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:46:28,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:46:28,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:46:28,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:46:28,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:28" (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 [2020-10-16 01:46:28,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:46:28,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:46:28,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:46:28,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:46:28,258 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:46:28,258 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:46:28,258 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:46:28,258 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:46:28,259 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:46:28,259 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:46:28,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:46:28,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:46:28,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:46:28,261 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:46:28,608 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:46:28,609 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:46:28,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:46:28 BoogieIcfgContainer [2020-10-16 01:46:28,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:46:28,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:46:28,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:46:28,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:46:28,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:46:27" (1/3) ... [2020-10-16 01:46:28,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac6578a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:46:28, skipping insertion in model container [2020-10-16 01:46:28,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:28" (2/3) ... [2020-10-16 01:46:28,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac6578a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:46:28, skipping insertion in model container [2020-10-16 01:46:28,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:46:28" (3/3) ... [2020-10-16 01:46:28,621 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.oepc.i [2020-10-16 01:46:28,632 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:46:28,640 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:46:28,641 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:46:28,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,677 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,677 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,678 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,683 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,683 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,683 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,684 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,690 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,690 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,690 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,691 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,704 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,704 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,706 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,706 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,713 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,713 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,713 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,713 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:28,736 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:46:28,755 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:46:28,755 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:46:28,755 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:46:28,755 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:46:28,755 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:46:28,756 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:46:28,756 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:46:28,756 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:46:28,770 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:46:28,816 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 01:46:28,816 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:28,822 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 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. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 01:46:28,822 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:46:28,829 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 01:46:28,831 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:46:28,834 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:46:28,837 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:46:28,838 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 01:46:28,857 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 01:46:28,857 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:28,858 INFO L80 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:46:28,860 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:46:30,119 INFO L132 LiptonReduction]: Checked pairs total: 1810 [2020-10-16 01:46:30,120 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-16 01:46:30,123 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1294 [2020-10-16 01:46:30,131 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2020-10-16 01:46:30,131 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:30,131 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:30,132 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:30,133 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:30,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:30,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1532819962, now seen corresponding path program 1 times [2020-10-16 01:46:30,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:30,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685997220] [2020-10-16 01:46:30,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:30,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685997220] [2020-10-16 01:46:30,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:30,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:46:30,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182105189] [2020-10-16 01:46:30,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 01:46:30,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:30,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 01:46:30,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 01:46:30,359 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 113 [2020-10-16 01:46:30,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states. [2020-10-16 01:46:30,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:30,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 113 [2020-10-16 01:46:30,363 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:30,373 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:46:30,374 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:30,374 INFO L80 FinitePrefix]: Finished finitePrefix Result has 28 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 15 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-10-16 01:46:30,375 INFO L132 encePairwiseOnDemand]: 112/113 looper letters, 0 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2020-10-16 01:46:30,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 43 flow [2020-10-16 01:46:30,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 01:46:30,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 01:46:30,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 215 transitions. [2020-10-16 01:46:30,390 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.9513274336283186 [2020-10-16 01:46:30,391 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 215 transitions. [2020-10-16 01:46:30,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 215 transitions. [2020-10-16 01:46:30,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:30,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 215 transitions. [2020-10-16 01:46:30,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 01:46:30,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 01:46:30,406 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 01:46:30,408 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states and 215 transitions. [2020-10-16 01:46:30,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 43 flow [2020-10-16 01:46:30,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 40 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:46:30,414 INFO L241 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2020-10-16 01:46:30,417 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2020-10-16 01:46:30,418 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2020-10-16 01:46:30,418 INFO L481 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2020-10-16 01:46:30,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 01:46:30,418 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:30,419 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:30,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:46:30,419 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:30,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:30,420 INFO L82 PathProgramCache]: Analyzing trace with hash 272778124, now seen corresponding path program 1 times [2020-10-16 01:46:30,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:30,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419238423] [2020-10-16 01:46:30,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:30,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419238423] [2020-10-16 01:46:30,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:30,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:46:30,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472631201] [2020-10-16 01:46:30,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:46:30,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:30,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:46:30,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:46:30,567 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 113 [2020-10-16 01:46:30,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states. [2020-10-16 01:46:30,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:30,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 113 [2020-10-16 01:46:30,568 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:30,590 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2020-10-16 01:46:30,591 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:30,591 INFO L80 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 25 events. 3/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 1 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 41. Up to 10 conditions per place. [2020-10-16 01:46:30,592 INFO L132 encePairwiseOnDemand]: 109/113 looper letters, 3 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2020-10-16 01:46:30,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 19 transitions, 56 flow [2020-10-16 01:46:30,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:46:30,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:46:30,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2020-10-16 01:46:30,596 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8702064896755162 [2020-10-16 01:46:30,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2020-10-16 01:46:30,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2020-10-16 01:46:30,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:30,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2020-10-16 01:46:30,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:46:30,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:46:30,601 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:46:30,601 INFO L185 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 295 transitions. [2020-10-16 01:46:30,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 19 transitions, 56 flow [2020-10-16 01:46:30,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 56 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 01:46:30,603 INFO L241 Difference]: Finished difference. Result has 28 places, 19 transitions, 59 flow [2020-10-16 01:46:30,604 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2020-10-16 01:46:30,604 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2020-10-16 01:46:30,605 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 59 flow [2020-10-16 01:46:30,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:46:30,605 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:30,605 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:30,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:46:30,605 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:30,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:30,606 INFO L82 PathProgramCache]: Analyzing trace with hash -133813314, now seen corresponding path program 1 times [2020-10-16 01:46:30,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:30,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879091300] [2020-10-16 01:46:30,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:30,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879091300] [2020-10-16 01:46:30,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:30,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:46:30,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572596993] [2020-10-16 01:46:30,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:46:30,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:30,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:46:30,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:46:30,741 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 113 [2020-10-16 01:46:30,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 59 flow. Second operand 4 states. [2020-10-16 01:46:30,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:30,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 113 [2020-10-16 01:46:30,742 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:30,817 INFO L129 PetriNetUnfolder]: 42/96 cut-off events. [2020-10-16 01:46:30,818 INFO L130 PetriNetUnfolder]: For 15/20 co-relation queries the response was YES. [2020-10-16 01:46:30,819 INFO L80 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 96 events. 42/96 cut-off events. For 15/20 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 366 event pairs, 18 based on Foata normal form. 16/105 useless extension candidates. Maximal degree in co-relation 205. Up to 61 conditions per place. [2020-10-16 01:46:30,821 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 7 selfloop transitions, 7 changer transitions 2/29 dead transitions. [2020-10-16 01:46:30,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 111 flow [2020-10-16 01:46:30,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:46:30,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:46:30,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 438 transitions. [2020-10-16 01:46:30,826 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7752212389380531 [2020-10-16 01:46:30,826 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 438 transitions. [2020-10-16 01:46:30,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 438 transitions. [2020-10-16 01:46:30,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:30,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 438 transitions. [2020-10-16 01:46:30,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:46:30,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:46:30,832 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:46:30,832 INFO L185 Difference]: Start difference. First operand has 28 places, 19 transitions, 59 flow. Second operand 5 states and 438 transitions. [2020-10-16 01:46:30,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 111 flow [2020-10-16 01:46:30,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:46:30,835 INFO L241 Difference]: Finished difference. Result has 34 places, 25 transitions, 110 flow [2020-10-16 01:46:30,835 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2020-10-16 01:46:30,835 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 01:46:30,835 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 110 flow [2020-10-16 01:46:30,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:46:30,836 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:30,836 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:30,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:46:30,837 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:30,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:30,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1303269589, now seen corresponding path program 1 times [2020-10-16 01:46:30,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:30,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728690331] [2020-10-16 01:46:30,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:30,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728690331] [2020-10-16 01:46:30,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:30,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:46:30,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847201219] [2020-10-16 01:46:30,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:46:30,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:30,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:46:30,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:46:30,951 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 113 [2020-10-16 01:46:30,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 110 flow. Second operand 5 states. [2020-10-16 01:46:30,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:30,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 113 [2020-10-16 01:46:30,952 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:31,029 INFO L129 PetriNetUnfolder]: 25/76 cut-off events. [2020-10-16 01:46:31,030 INFO L130 PetriNetUnfolder]: For 115/148 co-relation queries the response was YES. [2020-10-16 01:46:31,031 INFO L80 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 76 events. 25/76 cut-off events. For 115/148 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 266 event pairs, 3 based on Foata normal form. 31/103 useless extension candidates. Maximal degree in co-relation 268. Up to 52 conditions per place. [2020-10-16 01:46:31,032 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 5 selfloop transitions, 13 changer transitions 4/35 dead transitions. [2020-10-16 01:46:31,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 212 flow [2020-10-16 01:46:31,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:46:31,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:46:31,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 612 transitions. [2020-10-16 01:46:31,035 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7737041719342604 [2020-10-16 01:46:31,035 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 612 transitions. [2020-10-16 01:46:31,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 612 transitions. [2020-10-16 01:46:31,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:31,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 612 transitions. [2020-10-16 01:46:31,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:46:31,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:46:31,041 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:46:31,041 INFO L185 Difference]: Start difference. First operand has 34 places, 25 transitions, 110 flow. Second operand 7 states and 612 transitions. [2020-10-16 01:46:31,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 212 flow [2020-10-16 01:46:31,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:46:31,045 INFO L241 Difference]: Finished difference. Result has 42 places, 31 transitions, 194 flow [2020-10-16 01:46:31,045 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=194, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2020-10-16 01:46:31,045 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2020-10-16 01:46:31,046 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 194 flow [2020-10-16 01:46:31,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:46:31,046 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:31,046 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:31,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:46:31,047 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:31,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:31,047 INFO L82 PathProgramCache]: Analyzing trace with hash -626420579, now seen corresponding path program 1 times [2020-10-16 01:46:31,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:31,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732897485] [2020-10-16 01:46:31,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:31,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732897485] [2020-10-16 01:46:31,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:31,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:46:31,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308796462] [2020-10-16 01:46:31,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:46:31,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:31,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:46:31,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:46:31,183 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 113 [2020-10-16 01:46:31,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 194 flow. Second operand 6 states. [2020-10-16 01:46:31,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:31,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 113 [2020-10-16 01:46:31,184 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:31,281 INFO L129 PetriNetUnfolder]: 13/58 cut-off events. [2020-10-16 01:46:31,282 INFO L130 PetriNetUnfolder]: For 238/274 co-relation queries the response was YES. [2020-10-16 01:46:31,283 INFO L80 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 58 events. 13/58 cut-off events. For 238/274 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 194 event pairs, 0 based on Foata normal form. 29/84 useless extension candidates. Maximal degree in co-relation 263. Up to 41 conditions per place. [2020-10-16 01:46:31,284 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 2 selfloop transitions, 17 changer transitions 3/35 dead transitions. [2020-10-16 01:46:31,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 35 transitions, 270 flow [2020-10-16 01:46:31,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 01:46:31,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-16 01:46:31,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 780 transitions. [2020-10-16 01:46:31,287 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7669616519174042 [2020-10-16 01:46:31,287 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 780 transitions. [2020-10-16 01:46:31,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 780 transitions. [2020-10-16 01:46:31,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:31,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 780 transitions. [2020-10-16 01:46:31,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-16 01:46:31,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-16 01:46:31,292 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-16 01:46:31,292 INFO L185 Difference]: Start difference. First operand has 42 places, 31 transitions, 194 flow. Second operand 9 states and 780 transitions. [2020-10-16 01:46:31,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 35 transitions, 270 flow [2020-10-16 01:46:31,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 35 transitions, 240 flow, removed 11 selfloop flow, removed 2 redundant places. [2020-10-16 01:46:31,297 INFO L241 Difference]: Finished difference. Result has 51 places, 32 transitions, 220 flow [2020-10-16 01:46:31,297 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=220, PETRI_PLACES=51, PETRI_TRANSITIONS=32} [2020-10-16 01:46:31,298 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2020-10-16 01:46:31,298 INFO L481 AbstractCegarLoop]: Abstraction has has 51 places, 32 transitions, 220 flow [2020-10-16 01:46:31,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:46:31,298 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:31,298 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:31,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:46:31,299 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:31,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:31,299 INFO L82 PathProgramCache]: Analyzing trace with hash -72143901, now seen corresponding path program 1 times [2020-10-16 01:46:31,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:31,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644698911] [2020-10-16 01:46:31,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:31,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644698911] [2020-10-16 01:46:31,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:31,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:46:31,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842209744] [2020-10-16 01:46:31,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:46:31,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:31,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:46:31,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:46:31,335 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 113 [2020-10-16 01:46:31,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 32 transitions, 220 flow. Second operand 3 states. [2020-10-16 01:46:31,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:31,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 113 [2020-10-16 01:46:31,336 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:31,354 INFO L129 PetriNetUnfolder]: 14/68 cut-off events. [2020-10-16 01:46:31,355 INFO L130 PetriNetUnfolder]: For 249/259 co-relation queries the response was YES. [2020-10-16 01:46:31,355 INFO L80 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 68 events. 14/68 cut-off events. For 249/259 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 269 event pairs, 0 based on Foata normal form. 5/69 useless extension candidates. Maximal degree in co-relation 273. Up to 28 conditions per place. [2020-10-16 01:46:31,356 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 2 selfloop transitions, 2 changer transitions 9/32 dead transitions. [2020-10-16 01:46:31,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 32 transitions, 232 flow [2020-10-16 01:46:31,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:46:31,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:46:31,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2020-10-16 01:46:31,358 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8672566371681416 [2020-10-16 01:46:31,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2020-10-16 01:46:31,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2020-10-16 01:46:31,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:31,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2020-10-16 01:46:31,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:46:31,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:46:31,360 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:46:31,361 INFO L185 Difference]: Start difference. First operand has 51 places, 32 transitions, 220 flow. Second operand 3 states and 294 transitions. [2020-10-16 01:46:31,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 32 transitions, 232 flow [2020-10-16 01:46:31,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 32 transitions, 174 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-16 01:46:31,365 INFO L241 Difference]: Finished difference. Result has 45 places, 23 transitions, 114 flow [2020-10-16 01:46:31,365 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=45, PETRI_TRANSITIONS=23} [2020-10-16 01:46:31,365 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2020-10-16 01:46:31,366 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 23 transitions, 114 flow [2020-10-16 01:46:31,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:46:31,366 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:31,366 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:31,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:46:31,366 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:31,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:31,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1779065763, now seen corresponding path program 2 times [2020-10-16 01:46:31,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:31,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794712461] [2020-10-16 01:46:31,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:31,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:31,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794712461] [2020-10-16 01:46:31,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:31,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:46:31,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023095815] [2020-10-16 01:46:31,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:46:31,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:31,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:46:31,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:46:31,405 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2020-10-16 01:46:31,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 23 transitions, 114 flow. Second operand 4 states. [2020-10-16 01:46:31,406 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:31,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2020-10-16 01:46:31,406 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:31,425 INFO L129 PetriNetUnfolder]: 10/41 cut-off events. [2020-10-16 01:46:31,426 INFO L130 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2020-10-16 01:46:31,426 INFO L80 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 41 events. 10/41 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 88 event pairs, 0 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 112. Up to 15 conditions per place. [2020-10-16 01:46:31,427 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 3 selfloop transitions, 1 changer transitions 1/24 dead transitions. [2020-10-16 01:46:31,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 24 transitions, 126 flow [2020-10-16 01:46:31,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:46:31,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:46:31,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2020-10-16 01:46:31,429 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.827433628318584 [2020-10-16 01:46:31,429 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 374 transitions. [2020-10-16 01:46:31,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 374 transitions. [2020-10-16 01:46:31,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:31,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 374 transitions. [2020-10-16 01:46:31,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:46:31,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:46:31,432 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:46:31,432 INFO L185 Difference]: Start difference. First operand has 45 places, 23 transitions, 114 flow. Second operand 4 states and 374 transitions. [2020-10-16 01:46:31,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 24 transitions, 126 flow [2020-10-16 01:46:31,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 24 transitions, 102 flow, removed 7 selfloop flow, removed 9 redundant places. [2020-10-16 01:46:31,434 INFO L241 Difference]: Finished difference. Result has 36 places, 23 transitions, 97 flow [2020-10-16 01:46:31,435 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2020-10-16 01:46:31,435 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 01:46:31,435 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 97 flow [2020-10-16 01:46:31,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:46:31,435 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:31,435 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:31,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:46:31,436 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:31,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:31,436 INFO L82 PathProgramCache]: Analyzing trace with hash -669841867, now seen corresponding path program 3 times [2020-10-16 01:46:31,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:31,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265129216] [2020-10-16 01:46:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:31,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:31,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265129216] [2020-10-16 01:46:31,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:31,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:46:31,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223876833] [2020-10-16 01:46:31,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:46:31,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:31,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:46:31,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:46:31,477 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2020-10-16 01:46:31,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 23 transitions, 97 flow. Second operand 4 states. [2020-10-16 01:46:31,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:31,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2020-10-16 01:46:31,478 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:31,494 INFO L129 PetriNetUnfolder]: 7/38 cut-off events. [2020-10-16 01:46:31,495 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-10-16 01:46:31,495 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 38 events. 7/38 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 78 event pairs, 0 based on Foata normal form. 1/37 useless extension candidates. Maximal degree in co-relation 93. Up to 12 conditions per place. [2020-10-16 01:46:31,495 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2020-10-16 01:46:31,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 23 transitions, 103 flow [2020-10-16 01:46:31,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:46:31,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:46:31,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2020-10-16 01:46:31,497 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8252212389380531 [2020-10-16 01:46:31,498 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2020-10-16 01:46:31,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2020-10-16 01:46:31,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:31,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2020-10-16 01:46:31,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:46:31,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:46:31,500 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:46:31,500 INFO L185 Difference]: Start difference. First operand has 36 places, 23 transitions, 97 flow. Second operand 4 states and 373 transitions. [2020-10-16 01:46:31,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 23 transitions, 103 flow [2020-10-16 01:46:31,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 23 transitions, 102 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:46:31,502 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2020-10-16 01:46:31,502 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2020-10-16 01:46:31,502 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 01:46:31,502 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2020-10-16 01:46:31,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:46:31,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:46:31,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:46:31 BasicIcfg [2020-10-16 01:46:31,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:46:31,510 INFO L168 Benchmark]: Toolchain (without parser) took 4070.01 ms. Allocated memory was 253.2 MB in the beginning and 373.3 MB in the end (delta: 120.1 MB). Free memory was 208.6 MB in the beginning and 249.4 MB in the end (delta: -40.8 MB). Peak memory consumption was 79.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:31,510 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:46:31,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.29 ms. Allocated memory was 253.2 MB in the beginning and 320.9 MB in the end (delta: 67.6 MB). Free memory was 208.6 MB in the beginning and 274.1 MB in the end (delta: -65.5 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:31,512 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.21 ms. Allocated memory is still 320.9 MB. Free memory was 274.1 MB in the beginning and 271.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:31,513 INFO L168 Benchmark]: Boogie Preprocessor took 25.97 ms. Allocated memory is still 320.9 MB. Free memory was 271.6 MB in the beginning and 269.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:31,514 INFO L168 Benchmark]: RCFGBuilder took 417.04 ms. Allocated memory is still 320.9 MB. Free memory was 269.1 MB in the beginning and 247.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:31,514 INFO L168 Benchmark]: TraceAbstraction took 2894.43 ms. Allocated memory was 320.9 MB in the beginning and 373.3 MB in the end (delta: 52.4 MB). Free memory was 247.3 MB in the beginning and 249.4 MB in the end (delta: -2.1 MB). Peak memory consumption was 50.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:31,518 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 683.29 ms. Allocated memory was 253.2 MB in the beginning and 320.9 MB in the end (delta: 67.6 MB). Free memory was 208.6 MB in the beginning and 274.1 MB in the end (delta: -65.5 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 44.21 ms. Allocated memory is still 320.9 MB. Free memory was 274.1 MB in the beginning and 271.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.97 ms. Allocated memory is still 320.9 MB. Free memory was 271.6 MB in the beginning and 269.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 417.04 ms. Allocated memory is still 320.9 MB. Free memory was 269.1 MB in the beginning and 247.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2894.43 ms. Allocated memory was 320.9 MB in the beginning and 373.3 MB in the end (delta: 52.4 MB). Free memory was 247.3 MB in the beginning and 249.4 MB in the end (delta: -2.1 MB). Peak memory consumption was 50.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 594 VarBasedMoverChecksPositive, 47 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 71 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 43 TotalNumberOfCompositions, 1810 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 26 SDtfs, 15 SDslu, 13 SDs, 0 SdLazy, 99 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=220occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 2746 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...