/usr/bin/java -Xmx8000000000 -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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-16 00:05:04,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 00:05:04,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 00:05:04,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 00:05:04,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 00:05:04,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 00:05:04,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 00:05:04,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 00:05:04,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 00:05:04,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 00:05:04,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 00:05:04,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 00:05:04,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 00:05:04,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 00:05:04,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 00:05:04,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 00:05:04,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 00:05:04,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 00:05:04,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 00:05:04,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 00:05:04,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 00:05:04,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 00:05:04,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 00:05:04,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 00:05:04,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-16 00:05:04,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 00:05:04,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 00:05:04,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 00:05:04,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 00:05:04,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 00:05:04,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 00:05:04,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 00:05:04,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 00:05:04,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 00:05:04,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 00:05:04,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 00:05:04,321 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-16 00:05:04,365 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 00:05:04,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 00:05:04,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 00:05:04,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 00:05:04,368 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 00:05:04,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 00:05:04,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 00:05:04,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 00:05:04,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 00:05:04,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 00:05:04,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 00:05:04,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 00:05:04,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 00:05:04,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 00:05:04,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 00:05:04,371 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 00:05:04,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 00:05:04,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 00:05:04,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 00:05:04,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 00:05:04,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 00:05:04,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 00:05:04,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 00:05:04,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-16 00:05:04,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 00:05:04,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 00:05:04,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 00:05:04,374 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-16 00:05:04,374 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-16 00:05:04,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 00:05:04,374 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-16 00:05:04,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 00:05:04,843 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 00:05:04,847 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 00:05:04,849 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 00:05:04,850 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 00:05:04,851 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-09-16 00:05:04,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5899569f9/ffef381480a544cbbf242df45bb4e9c3/FLAG4003bb057 [2020-09-16 00:05:05,629 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 00:05:05,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-09-16 00:05:05,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5899569f9/ffef381480a544cbbf242df45bb4e9c3/FLAG4003bb057 [2020-09-16 00:05:05,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5899569f9/ffef381480a544cbbf242df45bb4e9c3 [2020-09-16 00:05:05,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 00:05:05,831 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 00:05:05,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 00:05:05,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 00:05:05,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 00:05:05,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:05:05" (1/1) ... [2020-09-16 00:05:05,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f4cdb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:05, skipping insertion in model container [2020-09-16 00:05:05,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:05:05" (1/1) ... [2020-09-16 00:05:05,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 00:05:05,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 00:05:06,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 00:05:06,493 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 00:05:06,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 00:05:06,628 INFO L208 MainTranslator]: Completed translation [2020-09-16 00:05:06,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:06 WrapperNode [2020-09-16 00:05:06,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 00:05:06,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 00:05:06,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 00:05:06,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 00:05:06,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:06" (1/1) ... [2020-09-16 00:05:06,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:06" (1/1) ... [2020-09-16 00:05:06,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 00:05:06,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 00:05:06,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 00:05:06,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 00:05:06,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:06" (1/1) ... [2020-09-16 00:05:06,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:06" (1/1) ... [2020-09-16 00:05:06,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:06" (1/1) ... [2020-09-16 00:05:06,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:06" (1/1) ... [2020-09-16 00:05:06,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:06" (1/1) ... [2020-09-16 00:05:06,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:06" (1/1) ... [2020-09-16 00:05:06,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:06" (1/1) ... [2020-09-16 00:05:06,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 00:05:06,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 00:05:06,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 00:05:06,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 00:05:06,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-16 00:05:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 00:05:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 00:05:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 00:05:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 00:05:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 00:05:06,813 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 00:05:06,814 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 00:05:06,814 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 00:05:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-16 00:05:06,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-16 00:05:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 00:05:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 00:05:06,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 00:05:06,817 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 00:05:07,203 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 00:05:07,204 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 00:05:07,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:05:07 BoogieIcfgContainer [2020-09-16 00:05:07,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 00:05:07,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 00:05:07,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 00:05:07,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 00:05:07,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:05:05" (1/3) ... [2020-09-16 00:05:07,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b419a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:05:07, skipping insertion in model container [2020-09-16 00:05:07,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:06" (2/3) ... [2020-09-16 00:05:07,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b419a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:05:07, skipping insertion in model container [2020-09-16 00:05:07,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:05:07" (3/3) ... [2020-09-16 00:05:07,219 INFO L109 eAbstractionObserver]: Analyzing ICFG safe021_tso.oepc.i [2020-09-16 00:05:07,231 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 00:05:07,231 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-16 00:05:07,242 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 00:05:07,244 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 00:05:07,274 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,274 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,274 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,275 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,275 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,275 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,276 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,276 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,276 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,277 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,277 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,277 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,278 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,278 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,278 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,279 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,279 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,279 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,283 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,284 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,284 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,295 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,295 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,299 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,300 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,300 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,300 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:05:07,322 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 00:05:07,346 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 00:05:07,346 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 00:05:07,347 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 00:05:07,347 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 00:05:07,347 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 00:05:07,347 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 00:05:07,347 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 00:05:07,348 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 00:05:07,365 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-16 00:05:07,368 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-16 00:05:07,421 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-16 00:05:07,421 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 00:05:07,427 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 46 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. [2020-09-16 00:05:07,431 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-16 00:05:07,453 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-16 00:05:07,454 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 00:05:07,454 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 46 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. [2020-09-16 00:05:07,457 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-16 00:05:07,458 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 00:05:08,788 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2250 [2020-09-16 00:05:08,789 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-09-16 00:05:08,794 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-16 00:05:08,845 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-16 00:05:08,848 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-16 00:05:08,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 00:05:08,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:05:08,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:05:08,860 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:05:08,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:05:08,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-09-16 00:05:08,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:05:08,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030369389] [2020-09-16 00:05:08,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:05:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:05:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:05:09,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030369389] [2020-09-16 00:05:09,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:05:09,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:05:09,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1211808898] [2020-09-16 00:05:09,122 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:05:09,126 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:05:09,144 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-16 00:05:09,145 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:05:09,147 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:05:09,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-16 00:05:09,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:05:09,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-16 00:05:09,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-16 00:05:09,166 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-16 00:05:09,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:05:09,196 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-16 00:05:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-16 00:05:09,198 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-16 00:05:09,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:05:09,218 INFO L225 Difference]: With dead ends: 362 [2020-09-16 00:05:09,218 INFO L226 Difference]: Without dead ends: 298 [2020-09-16 00:05:09,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-16 00:05:09,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-16 00:05:09,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-16 00:05:09,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-16 00:05:09,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-16 00:05:09,316 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-16 00:05:09,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:05:09,318 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-16 00:05:09,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-16 00:05:09,318 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-16 00:05:09,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 00:05:09,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:05:09,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:05:09,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 00:05:09,326 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:05:09,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:05:09,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-09-16 00:05:09,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:05:09,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205092457] [2020-09-16 00:05:09,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:05:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:05:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:05:09,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205092457] [2020-09-16 00:05:09,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:05:09,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:05:09,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2003620726] [2020-09-16 00:05:09,474 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:05:09,475 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:05:09,477 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-16 00:05:09,477 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:05:09,478 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:05:09,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:05:09,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:05:09,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:05:09,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:05:09,481 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-09-16 00:05:09,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:05:09,518 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-09-16 00:05:09,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 00:05:09,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-16 00:05:09,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:05:09,523 INFO L225 Difference]: With dead ends: 346 [2020-09-16 00:05:09,523 INFO L226 Difference]: Without dead ends: 282 [2020-09-16 00:05:09,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:05:09,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-16 00:05:09,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-09-16 00:05:09,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-09-16 00:05:09,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-09-16 00:05:09,551 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-09-16 00:05:09,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:05:09,551 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-09-16 00:05:09,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:05:09,552 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-09-16 00:05:09,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 00:05:09,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:05:09,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:05:09,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 00:05:09,554 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:05:09,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:05:09,554 INFO L82 PathProgramCache]: Analyzing trace with hash -485254353, now seen corresponding path program 1 times [2020-09-16 00:05:09,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:05:09,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566190101] [2020-09-16 00:05:09,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:05:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:05:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:05:09,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566190101] [2020-09-16 00:05:09,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:05:09,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:05:09,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [402990773] [2020-09-16 00:05:09,689 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:05:09,690 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:05:09,691 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-09-16 00:05:09,691 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:05:09,730 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:05:09,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:05:09,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:05:09,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:05:09,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:05:09,731 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-09-16 00:05:09,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:05:09,760 INFO L93 Difference]: Finished difference Result 310 states and 844 transitions. [2020-09-16 00:05:09,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 00:05:09,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-16 00:05:09,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:05:09,763 INFO L225 Difference]: With dead ends: 310 [2020-09-16 00:05:09,763 INFO L226 Difference]: Without dead ends: 254 [2020-09-16 00:05:09,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:05:09,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-16 00:05:09,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-09-16 00:05:09,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-16 00:05:09,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 708 transitions. [2020-09-16 00:05:09,782 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 708 transitions. Word has length 10 [2020-09-16 00:05:09,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:05:09,782 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 708 transitions. [2020-09-16 00:05:09,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:05:09,783 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 708 transitions. [2020-09-16 00:05:09,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 00:05:09,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:05:09,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:05:09,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 00:05:09,785 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:05:09,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:05:09,785 INFO L82 PathProgramCache]: Analyzing trace with hash 2136362745, now seen corresponding path program 1 times [2020-09-16 00:05:09,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:05:09,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202221180] [2020-09-16 00:05:09,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:05:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:05:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:05:09,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202221180] [2020-09-16 00:05:09,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:05:09,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:05:09,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [586360347] [2020-09-16 00:05:09,869 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:05:09,871 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:05:09,872 INFO L274 McrAutomatonBuilder]: Finished intersection with 18 states and 24 transitions. [2020-09-16 00:05:09,873 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:05:09,914 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:05:09,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 00:05:09,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:05:09,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 00:05:09,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:05:09,915 INFO L87 Difference]: Start difference. First operand 254 states and 708 transitions. Second operand 5 states. [2020-09-16 00:05:09,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:05:09,962 INFO L93 Difference]: Finished difference Result 308 states and 834 transitions. [2020-09-16 00:05:09,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 00:05:09,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-16 00:05:09,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:05:09,965 INFO L225 Difference]: With dead ends: 308 [2020-09-16 00:05:09,965 INFO L226 Difference]: Without dead ends: 170 [2020-09-16 00:05:09,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-16 00:05:09,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-09-16 00:05:09,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-09-16 00:05:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-09-16 00:05:09,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 432 transitions. [2020-09-16 00:05:09,974 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 432 transitions. Word has length 11 [2020-09-16 00:05:09,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:05:09,975 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 432 transitions. [2020-09-16 00:05:09,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 00:05:09,975 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 432 transitions. [2020-09-16 00:05:09,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 00:05:09,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:05:09,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:05:09,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 00:05:09,977 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:05:09,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:05:09,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1820296279, now seen corresponding path program 1 times [2020-09-16 00:05:09,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:05:09,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678288778] [2020-09-16 00:05:09,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:05:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:05:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:05:10,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678288778] [2020-09-16 00:05:10,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:05:10,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:05:10,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [702522532] [2020-09-16 00:05:10,050 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:05:10,051 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:05:10,053 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-09-16 00:05:10,053 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:05:10,086 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:05:10,125 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:05:10,150 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:05:10,170 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4168#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-16 00:05:10,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 00:05:10,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:05:10,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 00:05:10,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:05:10,172 INFO L87 Difference]: Start difference. First operand 170 states and 432 transitions. Second operand 5 states. [2020-09-16 00:05:10,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:05:10,239 INFO L93 Difference]: Finished difference Result 144 states and 325 transitions. [2020-09-16 00:05:10,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 00:05:10,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-16 00:05:10,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:05:10,242 INFO L225 Difference]: With dead ends: 144 [2020-09-16 00:05:10,242 INFO L226 Difference]: Without dead ends: 104 [2020-09-16 00:05:10,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-16 00:05:10,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-16 00:05:10,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-16 00:05:10,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-16 00:05:10,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 215 transitions. [2020-09-16 00:05:10,247 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 215 transitions. Word has length 12 [2020-09-16 00:05:10,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:05:10,247 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 215 transitions. [2020-09-16 00:05:10,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 00:05:10,247 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 215 transitions. [2020-09-16 00:05:10,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 00:05:10,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:05:10,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:05:10,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 00:05:10,249 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:05:10,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:05:10,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1420096236, now seen corresponding path program 1 times [2020-09-16 00:05:10,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:05:10,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093723661] [2020-09-16 00:05:10,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:05:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:05:10,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:05:10,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093723661] [2020-09-16 00:05:10,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:05:10,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-16 00:05:10,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [745313569] [2020-09-16 00:05:10,341 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:05:10,343 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:05:10,345 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 23 transitions. [2020-09-16 00:05:10,345 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:05:10,361 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:05:10,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 00:05:10,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:05:10,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 00:05:10,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 00:05:10,362 INFO L87 Difference]: Start difference. First operand 104 states and 215 transitions. Second operand 6 states. [2020-09-16 00:05:10,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:05:10,436 INFO L93 Difference]: Finished difference Result 93 states and 191 transitions. [2020-09-16 00:05:10,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 00:05:10,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-16 00:05:10,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:05:10,437 INFO L225 Difference]: With dead ends: 93 [2020-09-16 00:05:10,438 INFO L226 Difference]: Without dead ends: 85 [2020-09-16 00:05:10,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-16 00:05:10,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-16 00:05:10,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-09-16 00:05:10,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-16 00:05:10,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 177 transitions. [2020-09-16 00:05:10,441 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 177 transitions. Word has length 15 [2020-09-16 00:05:10,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:05:10,442 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 177 transitions. [2020-09-16 00:05:10,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 00:05:10,442 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 177 transitions. [2020-09-16 00:05:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-16 00:05:10,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:05:10,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:05:10,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 00:05:10,444 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:05:10,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:05:10,444 INFO L82 PathProgramCache]: Analyzing trace with hash -572692364, now seen corresponding path program 1 times [2020-09-16 00:05:10,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:05:10,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704344732] [2020-09-16 00:05:10,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:05:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:05:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:05:10,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704344732] [2020-09-16 00:05:10,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:05:10,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:05:10,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [638631711] [2020-09-16 00:05:10,508 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:05:10,511 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:05:10,515 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 34 transitions. [2020-09-16 00:05:10,515 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:05:10,521 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:05:10,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:05:10,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:05:10,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:05:10,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:05:10,522 INFO L87 Difference]: Start difference. First operand 85 states and 177 transitions. Second operand 4 states. [2020-09-16 00:05:10,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:05:10,540 INFO L93 Difference]: Finished difference Result 117 states and 236 transitions. [2020-09-16 00:05:10,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 00:05:10,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-16 00:05:10,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:05:10,541 INFO L225 Difference]: With dead ends: 117 [2020-09-16 00:05:10,542 INFO L226 Difference]: Without dead ends: 55 [2020-09-16 00:05:10,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:05:10,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-16 00:05:10,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-16 00:05:10,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-16 00:05:10,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-09-16 00:05:10,545 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-09-16 00:05:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:05:10,545 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-09-16 00:05:10,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:05:10,545 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-09-16 00:05:10,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-16 00:05:10,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:05:10,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:05:10,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 00:05:10,547 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:05:10,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:05:10,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1123595488, now seen corresponding path program 2 times [2020-09-16 00:05:10,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:05:10,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384713919] [2020-09-16 00:05:10,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:05:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:05:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:05:10,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384713919] [2020-09-16 00:05:10,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:05:10,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 00:05:10,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1764307883] [2020-09-16 00:05:10,629 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:05:10,632 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:05:10,640 INFO L274 McrAutomatonBuilder]: Finished intersection with 58 states and 100 transitions. [2020-09-16 00:05:10,641 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:05:10,780 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:05:10,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 00:05:10,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:05:10,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 00:05:10,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:05:10,782 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-09-16 00:05:10,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:05:10,808 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-09-16 00:05:10,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 00:05:10,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-16 00:05:10,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:05:10,809 INFO L225 Difference]: With dead ends: 54 [2020-09-16 00:05:10,809 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 00:05:10,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-16 00:05:10,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 00:05:10,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 00:05:10,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 00:05:10,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 00:05:10,810 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-16 00:05:10,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:05:10,811 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 00:05:10,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 00:05:10,811 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 00:05:10,811 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 00:05:10,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 00:05:10,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 12:05:10 BasicIcfg [2020-09-16 00:05:10,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 00:05:10,820 INFO L168 Benchmark]: Toolchain (without parser) took 4990.66 ms. Allocated memory was 139.5 MB in the beginning and 248.5 MB in the end (delta: 109.1 MB). Free memory was 100.9 MB in the beginning and 156.7 MB in the end (delta: -55.8 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB. [2020-09-16 00:05:10,821 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-16 00:05:10,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 797.40 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.2 MB in the beginning and 161.1 MB in the end (delta: -60.9 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-09-16 00:05:10,823 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.88 ms. Allocated memory is still 203.4 MB. Free memory was 161.1 MB in the beginning and 158.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-09-16 00:05:10,824 INFO L168 Benchmark]: Boogie Preprocessor took 31.18 ms. Allocated memory is still 203.4 MB. Free memory was 158.9 MB in the beginning and 157.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-16 00:05:10,825 INFO L168 Benchmark]: RCFGBuilder took 488.58 ms. Allocated memory is still 203.4 MB. Free memory was 156.9 MB in the beginning and 135.3 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-09-16 00:05:10,826 INFO L168 Benchmark]: TraceAbstraction took 3605.73 ms. Allocated memory was 203.4 MB in the beginning and 248.5 MB in the end (delta: 45.1 MB). Free memory was 134.7 MB in the beginning and 156.7 MB in the end (delta: -22.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-09-16 00:05:10,830 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 797.40 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.2 MB in the beginning and 161.1 MB in the end (delta: -60.9 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.88 ms. Allocated memory is still 203.4 MB. Free memory was 161.1 MB in the beginning and 158.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.18 ms. Allocated memory is still 203.4 MB. Free memory was 158.9 MB in the beginning and 157.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 488.58 ms. Allocated memory is still 203.4 MB. Free memory was 156.9 MB in the beginning and 135.3 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3605.73 ms. Allocated memory was 203.4 MB in the beginning and 248.5 MB in the end (delta: 45.1 MB). Free memory was 134.7 MB in the beginning and 156.7 MB in the end (delta: -22.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 78 ProgramPointsBefore, 32 ProgramPointsAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 635 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2250 CheckedPairsTotal, 55 TotalNumberOfCompositions - 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. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 181 SDtfs, 159 SDslu, 271 SDs, 0 SdLazy, 92 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 2834 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...