/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:19:05,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:19:05,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:19:05,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:19:05,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:19:05,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:19:05,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:19:05,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:19:05,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:19:05,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:19:05,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:19:05,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:19:05,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:19:05,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:19:05,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:19:05,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:19:05,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:19:05,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:19:05,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:19:05,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:19:05,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:19:05,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:19:05,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:19:05,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:19:05,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 11:19:05,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:19:05,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:19:05,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:19:05,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:19:05,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:19:05,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:19:05,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:19:05,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:19:05,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:19:05,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:19:05,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:19:05,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:19:05,610 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:19:05,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:19:05,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:19:05,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:19:05,612 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:19:05,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:19:05,613 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:19:05,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:19:05,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:19:05,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:19:05,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:19:05,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:19:05,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:19:05,614 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:19:05,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:19:05,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:19:05,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:19:05,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:19:05,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:19:05,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:19:05,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:19:05,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:19:05,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:19:05,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:19:05,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:19:05,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:19:05,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:19:05,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:19:05,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:19:05,617 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:19:05,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:19:05,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:19:05,943 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:19:05,945 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:19:05,945 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:19:05,946 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-10-16 11:19:06,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a298bb759/457d4e7e9127449a9eff54bc53e4ca17/FLAGc411171fc [2020-10-16 11:19:06,565 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:19:06,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-10-16 11:19:06,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a298bb759/457d4e7e9127449a9eff54bc53e4ca17/FLAGc411171fc [2020-10-16 11:19:06,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a298bb759/457d4e7e9127449a9eff54bc53e4ca17 [2020-10-16 11:19:06,866 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:19:06,868 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:19:06,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:19:06,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:19:06,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:19:06,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:19:06" (1/1) ... [2020-10-16 11:19:06,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6039d482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:06, skipping insertion in model container [2020-10-16 11:19:06,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:19:06" (1/1) ... [2020-10-16 11:19:06,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:19:06,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:19:07,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:19:07,464 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:19:07,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:19:07,632 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:19:07,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:07 WrapperNode [2020-10-16 11:19:07,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:19:07,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:19:07,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:19:07,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:19:07,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:07" (1/1) ... [2020-10-16 11:19:07,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:07" (1/1) ... [2020-10-16 11:19:07,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:19:07,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:19:07,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:19:07,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:19:07,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:07" (1/1) ... [2020-10-16 11:19:07,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:07" (1/1) ... [2020-10-16 11:19:07,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:07" (1/1) ... [2020-10-16 11:19:07,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:07" (1/1) ... [2020-10-16 11:19:07,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:07" (1/1) ... [2020-10-16 11:19:07,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:07" (1/1) ... [2020-10-16 11:19:07,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:07" (1/1) ... [2020-10-16 11:19:07,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:19:07,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:19:07,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:19:07,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:19:07,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:07" (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 [2020-10-16 11:19:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:19:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:19:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:19:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:19:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 11:19:07,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 11:19:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 11:19:07,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 11:19:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 11:19:07,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 11:19:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:19:07,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:19:07,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:19:07,781 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 11:19:08,164 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:19:08,164 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:19:08,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:19:08 BoogieIcfgContainer [2020-10-16 11:19:08,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:19:08,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:19:08,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:19:08,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:19:08,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:19:06" (1/3) ... [2020-10-16 11:19:08,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c606266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:19:08, skipping insertion in model container [2020-10-16 11:19:08,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:07" (2/3) ... [2020-10-16 11:19:08,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c606266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:19:08, skipping insertion in model container [2020-10-16 11:19:08,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:19:08" (3/3) ... [2020-10-16 11:19:08,176 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2020-10-16 11:19:08,188 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:19:08,189 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:19:08,196 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:19:08,197 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:19:08,226 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,226 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,226 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,227 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,228 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,228 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,228 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,229 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,229 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,229 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,230 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,230 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,230 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,231 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,231 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,231 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,232 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,232 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,236 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,237 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,243 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,243 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,244 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,244 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,250 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,250 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,250 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,250 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:08,252 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:19:08,266 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:19:08,284 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:19:08,284 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:19:08,285 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:19:08,285 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:19:08,285 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:19:08,285 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:19:08,285 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:19:08,285 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:19:08,299 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:19:08,301 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 11:19:08,304 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 11:19:08,306 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 11:19:08,349 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 11:19:08,349 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:19:08,355 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. [2020-10-16 11:19:08,358 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 11:19:10,136 INFO L132 LiptonReduction]: Checked pairs total: 2810 [2020-10-16 11:19:10,136 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-16 11:19:10,144 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 11:19:10,171 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 11:19:10,173 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 11:19:10,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:19:10,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:10,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:10,183 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:10,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:10,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-10-16 11:19:10,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:10,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789972533] [2020-10-16 11:19:10,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:10,420 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 11:19:10,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789972533] [2020-10-16 11:19:10,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:10,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:19:10,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667879357] [2020-10-16 11:19:10,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:19:10,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:10,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:19:10,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:19:10,440 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 11:19:10,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:10,493 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-16 11:19:10,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:19:10,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 11:19:10,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:10,511 INFO L225 Difference]: With dead ends: 282 [2020-10-16 11:19:10,512 INFO L226 Difference]: Without dead ends: 218 [2020-10-16 11:19:10,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:19:10,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-16 11:19:10,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-16 11:19:10,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 11:19:10,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-16 11:19:10,585 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-16 11:19:10,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:10,586 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-16 11:19:10,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:19:10,587 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-16 11:19:10,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:19:10,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:10,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:10,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:19:10,589 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:10,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:10,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-10-16 11:19:10,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:10,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771320962] [2020-10-16 11:19:10,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:10,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:19:10,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771320962] [2020-10-16 11:19:10,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:10,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:19:10,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386802479] [2020-10-16 11:19:10,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:10,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:10,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:10,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:10,691 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-16 11:19:10,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:10,720 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-16 11:19:10,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:19:10,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 11:19:10,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:10,723 INFO L225 Difference]: With dead ends: 242 [2020-10-16 11:19:10,723 INFO L226 Difference]: Without dead ends: 116 [2020-10-16 11:19:10,724 INFO L677 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 [2020-10-16 11:19:10,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-16 11:19:10,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-16 11:19:10,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-16 11:19:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-10-16 11:19:10,739 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-10-16 11:19:10,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:10,739 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-10-16 11:19:10,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-10-16 11:19:10,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:19:10,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:10,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:10,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:19:10,741 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:10,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:10,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-10-16 11:19:10,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:10,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165378578] [2020-10-16 11:19:10,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:10,812 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 11:19:10,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165378578] [2020-10-16 11:19:10,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:10,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:19:10,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222673922] [2020-10-16 11:19:10,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:10,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:10,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:10,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:10,814 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 4 states. [2020-10-16 11:19:10,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:10,849 INFO L93 Difference]: Finished difference Result 164 states and 394 transitions. [2020-10-16 11:19:10,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:19:10,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 11:19:10,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:10,851 INFO L225 Difference]: With dead ends: 164 [2020-10-16 11:19:10,852 INFO L226 Difference]: Without dead ends: 92 [2020-10-16 11:19:10,852 INFO L677 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 [2020-10-16 11:19:10,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-16 11:19:10,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-16 11:19:10,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-16 11:19:10,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 214 transitions. [2020-10-16 11:19:10,862 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 214 transitions. Word has length 11 [2020-10-16 11:19:10,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:10,862 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 214 transitions. [2020-10-16 11:19:10,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:10,862 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 214 transitions. [2020-10-16 11:19:10,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:19:10,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:10,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:10,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:19:10,864 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:10,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:10,865 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-10-16 11:19:10,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:10,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767176171] [2020-10-16 11:19:10,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:10,952 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 11:19:10,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767176171] [2020-10-16 11:19:10,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:10,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:19:10,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011530616] [2020-10-16 11:19:10,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:10,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:10,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:10,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:10,957 INFO L87 Difference]: Start difference. First operand 92 states and 214 transitions. Second operand 4 states. [2020-10-16 11:19:11,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:11,005 INFO L93 Difference]: Finished difference Result 122 states and 275 transitions. [2020-10-16 11:19:11,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:19:11,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 11:19:11,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:11,007 INFO L225 Difference]: With dead ends: 122 [2020-10-16 11:19:11,007 INFO L226 Difference]: Without dead ends: 68 [2020-10-16 11:19:11,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:19:11,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-16 11:19:11,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-16 11:19:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-16 11:19:11,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-16 11:19:11,014 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-10-16 11:19:11,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:11,015 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-16 11:19:11,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:11,015 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-16 11:19:11,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:19:11,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:11,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:11,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:19:11,016 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:11,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:11,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 1 times [2020-10-16 11:19:11,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:11,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206805232] [2020-10-16 11:19:11,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:11,143 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 11:19:11,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206805232] [2020-10-16 11:19:11,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:11,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:19:11,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791201173] [2020-10-16 11:19:11,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:11,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:11,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:11,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:11,146 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-16 11:19:11,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:11,182 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-16 11:19:11,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:19:11,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 11:19:11,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:11,184 INFO L225 Difference]: With dead ends: 81 [2020-10-16 11:19:11,184 INFO L226 Difference]: Without dead ends: 59 [2020-10-16 11:19:11,184 INFO L677 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 [2020-10-16 11:19:11,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-16 11:19:11,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-16 11:19:11,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-16 11:19:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-16 11:19:11,190 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-16 11:19:11,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:11,190 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-16 11:19:11,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:11,191 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-16 11:19:11,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:19:11,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:11,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:11,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:19:11,192 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:11,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:11,193 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-10-16 11:19:11,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:11,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048019573] [2020-10-16 11:19:11,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:11,264 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 11:19:11,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048019573] [2020-10-16 11:19:11,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:11,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:19:11,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128683349] [2020-10-16 11:19:11,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:19:11,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:11,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:19:11,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:19:11,266 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-10-16 11:19:11,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:11,304 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-16 11:19:11,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:19:11,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-16 11:19:11,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:11,306 INFO L225 Difference]: With dead ends: 60 [2020-10-16 11:19:11,306 INFO L226 Difference]: Without dead ends: 45 [2020-10-16 11:19:11,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:19:11,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-16 11:19:11,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-16 11:19:11,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-16 11:19:11,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-16 11:19:11,310 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-16 11:19:11,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:11,310 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-16 11:19:11,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:19:11,311 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-16 11:19:11,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:19:11,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:11,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:11,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:19:11,312 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:11,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:11,313 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-10-16 11:19:11,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:11,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165384882] [2020-10-16 11:19:11,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:11,382 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 11:19:11,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165384882] [2020-10-16 11:19:11,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:11,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:19:11,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935522691] [2020-10-16 11:19:11,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:19:11,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:11,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:19:11,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:19:11,385 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-10-16 11:19:11,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:11,432 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-16 11:19:11,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:19:11,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-16 11:19:11,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:11,434 INFO L225 Difference]: With dead ends: 42 [2020-10-16 11:19:11,434 INFO L226 Difference]: Without dead ends: 36 [2020-10-16 11:19:11,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:19:11,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-16 11:19:11,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-16 11:19:11,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-16 11:19:11,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-16 11:19:11,437 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-16 11:19:11,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:11,437 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-16 11:19:11,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:19:11,438 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-16 11:19:11,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:19:11,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:11,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:11,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:19:11,439 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:11,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:11,439 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-10-16 11:19:11,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:11,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053906254] [2020-10-16 11:19:11,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:11,473 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 11:19:11,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053906254] [2020-10-16 11:19:11,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:11,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:19:11,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825879257] [2020-10-16 11:19:11,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:11,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:11,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:11,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:11,476 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-16 11:19:11,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:11,490 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-16 11:19:11,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:19:11,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 11:19:11,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:11,491 INFO L225 Difference]: With dead ends: 35 [2020-10-16 11:19:11,491 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:19:11,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:19:11,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:19:11,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:19:11,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:19:11,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:19:11,493 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 11:19:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:11,493 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:19:11,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:11,493 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:19:11,493 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:19:11,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:19:11,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:19:11 BasicIcfg [2020-10-16 11:19:11,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:19:11,500 INFO L168 Benchmark]: Toolchain (without parser) took 4631.42 ms. Allocated memory was 140.0 MB in the beginning and 245.4 MB in the end (delta: 105.4 MB). Free memory was 101.8 MB in the beginning and 146.2 MB in the end (delta: -44.4 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:11,501 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 11:19:11,502 INFO L168 Benchmark]: CACSL2BoogieTranslator took 764.03 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 161.9 MB in the end (delta: -60.6 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:11,503 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.70 ms. Allocated memory is still 203.9 MB. Free memory was 161.9 MB in the beginning and 159.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:11,504 INFO L168 Benchmark]: Boogie Preprocessor took 26.59 ms. Allocated memory is still 203.9 MB. Free memory was 159.3 MB in the beginning and 158.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:11,505 INFO L168 Benchmark]: RCFGBuilder took 456.48 ms. Allocated memory is still 203.9 MB. Free memory was 158.0 MB in the beginning and 135.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:11,506 INFO L168 Benchmark]: TraceAbstraction took 3329.07 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 134.9 MB in the beginning and 146.2 MB in the end (delta: -11.3 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:11,510 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 764.03 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 161.9 MB in the end (delta: -60.6 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.70 ms. Allocated memory is still 203.9 MB. Free memory was 161.9 MB in the beginning and 159.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.59 ms. Allocated memory is still 203.9 MB. Free memory was 159.3 MB in the beginning and 158.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.48 ms. Allocated memory is still 203.9 MB. Free memory was 158.0 MB in the beginning and 135.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3329.07 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 134.9 MB in the beginning and 146.2 MB in the end (delta: -11.3 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 843 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 61 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 2810 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. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 138 SDtfs, 138 SDslu, 173 SDs, 0 SdLazy, 111 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3141 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...