/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/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:43:07,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:43:07,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:43:07,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:43:07,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:43:07,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:43:07,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:43:07,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:43:07,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:43:07,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:43:07,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:43:07,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:43:07,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:43:07,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:43:07,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:43:07,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:43:07,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:43:07,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:43:07,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:43:07,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:43:07,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:43:07,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:43:07,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:43:07,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:43:07,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 23:43:07,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 23:43:07,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 23:43:07,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 23:43:07,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 23:43:07,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 23:43:07,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:43:07,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:43:07,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:43:07,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:43:07,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:43:07,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:43:07,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:43:07,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:43:07,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:43:07,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:43:07,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:43:07,363 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 [2020-09-11 23:43:07,407 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:43:07,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:43:07,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:43:07,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:43:07,410 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:43:07,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:43:07,411 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:43:07,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:43:07,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:43:07,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:43:07,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:43:07,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:43:07,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:43:07,413 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:43:07,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:43:07,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:43:07,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:43:07,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:43:07,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:43:07,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:43:07,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:43:07,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:43:07,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:43:07,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:43:07,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:43:07,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:43:07,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:43:07,416 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:43:07,416 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:43:07,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:43:07,417 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:43:07,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:43:07,865 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:43:07,869 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:43:07,871 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:43:07,871 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:43:07,873 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-09-11 23:43:07,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0835af483/5ebeab04a7b641cf8829a9806d3d174c/FLAG8611d5672 [2020-09-11 23:43:08,616 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:43:08,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-09-11 23:43:08,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0835af483/5ebeab04a7b641cf8829a9806d3d174c/FLAG8611d5672 [2020-09-11 23:43:08,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0835af483/5ebeab04a7b641cf8829a9806d3d174c [2020-09-11 23:43:08,821 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:43:08,826 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:43:08,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:43:08,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:43:08,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:43:08,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:43:08" (1/1) ... [2020-09-11 23:43:08,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e29f38f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:08, skipping insertion in model container [2020-09-11 23:43:08,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:43:08" (1/1) ... [2020-09-11 23:43:08,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:43:08,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:43:09,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:43:09,453 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:43:09,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:43:09,601 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:43:09,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:09 WrapperNode [2020-09-11 23:43:09,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:43:09,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:43:09,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:43:09,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:43:09,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:09" (1/1) ... [2020-09-11 23:43:09,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:09" (1/1) ... [2020-09-11 23:43:09,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:43:09,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:43:09,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:43:09,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:43:09,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:09" (1/1) ... [2020-09-11 23:43:09,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:09" (1/1) ... [2020-09-11 23:43:09,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:09" (1/1) ... [2020-09-11 23:43:09,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:09" (1/1) ... [2020-09-11 23:43:09,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:09" (1/1) ... [2020-09-11 23:43:09,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:09" (1/1) ... [2020-09-11 23:43:09,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:09" (1/1) ... [2020-09-11 23:43:09,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:43:09,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:43:09,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:43:09,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:43:09,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:09" (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 [2020-09-11 23:43:09,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:43:09,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:43:09,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:43:09,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:43:09,776 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:43:09,776 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:43:09,776 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:43:09,777 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:43:09,777 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:43:09,777 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:43:09,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:43:09,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:43:09,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:43:09,780 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 23:43:10,177 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:43:10,177 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:43:10,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:43:10 BoogieIcfgContainer [2020-09-11 23:43:10,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:43:10,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:43:10,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:43:10,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:43:10,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:43:08" (1/3) ... [2020-09-11 23:43:10,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4eefda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:43:10, skipping insertion in model container [2020-09-11 23:43:10,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:09" (2/3) ... [2020-09-11 23:43:10,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4eefda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:43:10, skipping insertion in model container [2020-09-11 23:43:10,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:43:10" (3/3) ... [2020-09-11 23:43:10,193 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-09-11 23:43:10,204 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:43:10,205 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:43:10,214 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:43:10,215 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:43:10,252 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,253 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,253 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,253 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,254 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,254 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,255 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,255 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,256 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,256 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,257 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,257 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,258 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,258 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,259 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,259 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,260 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,260 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,268 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,268 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,269 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,269 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,280 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,280 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,280 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,280 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,282 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,283 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,283 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,283 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:43:10,311 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 23:43:10,337 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:43:10,338 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:43:10,338 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:43:10,338 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:43:10,338 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:43:10,339 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:43:10,339 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:43:10,339 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:43:10,358 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-11 23:43:10,360 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-11 23:43:10,408 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-11 23:43:10,409 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:43:10,415 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 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. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:43:10,418 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-11 23:43:10,454 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-11 23:43:10,456 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:43:10,457 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 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. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:43:10,459 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 23:43:10,462 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:43:11,985 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2826 [2020-09-11 23:43:11,986 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-11 23:43:11,996 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 23:43:12,034 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 23:43:12,036 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 23:43:12,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 23:43:12,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:43:12,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:43:12,048 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:43:12,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:43:12,055 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-09-11 23:43:12,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:43:12,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586577919] [2020-09-11 23:43:12,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:43:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:43:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:43:12,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586577919] [2020-09-11 23:43:12,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:43:12,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:43:12,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1547219994] [2020-09-11 23:43:12,319 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:43:12,323 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:43:12,341 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 23:43:12,341 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:43:12,344 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:43:12,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:43:12,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:43:12,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:43:12,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:43:12,367 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 23:43:12,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:43:12,422 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-11 23:43:12,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:43:12,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 23:43:12,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:43:12,444 INFO L225 Difference]: With dead ends: 282 [2020-09-11 23:43:12,445 INFO L226 Difference]: Without dead ends: 218 [2020-09-11 23:43:12,447 INFO L675 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 [2020-09-11 23:43:12,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-11 23:43:12,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-11 23:43:12,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-11 23:43:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-11 23:43:12,531 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-11 23:43:12,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:43:12,533 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-11 23:43:12,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:43:12,533 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-11 23:43:12,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 23:43:12,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:43:12,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:43:12,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:43:12,535 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:43:12,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:43:12,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1372085576, now seen corresponding path program 1 times [2020-09-11 23:43:12,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:43:12,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925290074] [2020-09-11 23:43:12,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:43:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:43:12,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:43:12,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925290074] [2020-09-11 23:43:12,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:43:12,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:43:12,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [643164118] [2020-09-11 23:43:12,615 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:43:12,616 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:43:12,619 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-09-11 23:43:12,619 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:43:12,650 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:43:12,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:43:12,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:43:12,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:43:12,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:43:12,654 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-09-11 23:43:12,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:43:12,683 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-11 23:43:12,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:43:12,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-11 23:43:12,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:43:12,690 INFO L225 Difference]: With dead ends: 202 [2020-09-11 23:43:12,690 INFO L226 Difference]: Without dead ends: 202 [2020-09-11 23:43:12,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:43:12,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-11 23:43:12,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-11 23:43:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-11 23:43:12,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-11 23:43:12,711 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-11 23:43:12,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:43:12,712 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-11 23:43:12,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:43:12,712 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-11 23:43:12,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 23:43:12,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:43:12,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:43:12,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:43:12,714 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:43:12,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:43:12,714 INFO L82 PathProgramCache]: Analyzing trace with hash 365373016, now seen corresponding path program 1 times [2020-09-11 23:43:12,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:43:12,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672458959] [2020-09-11 23:43:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:43:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:43:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:43:12,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672458959] [2020-09-11 23:43:12,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:43:12,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:43:12,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1144747387] [2020-09-11 23:43:12,817 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:43:12,818 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:43:12,820 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-09-11 23:43:12,820 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:43:12,861 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:43:12,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:43:12,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:43:12,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:43:12,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:43:12,863 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-11 23:43:12,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:43:12,876 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-09-11 23:43:12,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:43:12,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-11 23:43:12,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:43:12,882 INFO L225 Difference]: With dead ends: 198 [2020-09-11 23:43:12,882 INFO L226 Difference]: Without dead ends: 198 [2020-09-11 23:43:12,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:43:12,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-09-11 23:43:12,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-09-11 23:43:12,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-11 23:43:12,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-09-11 23:43:12,900 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 10 [2020-09-11 23:43:12,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:43:12,900 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-09-11 23:43:12,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:43:12,901 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-09-11 23:43:12,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 23:43:12,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:43:12,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:43:12,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:43:12,903 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:43:12,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:43:12,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1571968161, now seen corresponding path program 1 times [2020-09-11 23:43:12,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:43:12,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934124600] [2020-09-11 23:43:12,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:43:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:43:12,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:43:12,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934124600] [2020-09-11 23:43:12,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:43:12,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:43:12,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1742745638] [2020-09-11 23:43:12,993 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:43:12,994 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:43:12,997 INFO L274 McrAutomatonBuilder]: Finished intersection with 31 states and 55 transitions. [2020-09-11 23:43:12,997 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:43:13,120 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:43:13,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:43:13,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:43:13,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:43:13,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:43:13,122 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 3 states. [2020-09-11 23:43:13,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:43:13,128 INFO L93 Difference]: Finished difference Result 192 states and 511 transitions. [2020-09-11 23:43:13,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:43:13,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-11 23:43:13,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:43:13,130 INFO L225 Difference]: With dead ends: 192 [2020-09-11 23:43:13,131 INFO L226 Difference]: Without dead ends: 192 [2020-09-11 23:43:13,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:43:13,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-09-11 23:43:13,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-09-11 23:43:13,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-09-11 23:43:13,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 511 transitions. [2020-09-11 23:43:13,145 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 511 transitions. Word has length 11 [2020-09-11 23:43:13,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:43:13,146 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 511 transitions. [2020-09-11 23:43:13,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:43:13,146 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 511 transitions. [2020-09-11 23:43:13,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 23:43:13,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:43:13,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:43:13,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:43:13,149 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:43:13,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:43:13,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-09-11 23:43:13,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:43:13,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069407546] [2020-09-11 23:43:13,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:43:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:43:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:43:13,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069407546] [2020-09-11 23:43:13,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:43:13,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:43:13,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [415509206] [2020-09-11 23:43:13,225 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:43:13,226 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:43:13,230 INFO L274 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-09-11 23:43:13,230 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:43:13,256 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:43:13,283 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:43:13,311 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:43:13,379 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:43:13,399 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:43:13,417 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:43:13,439 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:43:13,485 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:43:13,501 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3186#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-11 23:43:13,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:43:13,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:43:13,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:43:13,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:43:13,502 INFO L87 Difference]: Start difference. First operand 192 states and 511 transitions. Second operand 5 states. [2020-09-11 23:43:13,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:43:13,565 INFO L93 Difference]: Finished difference Result 187 states and 470 transitions. [2020-09-11 23:43:13,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:43:13,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-11 23:43:13,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:43:13,568 INFO L225 Difference]: With dead ends: 187 [2020-09-11 23:43:13,568 INFO L226 Difference]: Without dead ends: 123 [2020-09-11 23:43:13,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:43:13,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-11 23:43:13,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-09-11 23:43:13,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-11 23:43:13,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-09-11 23:43:13,574 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-09-11 23:43:13,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:43:13,575 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-09-11 23:43:13,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:43:13,575 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-09-11 23:43:13,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:43:13,577 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:43:13,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:43:13,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:43:13,577 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:43:13,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:43:13,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1920279248, now seen corresponding path program 1 times [2020-09-11 23:43:13,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:43:13,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444467831] [2020-09-11 23:43:13,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:43:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:43:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:43:13,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444467831] [2020-09-11 23:43:13,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:43:13,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:43:13,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1136653208] [2020-09-11 23:43:13,638 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:43:13,639 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:43:13,641 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-09-11 23:43:13,641 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:43:13,644 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:43:13,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:43:13,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:43:13,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:43:13,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:43:13,645 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 3 states. [2020-09-11 23:43:13,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:43:13,655 INFO L93 Difference]: Finished difference Result 155 states and 330 transitions. [2020-09-11 23:43:13,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:43:13,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-11 23:43:13,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:43:13,656 INFO L225 Difference]: With dead ends: 155 [2020-09-11 23:43:13,657 INFO L226 Difference]: Without dead ends: 124 [2020-09-11 23:43:13,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:43:13,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-11 23:43:13,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-09-11 23:43:13,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-11 23:43:13,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 257 transitions. [2020-09-11 23:43:13,662 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 257 transitions. Word has length 14 [2020-09-11 23:43:13,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:43:13,662 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 257 transitions. [2020-09-11 23:43:13,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:43:13,662 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 257 transitions. [2020-09-11 23:43:13,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:43:13,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:43:13,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:43:13,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 23:43:13,665 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:43:13,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:43:13,665 INFO L82 PathProgramCache]: Analyzing trace with hash 451653261, now seen corresponding path program 1 times [2020-09-11 23:43:13,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:43:13,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933637132] [2020-09-11 23:43:13,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:43:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:43:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:43:13,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933637132] [2020-09-11 23:43:13,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:43:13,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:43:13,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [277760244] [2020-09-11 23:43:13,727 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:43:13,729 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:43:13,735 INFO L274 McrAutomatonBuilder]: Finished intersection with 49 states and 91 transitions. [2020-09-11 23:43:13,735 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:43:13,922 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:43:13,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:43:13,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:43:13,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:43:13,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:43:13,923 INFO L87 Difference]: Start difference. First operand 122 states and 257 transitions. Second operand 4 states. [2020-09-11 23:43:13,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:43:13,955 INFO L93 Difference]: Finished difference Result 154 states and 308 transitions. [2020-09-11 23:43:13,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:43:13,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-11 23:43:13,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:43:13,957 INFO L225 Difference]: With dead ends: 154 [2020-09-11 23:43:13,957 INFO L226 Difference]: Without dead ends: 116 [2020-09-11 23:43:13,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:43:13,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-11 23:43:13,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-09-11 23:43:13,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-11 23:43:13,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 222 transitions. [2020-09-11 23:43:13,964 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 222 transitions. Word has length 15 [2020-09-11 23:43:13,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:43:13,965 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 222 transitions. [2020-09-11 23:43:13,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:43:13,965 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 222 transitions. [2020-09-11 23:43:13,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:43:13,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:43:13,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:43:13,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 23:43:13,968 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:43:13,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:43:13,968 INFO L82 PathProgramCache]: Analyzing trace with hash -600886075, now seen corresponding path program 1 times [2020-09-11 23:43:13,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:43:13,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178130466] [2020-09-11 23:43:13,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:43:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:43:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:43:14,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178130466] [2020-09-11 23:43:14,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:43:14,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:43:14,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1006545201] [2020-09-11 23:43:14,040 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:43:14,041 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:43:14,046 INFO L274 McrAutomatonBuilder]: Finished intersection with 43 states and 75 transitions. [2020-09-11 23:43:14,046 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:43:14,052 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:43:14,154 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [4421#(not (= 3 ~__unbuffered_cnt~0)), 4422#(not (= ~__unbuffered_cnt~0 2)), 4423#(not (= ~__unbuffered_cnt~0 1)), 4424#(<= ~__unbuffered_cnt~0 0)] [2020-09-11 23:43:14,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-11 23:43:14,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:43:14,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-11 23:43:14,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-11 23:43:14,155 INFO L87 Difference]: Start difference. First operand 114 states and 222 transitions. Second operand 10 states. [2020-09-11 23:43:14,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:43:14,242 INFO L93 Difference]: Finished difference Result 110 states and 212 transitions. [2020-09-11 23:43:14,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:43:14,243 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-09-11 23:43:14,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:43:14,243 INFO L225 Difference]: With dead ends: 110 [2020-09-11 23:43:14,244 INFO L226 Difference]: Without dead ends: 38 [2020-09-11 23:43:14,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-11 23:43:14,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-11 23:43:14,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-11 23:43:14,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-11 23:43:14,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-09-11 23:43:14,247 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 15 [2020-09-11 23:43:14,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:43:14,247 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-09-11 23:43:14,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-11 23:43:14,248 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-09-11 23:43:14,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:43:14,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:43:14,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:43:14,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 23:43:14,249 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:43:14,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:43:14,249 INFO L82 PathProgramCache]: Analyzing trace with hash 13395029, now seen corresponding path program 1 times [2020-09-11 23:43:14,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:43:14,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900329086] [2020-09-11 23:43:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:43:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:43:14,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:43:14,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900329086] [2020-09-11 23:43:14,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:43:14,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:43:14,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [658221782] [2020-09-11 23:43:14,312 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:43:14,314 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:43:14,320 INFO L274 McrAutomatonBuilder]: Finished intersection with 37 states and 54 transitions. [2020-09-11 23:43:14,321 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:43:14,332 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:43:14,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:43:14,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:43:14,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:43:14,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:43:14,334 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-09-11 23:43:14,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:43:14,357 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-09-11 23:43:14,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:43:14,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:43:14,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:43:14,359 INFO L225 Difference]: With dead ends: 56 [2020-09-11 23:43:14,359 INFO L226 Difference]: Without dead ends: 35 [2020-09-11 23:43:14,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:43:14,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-11 23:43:14,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-11 23:43:14,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-11 23:43:14,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-09-11 23:43:14,362 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-09-11 23:43:14,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:43:14,363 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-09-11 23:43:14,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:43:14,363 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-09-11 23:43:14,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:43:14,364 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:43:14,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:43:14,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 23:43:14,365 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:43:14,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:43:14,365 INFO L82 PathProgramCache]: Analyzing trace with hash 265740449, now seen corresponding path program 2 times [2020-09-11 23:43:14,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:43:14,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821154694] [2020-09-11 23:43:14,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:43:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:43:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:43:14,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821154694] [2020-09-11 23:43:14,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:43:14,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:43:14,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [304699214] [2020-09-11 23:43:14,433 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:43:14,436 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:43:14,443 INFO L274 McrAutomatonBuilder]: Finished intersection with 34 states and 47 transitions. [2020-09-11 23:43:14,443 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:43:14,470 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:43:14,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:43:14,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:43:14,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:43:14,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:43:14,472 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-09-11 23:43:14,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:43:14,490 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-09-11 23:43:14,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:43:14,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:43:14,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:43:14,491 INFO L225 Difference]: With dead ends: 34 [2020-09-11 23:43:14,491 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:43:14,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:43:14,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:43:14,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:43:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:43:14,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:43:14,497 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 23:43:14,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:43:14,497 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:43:14,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:43:14,498 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:43:14,498 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:43:14,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 23:43:14,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:43:14 BasicIcfg [2020-09-11 23:43:14,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:43:14,516 INFO L168 Benchmark]: Toolchain (without parser) took 5689.54 ms. Allocated memory was 146.8 MB in the beginning and 282.1 MB in the end (delta: 135.3 MB). Free memory was 101.8 MB in the beginning and 198.6 MB in the end (delta: -96.8 MB). Peak memory consumption was 38.5 MB. Max. memory is 7.1 GB. [2020-09-11 23:43:14,517 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-11 23:43:14,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.84 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 101.2 MB in the beginning and 162.0 MB in the end (delta: -60.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-11 23:43:14,524 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.53 ms. Allocated memory is still 204.5 MB. Free memory was 162.0 MB in the beginning and 160.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:43:14,525 INFO L168 Benchmark]: Boogie Preprocessor took 29.11 ms. Allocated memory is still 204.5 MB. Free memory was 160.0 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 23:43:14,527 INFO L168 Benchmark]: RCFGBuilder took 493.68 ms. Allocated memory is still 204.5 MB. Free memory was 158.7 MB in the beginning and 136.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-11 23:43:14,531 INFO L168 Benchmark]: TraceAbstraction took 4326.39 ms. Allocated memory was 204.5 MB in the beginning and 282.1 MB in the end (delta: 77.6 MB). Free memory was 136.0 MB in the beginning and 198.6 MB in the end (delta: -62.6 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:43:14,544 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 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 774.84 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 101.2 MB in the beginning and 162.0 MB in the end (delta: -60.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.53 ms. Allocated memory is still 204.5 MB. Free memory was 162.0 MB in the beginning and 160.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.11 ms. Allocated memory is still 204.5 MB. Free memory was 160.0 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 493.68 ms. Allocated memory is still 204.5 MB. Free memory was 158.7 MB in the beginning and 136.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4326.39 ms. Allocated memory was 204.5 MB in the beginning and 282.1 MB in the end (delta: 77.6 MB). Free memory was 136.0 MB in the beginning and 198.6 MB in the end (delta: -62.6 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 655 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2826 CheckedPairsTotal, 58 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 196 SDtfs, 125 SDslu, 232 SDs, 0 SdLazy, 133 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 296 GetRequests, 262 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 3872 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...