/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/safe031_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-12 00:07:18,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-12 00:07:18,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-12 00:07:18,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-12 00:07:18,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-12 00:07:19,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-12 00:07:19,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-12 00:07:19,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-12 00:07:19,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-12 00:07:19,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-12 00:07:19,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-12 00:07:19,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-12 00:07:19,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-12 00:07:19,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-12 00:07:19,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-12 00:07:19,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-12 00:07:19,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-12 00:07:19,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-12 00:07:19,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-12 00:07:19,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-12 00:07:19,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-12 00:07:19,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-12 00:07:19,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-12 00:07:19,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-12 00:07:19,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-12 00:07:19,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-12 00:07:19,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-12 00:07:19,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-12 00:07:19,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-12 00:07:19,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-12 00:07:19,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-12 00:07:19,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-12 00:07:19,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-12 00:07:19,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-12 00:07:19,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-12 00:07:19,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-12 00:07:19,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-12 00:07:19,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-12 00:07:19,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-12 00:07:19,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-12 00:07:19,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-12 00:07:19,069 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 [2020-09-12 00:07:19,118 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-12 00:07:19,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-12 00:07:19,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-12 00:07:19,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-12 00:07:19,122 INFO L138 SettingsManager]: * Use SBE=true [2020-09-12 00:07:19,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-12 00:07:19,122 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-12 00:07:19,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-12 00:07:19,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-12 00:07:19,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-12 00:07:19,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-12 00:07:19,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-12 00:07:19,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-12 00:07:19,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-12 00:07:19,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-12 00:07:19,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-12 00:07:19,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-12 00:07:19,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-12 00:07:19,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-12 00:07:19,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-12 00:07:19,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-12 00:07:19,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-12 00:07:19,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-12 00:07:19,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-12 00:07:19,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-12 00:07:19,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-12 00:07:19,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-12 00:07:19,128 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-12 00:07:19,128 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-12 00:07:19,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-12 00:07:19,128 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-12 00:07:19,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-12 00:07:19,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-12 00:07:19,575 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-12 00:07:19,577 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-12 00:07:19,577 INFO L275 PluginConnector]: CDTParser initialized [2020-09-12 00:07:19,579 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2020-09-12 00:07:19,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/561550785/1f2fd530d9644fc9b072f69f19541b8a/FLAGe245e99c0 [2020-09-12 00:07:20,297 INFO L306 CDTParser]: Found 1 translation units. [2020-09-12 00:07:20,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2020-09-12 00:07:20,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/561550785/1f2fd530d9644fc9b072f69f19541b8a/FLAGe245e99c0 [2020-09-12 00:07:20,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/561550785/1f2fd530d9644fc9b072f69f19541b8a [2020-09-12 00:07:20,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-12 00:07:20,602 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-12 00:07:20,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-12 00:07:20,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-12 00:07:20,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-12 00:07:20,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:07:20" (1/1) ... [2020-09-12 00:07:20,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c504f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:20, skipping insertion in model container [2020-09-12 00:07:20,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:07:20" (1/1) ... [2020-09-12 00:07:20,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-12 00:07:20,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-12 00:07:21,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:07:21,229 INFO L203 MainTranslator]: Completed pre-run [2020-09-12 00:07:21,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:07:21,357 INFO L208 MainTranslator]: Completed translation [2020-09-12 00:07:21,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:21 WrapperNode [2020-09-12 00:07:21,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-12 00:07:21,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-12 00:07:21,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-12 00:07:21,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-12 00:07:21,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:21" (1/1) ... [2020-09-12 00:07:21,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:21" (1/1) ... [2020-09-12 00:07:21,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-12 00:07:21,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-12 00:07:21,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-12 00:07:21,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-12 00:07:21,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:21" (1/1) ... [2020-09-12 00:07:21,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:21" (1/1) ... [2020-09-12 00:07:21,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:21" (1/1) ... [2020-09-12 00:07:21,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:21" (1/1) ... [2020-09-12 00:07:21,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:21" (1/1) ... [2020-09-12 00:07:21,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:21" (1/1) ... [2020-09-12 00:07:21,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:21" (1/1) ... [2020-09-12 00:07:21,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-12 00:07:21,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-12 00:07:21,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-12 00:07:21,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-12 00:07:21,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:21" (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 [2020-09-12 00:07:21,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-12 00:07:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-12 00:07:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-12 00:07:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-12 00:07:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-12 00:07:21,537 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-12 00:07:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-12 00:07:21,537 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-12 00:07:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-12 00:07:21,538 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-12 00:07:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-12 00:07:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-12 00:07:21,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-12 00:07:21,541 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-12 00:07:21,962 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-12 00:07:21,962 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-12 00:07:21,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:07:21 BoogieIcfgContainer [2020-09-12 00:07:21,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-12 00:07:21,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-12 00:07:21,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-12 00:07:21,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-12 00:07:21,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 12:07:20" (1/3) ... [2020-09-12 00:07:21,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d41635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:07:21, skipping insertion in model container [2020-09-12 00:07:21,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:21" (2/3) ... [2020-09-12 00:07:21,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d41635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:07:21, skipping insertion in model container [2020-09-12 00:07:21,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:07:21" (3/3) ... [2020-09-12 00:07:21,979 INFO L109 eAbstractionObserver]: Analyzing ICFG safe031_tso.opt.i [2020-09-12 00:07:21,990 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-12 00:07:21,991 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-12 00:07:22,001 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-12 00:07:22,003 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-12 00:07:22,042 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,043 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,043 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,043 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,044 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,044 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,044 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,045 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,045 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,045 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,046 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,046 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,046 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,047 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,047 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,047 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,048 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,048 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,052 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,053 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,053 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,053 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,060 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,060 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,061 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,063 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,064 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,064 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,064 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:22,094 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-12 00:07:22,123 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:07:22,123 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:07:22,123 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:07:22,123 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:07:22,124 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:07:22,124 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:07:22,124 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:07:22,124 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:07:22,143 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-12 00:07:22,146 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-12 00:07:22,195 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-12 00:07:22,196 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:07:22,202 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. [2020-09-12 00:07:22,205 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-12 00:07:22,225 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-12 00:07:22,226 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:07:22,227 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. [2020-09-12 00:07:22,229 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-12 00:07:22,230 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:07:23,731 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2238 [2020-09-12 00:07:23,732 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-09-12 00:07:23,736 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-12 00:07:23,764 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-12 00:07:23,767 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-12 00:07:23,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-12 00:07:23,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:07:23,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:07:23,778 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:07:23,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:07:23,786 INFO L82 PathProgramCache]: Analyzing trace with hash -389059823, now seen corresponding path program 1 times [2020-09-12 00:07:23,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:07:23,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988414199] [2020-09-12 00:07:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:07:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:07:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:07:24,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988414199] [2020-09-12 00:07:24,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:07:24,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-12 00:07:24,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1401889222] [2020-09-12 00:07:24,083 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:07:24,087 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:07:24,105 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-12 00:07:24,105 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:07:24,108 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:07:24,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:07:24,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:07:24,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:07:24,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:07:24,131 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-12 00:07:24,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:07:24,169 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-09-12 00:07:24,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:07:24,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-12 00:07:24,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:07:24,190 INFO L225 Difference]: With dead ends: 290 [2020-09-12 00:07:24,191 INFO L226 Difference]: Without dead ends: 226 [2020-09-12 00:07:24,192 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 [2020-09-12 00:07:24,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-12 00:07:24,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-12 00:07:24,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-12 00:07:24,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-09-12 00:07:24,276 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-09-12 00:07:24,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:07:24,277 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-09-12 00:07:24,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:07:24,277 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-09-12 00:07:24,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-12 00:07:24,279 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:07:24,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:07:24,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-12 00:07:24,280 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:07:24,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:07:24,280 INFO L82 PathProgramCache]: Analyzing trace with hash 824029864, now seen corresponding path program 1 times [2020-09-12 00:07:24,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:07:24,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90963684] [2020-09-12 00:07:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:07:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:07:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:07:24,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90963684] [2020-09-12 00:07:24,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:07:24,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-12 00:07:24,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1426736575] [2020-09-12 00:07:24,363 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:07:24,364 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:07:24,366 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-09-12 00:07:24,366 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:07:24,373 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:07:24,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:07:24,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:07:24,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:07:24,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:07:24,379 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-09-12 00:07:24,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:07:24,391 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-09-12 00:07:24,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:07:24,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-12 00:07:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:07:24,394 INFO L225 Difference]: With dead ends: 220 [2020-09-12 00:07:24,394 INFO L226 Difference]: Without dead ends: 220 [2020-09-12 00:07:24,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:07:24,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-12 00:07:24,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-09-12 00:07:24,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-12 00:07:24,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-09-12 00:07:24,420 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-09-12 00:07:24,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:07:24,421 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-09-12 00:07:24,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:07:24,421 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-09-12 00:07:24,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-12 00:07:24,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:07:24,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:07:24,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-12 00:07:24,423 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:07:24,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:07:24,424 INFO L82 PathProgramCache]: Analyzing trace with hash -224925294, now seen corresponding path program 1 times [2020-09-12 00:07:24,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:07:24,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998302360] [2020-09-12 00:07:24,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:07:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:07:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:07:24,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998302360] [2020-09-12 00:07:24,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:07:24,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:07:24,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [48388522] [2020-09-12 00:07:24,557 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:07:24,558 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:07:24,561 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-09-12 00:07:24,561 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:07:24,612 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:07:24,652 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:07:24,681 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:07:24,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:07:24,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:07:24,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:07:24,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:07:24,682 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 4 states. [2020-09-12 00:07:24,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:07:24,720 INFO L93 Difference]: Finished difference Result 240 states and 599 transitions. [2020-09-12 00:07:24,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:07:24,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-12 00:07:24,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:07:24,723 INFO L225 Difference]: With dead ends: 240 [2020-09-12 00:07:24,723 INFO L226 Difference]: Without dead ends: 176 [2020-09-12 00:07:24,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:07:24,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-09-12 00:07:24,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2020-09-12 00:07:24,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-12 00:07:24,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 428 transitions. [2020-09-12 00:07:24,737 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 428 transitions. Word has length 10 [2020-09-12 00:07:24,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:07:24,737 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 428 transitions. [2020-09-12 00:07:24,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:07:24,738 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 428 transitions. [2020-09-12 00:07:24,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-12 00:07:24,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:07:24,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:07:24,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-12 00:07:24,740 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:07:24,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:07:24,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1617246421, now seen corresponding path program 1 times [2020-09-12 00:07:24,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:07:24,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158747364] [2020-09-12 00:07:24,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:07:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:07:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:07:24,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158747364] [2020-09-12 00:07:24,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:07:24,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:07:24,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [33276391] [2020-09-12 00:07:24,814 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:07:24,815 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:07:24,816 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-09-12 00:07:24,816 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:07:24,817 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:07:24,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:07:24,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:07:24,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:07:24,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:07:24,818 INFO L87 Difference]: Start difference. First operand 176 states and 428 transitions. Second operand 3 states. [2020-09-12 00:07:24,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:07:24,828 INFO L93 Difference]: Finished difference Result 225 states and 522 transitions. [2020-09-12 00:07:24,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:07:24,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-12 00:07:24,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:07:24,830 INFO L225 Difference]: With dead ends: 225 [2020-09-12 00:07:24,830 INFO L226 Difference]: Without dead ends: 183 [2020-09-12 00:07:24,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:07:24,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-12 00:07:24,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2020-09-12 00:07:24,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-12 00:07:24,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 396 transitions. [2020-09-12 00:07:24,843 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 396 transitions. Word has length 11 [2020-09-12 00:07:24,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:07:24,843 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 396 transitions. [2020-09-12 00:07:24,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:07:24,844 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 396 transitions. [2020-09-12 00:07:24,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-12 00:07:24,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:07:24,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:07:24,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-12 00:07:24,846 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:07:24,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:07:24,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1444727206, now seen corresponding path program 1 times [2020-09-12 00:07:24,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:07:24,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512176258] [2020-09-12 00:07:24,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:07:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:07:24,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:07:24,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512176258] [2020-09-12 00:07:24,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:07:24,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:07:24,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1080063407] [2020-09-12 00:07:24,940 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:07:24,941 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:07:24,944 INFO L274 McrAutomatonBuilder]: Finished intersection with 29 states and 44 transitions. [2020-09-12 00:07:24,945 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:07:25,123 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3257#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:07:25,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-12 00:07:25,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:07:25,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-12 00:07:25,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:07:25,124 INFO L87 Difference]: Start difference. First operand 171 states and 396 transitions. Second operand 6 states. [2020-09-12 00:07:25,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:07:25,196 INFO L93 Difference]: Finished difference Result 162 states and 347 transitions. [2020-09-12 00:07:25,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-12 00:07:25,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-12 00:07:25,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:07:25,198 INFO L225 Difference]: With dead ends: 162 [2020-09-12 00:07:25,198 INFO L226 Difference]: Without dead ends: 125 [2020-09-12 00:07:25,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 10 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:07:25,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-12 00:07:25,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-09-12 00:07:25,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-12 00:07:25,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 263 transitions. [2020-09-12 00:07:25,210 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 263 transitions. Word has length 12 [2020-09-12 00:07:25,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:07:25,211 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 263 transitions. [2020-09-12 00:07:25,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-12 00:07:25,211 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 263 transitions. [2020-09-12 00:07:25,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-12 00:07:25,213 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:07:25,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:07:25,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-12 00:07:25,216 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:07:25,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:07:25,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1109140729, now seen corresponding path program 1 times [2020-09-12 00:07:25,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:07:25,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252048984] [2020-09-12 00:07:25,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:07:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:07:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:07:25,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252048984] [2020-09-12 00:07:25,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:07:25,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:07:25,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2053561956] [2020-09-12 00:07:25,299 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:07:25,301 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:07:25,306 INFO L274 McrAutomatonBuilder]: Finished intersection with 39 states and 66 transitions. [2020-09-12 00:07:25,306 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:07:25,395 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:07:25,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:07:25,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:07:25,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:07:25,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:07:25,397 INFO L87 Difference]: Start difference. First operand 125 states and 263 transitions. Second operand 3 states. [2020-09-12 00:07:25,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:07:25,413 INFO L93 Difference]: Finished difference Result 157 states and 314 transitions. [2020-09-12 00:07:25,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:07:25,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-12 00:07:25,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:07:25,415 INFO L225 Difference]: With dead ends: 157 [2020-09-12 00:07:25,415 INFO L226 Difference]: Without dead ends: 120 [2020-09-12 00:07:25,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:07:25,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-12 00:07:25,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-09-12 00:07:25,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-12 00:07:25,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 233 transitions. [2020-09-12 00:07:25,424 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 233 transitions. Word has length 14 [2020-09-12 00:07:25,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:07:25,428 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 233 transitions. [2020-09-12 00:07:25,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:07:25,428 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 233 transitions. [2020-09-12 00:07:25,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-12 00:07:25,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:07:25,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:07:25,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-12 00:07:25,433 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:07:25,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:07:25,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1574578981, now seen corresponding path program 1 times [2020-09-12 00:07:25,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:07:25,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240105787] [2020-09-12 00:07:25,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:07:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:07:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:07:25,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240105787] [2020-09-12 00:07:25,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:07:25,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:07:25,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2049279918] [2020-09-12 00:07:25,546 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:07:25,548 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:07:25,551 INFO L274 McrAutomatonBuilder]: Finished intersection with 29 states and 40 transitions. [2020-09-12 00:07:25,551 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:07:25,563 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4074#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:07:25,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-12 00:07:25,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:07:25,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-12 00:07:25,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:07:25,565 INFO L87 Difference]: Start difference. First operand 118 states and 233 transitions. Second operand 7 states. [2020-09-12 00:07:25,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:07:25,623 INFO L93 Difference]: Finished difference Result 112 states and 219 transitions. [2020-09-12 00:07:25,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-12 00:07:25,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-12 00:07:25,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:07:25,624 INFO L225 Difference]: With dead ends: 112 [2020-09-12 00:07:25,624 INFO L226 Difference]: Without dead ends: 36 [2020-09-12 00:07:25,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:07:25,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-12 00:07:25,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-12 00:07:25,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-12 00:07:25,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-12 00:07:25,627 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 14 [2020-09-12 00:07:25,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:07:25,628 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-12 00:07:25,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-12 00:07:25,628 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-12 00:07:25,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-12 00:07:25,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:07:25,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:07:25,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-12 00:07:25,630 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:07:25,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:07:25,630 INFO L82 PathProgramCache]: Analyzing trace with hash 16794271, now seen corresponding path program 1 times [2020-09-12 00:07:25,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:07:25,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366615405] [2020-09-12 00:07:25,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:07:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:07:25,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:07:25,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366615405] [2020-09-12 00:07:25,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:07:25,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:07:25,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [403074188] [2020-09-12 00:07:25,687 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:07:25,689 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:07:25,699 INFO L274 McrAutomatonBuilder]: Finished intersection with 67 states and 122 transitions. [2020-09-12 00:07:25,699 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:07:25,742 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:07:25,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:07:25,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:07:25,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:07:25,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:07:25,743 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-09-12 00:07:25,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:07:25,755 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-12 00:07:25,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:07:25,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-12 00:07:25,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:07:25,756 INFO L225 Difference]: With dead ends: 35 [2020-09-12 00:07:25,756 INFO L226 Difference]: Without dead ends: 0 [2020-09-12 00:07:25,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:07:25,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-12 00:07:25,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-12 00:07:25,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-12 00:07:25,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-12 00:07:25,757 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-12 00:07:25,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:07:25,757 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-12 00:07:25,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:07:25,757 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-12 00:07:25,758 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-12 00:07:25,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-12 00:07:25,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 12:07:25 BasicIcfg [2020-09-12 00:07:25,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-12 00:07:25,767 INFO L168 Benchmark]: Toolchain (without parser) took 5168.02 ms. Allocated memory was 147.8 MB in the beginning and 246.9 MB in the end (delta: 99.1 MB). Free memory was 102.7 MB in the beginning and 128.1 MB in the end (delta: -25.4 MB). Peak memory consumption was 73.7 MB. Max. memory is 7.1 GB. [2020-09-12 00:07:25,768 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-12 00:07:25,769 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.34 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.3 MB in the beginning and 161.8 MB in the end (delta: -59.6 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-09-12 00:07:25,769 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.90 ms. Allocated memory is still 204.5 MB. Free memory was 161.8 MB in the beginning and 159.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-12 00:07:25,770 INFO L168 Benchmark]: Boogie Preprocessor took 32.85 ms. Allocated memory is still 204.5 MB. Free memory was 159.9 MB in the beginning and 158.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-12 00:07:25,771 INFO L168 Benchmark]: RCFGBuilder took 516.98 ms. Allocated memory is still 204.5 MB. Free memory was 158.6 MB in the beginning and 136.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-12 00:07:25,772 INFO L168 Benchmark]: TraceAbstraction took 3793.16 ms. Allocated memory was 204.5 MB in the beginning and 246.9 MB in the end (delta: 42.5 MB). Free memory was 136.0 MB in the beginning and 128.1 MB in the end (delta: 7.9 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. [2020-09-12 00:07:25,776 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 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 755.34 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.3 MB in the beginning and 161.8 MB in the end (delta: -59.6 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.90 ms. Allocated memory is still 204.5 MB. Free memory was 161.8 MB in the beginning and 159.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.85 ms. Allocated memory is still 204.5 MB. Free memory was 159.9 MB in the beginning and 158.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 516.98 ms. Allocated memory is still 204.5 MB. Free memory was 158.6 MB in the beginning and 136.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3793.16 ms. Allocated memory was 204.5 MB in the beginning and 246.9 MB in the end (delta: 42.5 MB). Free memory was 136.0 MB in the beginning and 128.1 MB in the end (delta: 7.9 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 635 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2238 CheckedPairsTotal, 55 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 157 SDtfs, 105 SDslu, 204 SDs, 0 SdLazy, 104 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 167 SyntacticMatches, 12 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 2531 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...