/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/safe025_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:57:34,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:57:34,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:57:34,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:57:34,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:57:34,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:57:34,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:57:34,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:57:34,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:57:34,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:57:34,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:57:34,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:57:34,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:57:34,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:57:34,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:57:34,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:57:34,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:57:34,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:57:34,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:57:34,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:57:34,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:57:34,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:57:34,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:57:34,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:57:34,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 23:57:34,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 23:57:34,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 23:57:34,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 23:57:34,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 23:57:34,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 23:57:34,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:57:34,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:57:34,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:57:34,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:57:34,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:57:34,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:57:34,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:57:34,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:57:34,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:57:34,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:57:34,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:57:34,159 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 23:57:34,212 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:57:34,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:57:34,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:57:34,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:57:34,215 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:57:34,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:57:34,216 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:57:34,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:57:34,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:57:34,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:57:34,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:57:34,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:57:34,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:57:34,219 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:57:34,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:57:34,219 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:57:34,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:57:34,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:57:34,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:57:34,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:57:34,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:57:34,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:57:34,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:57:34,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:57:34,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:57:34,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:57:34,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:57:34,222 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:57:34,222 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:57:34,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:57:34,222 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:57:34,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:57:34,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:57:34,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:57:34,700 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:57:34,701 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:57:34,703 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2020-09-11 23:57:34,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba393d4e3/be193da9f2e446948a9d1c90ae593988/FLAG15e899535 [2020-09-11 23:57:35,427 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:57:35,428 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2020-09-11 23:57:35,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba393d4e3/be193da9f2e446948a9d1c90ae593988/FLAG15e899535 [2020-09-11 23:57:35,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba393d4e3/be193da9f2e446948a9d1c90ae593988 [2020-09-11 23:57:35,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:57:35,676 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:57:35,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:57:35,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:57:35,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:57:35,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:57:35" (1/1) ... [2020-09-11 23:57:35,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e1711e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:35, skipping insertion in model container [2020-09-11 23:57:35,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:57:35" (1/1) ... [2020-09-11 23:57:35,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:57:35,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:57:36,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:57:36,306 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:57:36,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:57:36,442 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:57:36,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:36 WrapperNode [2020-09-11 23:57:36,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:57:36,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:57:36,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:57:36,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:57:36,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:36" (1/1) ... [2020-09-11 23:57:36,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:36" (1/1) ... [2020-09-11 23:57:36,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:57:36,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:57:36,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:57:36,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:57:36,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:36" (1/1) ... [2020-09-11 23:57:36,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:36" (1/1) ... [2020-09-11 23:57:36,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:36" (1/1) ... [2020-09-11 23:57:36,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:36" (1/1) ... [2020-09-11 23:57:36,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:36" (1/1) ... [2020-09-11 23:57:36,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:36" (1/1) ... [2020-09-11 23:57:36,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:36" (1/1) ... [2020-09-11 23:57:36,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:57:36,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:57:36,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:57:36,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:57:36,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:36" (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 23:57:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:57:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:57:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:57:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:57:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:57:36,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:57:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:57:36,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:57:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:57:36,629 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:57:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:57:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:57:36,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:57:36,632 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 23:57:37,061 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:57:37,062 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:57:37,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:57:37 BoogieIcfgContainer [2020-09-11 23:57:37,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:57:37,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:57:37,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:57:37,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:57:37,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:57:35" (1/3) ... [2020-09-11 23:57:37,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1de9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:57:37, skipping insertion in model container [2020-09-11 23:57:37,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:36" (2/3) ... [2020-09-11 23:57:37,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1de9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:57:37, skipping insertion in model container [2020-09-11 23:57:37,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:57:37" (3/3) ... [2020-09-11 23:57:37,078 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_pso.opt.i [2020-09-11 23:57:37,088 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:57:37,088 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:57:37,098 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:57:37,099 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:57:37,128 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,128 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,128 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,131 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,133 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,133 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,134 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,134 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,134 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,134 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,135 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,135 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,135 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,137 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,137 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,137 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,139 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,139 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,146 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,147 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,147 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,148 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,154 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,154 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,154 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,154 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,157 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,158 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,158 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,158 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:37,184 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 23:57:37,217 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:57:37,218 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:57:37,218 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:57:37,218 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:57:37,218 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:57:37,218 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:57:37,219 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:57:37,219 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:57:37,242 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-11 23:57:37,245 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:57:37,302 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:57:37,303 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:57:37,309 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:57:37,312 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:57:37,333 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:57:37,333 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:57:37,339 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:57:37,341 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 23:57:37,345 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:57:38,887 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-09-11 23:57:38,887 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-11 23:57:38,892 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 23:57:38,921 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 23:57:38,924 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 23:57:38,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 23:57:38,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:57:38,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:57:38,936 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:57:38,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:57:38,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-09-11 23:57:38,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:57:38,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089719332] [2020-09-11 23:57:38,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:57:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:57:39,248 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 23:57:39,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089719332] [2020-09-11 23:57:39,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:57:39,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:57:39,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1924678953] [2020-09-11 23:57:39,252 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:57:39,256 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:57:39,274 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 23:57:39,275 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:57:39,277 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:57:39,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:57:39,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:57:39,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:57:39,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:57:39,301 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 23:57:39,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:57:39,347 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-11 23:57:39,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:57:39,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 23:57:39,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:57:39,373 INFO L225 Difference]: With dead ends: 282 [2020-09-11 23:57:39,373 INFO L226 Difference]: Without dead ends: 218 [2020-09-11 23:57:39,375 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 23:57:39,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-11 23:57:39,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-11 23:57:39,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-11 23:57:39,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-11 23:57:39,449 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-11 23:57:39,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:57:39,450 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-11 23:57:39,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:57:39,451 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-11 23:57:39,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 23:57:39,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:57:39,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:57:39,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:57:39,456 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:57:39,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:57:39,456 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-09-11 23:57:39,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:57:39,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406423856] [2020-09-11 23:57:39,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:57:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:57:39,598 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 23:57:39,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406423856] [2020-09-11 23:57:39,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:57:39,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:57:39,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [269677053] [2020-09-11 23:57:39,600 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:57:39,601 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:57:39,603 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-09-11 23:57:39,603 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:57:39,636 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:57:39,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:57:39,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:57:39,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:57:39,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:57:39,639 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-09-11 23:57:39,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:57:39,660 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-11 23:57:39,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:57:39,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-11 23:57:39,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:57:39,663 INFO L225 Difference]: With dead ends: 202 [2020-09-11 23:57:39,663 INFO L226 Difference]: Without dead ends: 202 [2020-09-11 23:57:39,664 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 23:57:39,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-11 23:57:39,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-11 23:57:39,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-11 23:57:39,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-11 23:57:39,683 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-11 23:57:39,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:57:39,683 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-11 23:57:39,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:57:39,683 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-11 23:57:39,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 23:57:39,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:57:39,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:57:39,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:57:39,686 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:57:39,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:57:39,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-09-11 23:57:39,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:57:39,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266992761] [2020-09-11 23:57:39,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:57:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:57:39,766 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 23:57:39,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266992761] [2020-09-11 23:57:39,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:57:39,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:57:39,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1960844310] [2020-09-11 23:57:39,767 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:57:39,770 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:57:39,772 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-09-11 23:57:39,772 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:57:39,835 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:57:39,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:57:39,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:57:39,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:57:39,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:57:39,836 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-11 23:57:39,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:57:39,842 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-09-11 23:57:39,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:57:39,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-11 23:57:39,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:57:39,845 INFO L225 Difference]: With dead ends: 194 [2020-09-11 23:57:39,846 INFO L226 Difference]: Without dead ends: 194 [2020-09-11 23:57:39,846 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 23:57:39,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-11 23:57:39,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-09-11 23:57:39,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-11 23:57:39,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-09-11 23:57:39,862 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-09-11 23:57:39,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:57:39,862 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-09-11 23:57:39,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:57:39,862 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-09-11 23:57:39,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 23:57:39,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:57:39,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:57:39,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:57:39,865 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:57:39,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:57:39,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-09-11 23:57:39,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:57:39,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101245424] [2020-09-11 23:57:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:57:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:57:39,950 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 23:57:39,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101245424] [2020-09-11 23:57:39,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:57:39,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:57:39,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1939283297] [2020-09-11 23:57:39,952 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:57:39,955 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:57:39,957 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-09-11 23:57:39,957 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:57:40,007 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:57:40,038 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:57:40,064 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:57:40,086 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:57:40,102 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:57:40,108 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2596#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-11 23:57:40,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:57:40,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:57:40,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:57:40,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:57:40,109 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 5 states. [2020-09-11 23:57:40,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:57:40,170 INFO L93 Difference]: Finished difference Result 187 states and 470 transitions. [2020-09-11 23:57:40,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:57:40,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-11 23:57:40,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:57:40,172 INFO L225 Difference]: With dead ends: 187 [2020-09-11 23:57:40,173 INFO L226 Difference]: Without dead ends: 123 [2020-09-11 23:57:40,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:57:40,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-11 23:57:40,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-09-11 23:57:40,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-11 23:57:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-09-11 23:57:40,202 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 11 [2020-09-11 23:57:40,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:57:40,202 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-09-11 23:57:40,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:57:40,202 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-09-11 23:57:40,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:57:40,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:57:40,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:57:40,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:57:40,208 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:57:40,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:57:40,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-09-11 23:57:40,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:57:40,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460350542] [2020-09-11 23:57:40,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:57:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:57:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:57:40,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460350542] [2020-09-11 23:57:40,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:57:40,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:57:40,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [530011045] [2020-09-11 23:57:40,333 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:57:40,334 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:57:40,337 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-09-11 23:57:40,337 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:57:40,382 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:57:40,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 23:57:40,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:57:40,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 23:57:40,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 23:57:40,383 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-09-11 23:57:40,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:57:40,439 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-09-11 23:57:40,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:57:40,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-11 23:57:40,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:57:40,440 INFO L225 Difference]: With dead ends: 118 [2020-09-11 23:57:40,441 INFO L226 Difference]: Without dead ends: 108 [2020-09-11 23:57:40,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:57:40,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-11 23:57:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-09-11 23:57:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-11 23:57:40,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-09-11 23:57:40,447 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-09-11 23:57:40,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:57:40,448 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-09-11 23:57:40,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 23:57:40,448 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-09-11 23:57:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:57:40,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:57:40,450 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 23:57:40,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:57:40,450 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:57:40,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:57:40,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-09-11 23:57:40,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:57:40,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070629208] [2020-09-11 23:57:40,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:57:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:57:40,514 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 23:57:40,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070629208] [2020-09-11 23:57:40,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:57:40,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:57:40,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [282337803] [2020-09-11 23:57:40,515 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:57:40,517 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:57:40,523 INFO L274 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-09-11 23:57:40,523 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:57:40,688 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:57:40,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:57:40,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:57:40,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:57:40,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:57:40,690 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-09-11 23:57:40,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:57:40,705 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-09-11 23:57:40,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:57:40,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:57:40,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:57:40,707 INFO L225 Difference]: With dead ends: 133 [2020-09-11 23:57:40,707 INFO L226 Difference]: Without dead ends: 54 [2020-09-11 23:57:40,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 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 23:57:40,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-11 23:57:40,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-11 23:57:40,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-11 23:57:40,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-09-11 23:57:40,711 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-09-11 23:57:40,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:57:40,711 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-09-11 23:57:40,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:57:40,712 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-09-11 23:57:40,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:57:40,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:57:40,713 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 23:57:40,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 23:57:40,713 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:57:40,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:57:40,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-09-11 23:57:40,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:57:40,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767979562] [2020-09-11 23:57:40,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:57:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:57:40,791 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 23:57:40,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767979562] [2020-09-11 23:57:40,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:57:40,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:57:40,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1103241868] [2020-09-11 23:57:40,795 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:57:40,799 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:57:40,804 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 37 transitions. [2020-09-11 23:57:40,804 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:57:40,849 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:57:40,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:57:40,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:57:40,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:57:40,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:57:40,851 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-09-11 23:57:40,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:57:40,876 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-09-11 23:57:40,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:57:40,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:57:40,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:57:40,877 INFO L225 Difference]: With dead ends: 63 [2020-09-11 23:57:40,878 INFO L226 Difference]: Without dead ends: 38 [2020-09-11 23:57:40,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 23:57:40,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-11 23:57:40,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-11 23:57:40,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-11 23:57:40,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-09-11 23:57:40,881 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-09-11 23:57:40,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:57:40,883 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-09-11 23:57:40,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:57:40,883 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-09-11 23:57:40,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:57:40,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:57:40,887 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 23:57:40,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 23:57:40,887 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:57:40,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:57:40,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-09-11 23:57:40,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:57:40,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402955002] [2020-09-11 23:57:40,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:57:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:57:40,998 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 23:57:40,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402955002] [2020-09-11 23:57:40,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:57:40,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:57:41,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1391455365] [2020-09-11 23:57:41,000 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:57:41,002 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:57:41,006 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-09-11 23:57:41,007 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:57:41,017 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:57:41,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:57:41,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:57:41,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:57:41,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:57:41,019 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-09-11 23:57:41,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:57:41,042 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-09-11 23:57:41,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:57:41,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:57:41,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:57:41,044 INFO L225 Difference]: With dead ends: 56 [2020-09-11 23:57:41,044 INFO L226 Difference]: Without dead ends: 35 [2020-09-11 23:57:41,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 23:57:41,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-11 23:57:41,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-11 23:57:41,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-11 23:57:41,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-09-11 23:57:41,048 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-09-11 23:57:41,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:57:41,049 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-09-11 23:57:41,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:57:41,049 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-09-11 23:57:41,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:57:41,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:57:41,053 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 23:57:41,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 23:57:41,053 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:57:41,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:57:41,054 INFO L82 PathProgramCache]: Analyzing trace with hash -828702424, now seen corresponding path program 4 times [2020-09-11 23:57:41,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:57:41,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167861619] [2020-09-11 23:57:41,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:57:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:57:41,146 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 23:57:41,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167861619] [2020-09-11 23:57:41,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:57:41,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:57:41,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [30394572] [2020-09-11 23:57:41,147 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:57:41,151 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:57:41,158 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-09-11 23:57:41,158 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:57:41,167 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:57:41,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:57:41,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:57:41,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:57:41,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:57:41,168 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-09-11 23:57:41,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:57:41,214 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-09-11 23:57:41,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:57:41,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:57:41,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:57:41,215 INFO L225 Difference]: With dead ends: 34 [2020-09-11 23:57:41,215 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:57:41,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:57:41,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:57:41,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:57:41,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:57:41,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:57:41,217 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 23:57:41,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:57:41,217 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:57:41,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:57:41,217 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:57:41,217 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:57:41,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 23:57:41,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:57:41 BasicIcfg [2020-09-11 23:57:41,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:57:41,228 INFO L168 Benchmark]: Toolchain (without parser) took 5552.72 ms. Allocated memory was 140.5 MB in the beginning and 284.2 MB in the end (delta: 143.7 MB). Free memory was 100.9 MB in the beginning and 253.3 MB in the end (delta: -152.4 MB). Peak memory consumption was 115.1 MB. Max. memory is 7.1 GB. [2020-09-11 23:57:41,230 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:57:41,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.01 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 100.5 MB in the beginning and 161.3 MB in the end (delta: -60.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-11 23:57:41,232 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.47 ms. Allocated memory is still 203.9 MB. Free memory was 161.3 MB in the beginning and 159.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:57:41,238 INFO L168 Benchmark]: Boogie Preprocessor took 32.93 ms. Allocated memory is still 203.9 MB. Free memory was 159.3 MB in the beginning and 158.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 23:57:41,239 INFO L168 Benchmark]: RCFGBuilder took 528.88 ms. Allocated memory is still 203.9 MB. Free memory was 157.4 MB in the beginning and 135.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-09-11 23:57:41,240 INFO L168 Benchmark]: TraceAbstraction took 4154.36 ms. Allocated memory was 203.9 MB in the beginning and 284.2 MB in the end (delta: 80.2 MB). Free memory was 135.0 MB in the beginning and 253.3 MB in the end (delta: -118.3 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2020-09-11 23:57:41,254 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 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 765.01 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 100.5 MB in the beginning and 161.3 MB in the end (delta: -60.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.47 ms. Allocated memory is still 203.9 MB. Free memory was 161.3 MB in the beginning and 159.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.93 ms. Allocated memory is still 203.9 MB. Free memory was 159.3 MB in the beginning and 158.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 528.88 ms. Allocated memory is still 203.9 MB. Free memory was 157.4 MB in the beginning and 135.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4154.36 ms. Allocated memory was 203.9 MB in the beginning and 284.2 MB in the end (delta: 80.2 MB). Free memory was 135.0 MB in the beginning and 253.3 MB in the end (delta: -118.3 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 661 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2768 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 186 SDtfs, 119 SDslu, 218 SDs, 0 SdLazy, 110 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 3869 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...