/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/safe034_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 02:22:49,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 02:22:49,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 02:22:49,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 02:22:49,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 02:22:49,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 02:22:49,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 02:22:49,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 02:22:49,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 02:22:49,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 02:22:49,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 02:22:49,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 02:22:49,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 02:22:49,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 02:22:49,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 02:22:49,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 02:22:49,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 02:22:49,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 02:22:49,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 02:22:49,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 02:22:49,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 02:22:49,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 02:22:49,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 02:22:49,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 02:22:49,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-18 02:22:49,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-18 02:22:49,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-18 02:22:49,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-18 02:22:49,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-18 02:22:49,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-18 02:22:49,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 02:22:49,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 02:22:49,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 02:22:49,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 02:22:49,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 02:22:49,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 02:22:49,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 02:22:49,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 02:22:49,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 02:22:49,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 02:22:49,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 02:22:49,161 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-18 02:22:49,187 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 02:22:49,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 02:22:49,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 02:22:49,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 02:22:49,189 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 02:22:49,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 02:22:49,189 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 02:22:49,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 02:22:49,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 02:22:49,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 02:22:49,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 02:22:49,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 02:22:49,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 02:22:49,190 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 02:22:49,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 02:22:49,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 02:22:49,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 02:22:49,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 02:22:49,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 02:22:49,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 02:22:49,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 02:22:49,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 02:22:49,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 02:22:49,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 02:22:49,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 02:22:49,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 02:22:49,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 02:22:49,193 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 02:22:49,194 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 02:22:49,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 02:22:49,194 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 02:22:49,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 02:22:49,659 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 02:22:49,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 02:22:49,669 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 02:22:49,670 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 02:22:49,673 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2020-09-18 02:22:49,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e693e215b/33aea1121d794123bc070307dd0d193c/FLAG3817150af [2020-09-18 02:22:50,382 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 02:22:50,383 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2020-09-18 02:22:50,400 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e693e215b/33aea1121d794123bc070307dd0d193c/FLAG3817150af [2020-09-18 02:22:50,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e693e215b/33aea1121d794123bc070307dd0d193c [2020-09-18 02:22:50,665 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 02:22:50,671 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 02:22:50,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 02:22:50,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 02:22:50,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 02:22:50,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:22:50" (1/1) ... [2020-09-18 02:22:50,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@235a7cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:22:50, skipping insertion in model container [2020-09-18 02:22:50,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:22:50" (1/1) ... [2020-09-18 02:22:50,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 02:22:50,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 02:22:51,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:22:51,359 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 02:22:51,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:22:51,503 INFO L208 MainTranslator]: Completed translation [2020-09-18 02:22:51,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:22:51 WrapperNode [2020-09-18 02:22:51,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 02:22:51,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 02:22:51,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 02:22:51,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 02:22:51,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:22:51" (1/1) ... [2020-09-18 02:22:51,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:22:51" (1/1) ... [2020-09-18 02:22:51,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 02:22:51,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 02:22:51,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 02:22:51,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 02:22:51,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:22:51" (1/1) ... [2020-09-18 02:22:51,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:22:51" (1/1) ... [2020-09-18 02:22:51,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:22:51" (1/1) ... [2020-09-18 02:22:51,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:22:51" (1/1) ... [2020-09-18 02:22:51,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:22:51" (1/1) ... [2020-09-18 02:22:51,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:22:51" (1/1) ... [2020-09-18 02:22:51,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:22:51" (1/1) ... [2020-09-18 02:22:51,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 02:22:51,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 02:22:51,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 02:22:51,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 02:22:51,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:22:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-09-18 02:22:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 02:22:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 02:22:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 02:22:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 02:22:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 02:22:51,697 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 02:22:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 02:22:51,697 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 02:22:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 02:22:51,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 02:22:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 02:22:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 02:22:51,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 02:22:51,704 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 02:22:52,070 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 02:22:52,071 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 02:22:52,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:22:52 BoogieIcfgContainer [2020-09-18 02:22:52,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 02:22:52,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 02:22:52,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 02:22:52,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 02:22:52,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 02:22:50" (1/3) ... [2020-09-18 02:22:52,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e3dd190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:22:52, skipping insertion in model container [2020-09-18 02:22:52,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:22:51" (2/3) ... [2020-09-18 02:22:52,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e3dd190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:22:52, skipping insertion in model container [2020-09-18 02:22:52,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:22:52" (3/3) ... [2020-09-18 02:22:52,087 INFO L109 eAbstractionObserver]: Analyzing ICFG safe034_tso.oepc.i [2020-09-18 02:22:52,099 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 02:22:52,100 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 02:22:52,109 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 02:22:52,110 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 02:22:52,140 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,141 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,141 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,141 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,142 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,142 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,142 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,143 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,143 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,143 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,144 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,144 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,144 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,145 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,145 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,145 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,146 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,146 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,150 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,151 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,151 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,151 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,162 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,162 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,162 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,163 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,166 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,167 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,167 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,167 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:22:52,189 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 02:22:52,214 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 02:22:52,214 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 02:22:52,214 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 02:22:52,214 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 02:22:52,215 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 02:22:52,215 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 02:22:52,215 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 02:22:52,215 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 02:22:52,235 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-18 02:22:52,238 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 02:22:52,293 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 02:22:52,297 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 02:22:52,305 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 49 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. [2020-09-18 02:22:52,311 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 02:22:52,354 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 02:22:52,354 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 02:22:52,355 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 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. [2020-09-18 02:22:52,357 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-18 02:22:52,358 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 02:22:53,785 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-18 02:22:53,914 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2732 [2020-09-18 02:22:53,915 INFO L214 etLargeBlockEncoding]: Total number of compositions: 60 [2020-09-18 02:22:53,919 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-18 02:22:53,948 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-18 02:22:53,950 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-18 02:22:53,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 02:22:53,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:22:53,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:22:53,962 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:22:53,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:22:53,969 INFO L82 PathProgramCache]: Analyzing trace with hash 760003701, now seen corresponding path program 1 times [2020-09-18 02:22:53,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:22:53,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741405114] [2020-09-18 02:22:53,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:22:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:22:54,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:22:54,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741405114] [2020-09-18 02:22:54,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:22:54,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 02:22:54,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [224215785] [2020-09-18 02:22:54,260 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:22:54,266 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:22:54,280 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 02:22:54,280 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:22:54,282 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:22:54,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:22:54,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:22:54,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:22:54,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:22:54,304 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-18 02:22:54,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:22:54,346 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-09-18 02:22:54,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:22:54,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 02:22:54,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:22:54,367 INFO L225 Difference]: With dead ends: 290 [2020-09-18 02:22:54,368 INFO L226 Difference]: Without dead ends: 226 [2020-09-18 02:22:54,369 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 [2020-09-18 02:22:54,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-18 02:22:54,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-18 02:22:54,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-18 02:22:54,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-09-18 02:22:54,449 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-09-18 02:22:54,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:22:54,451 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-09-18 02:22:54,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:22:54,451 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-09-18 02:22:54,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 02:22:54,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:22:54,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:22:54,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 02:22:54,453 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:22:54,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:22:54,454 INFO L82 PathProgramCache]: Analyzing trace with hash 2069729619, now seen corresponding path program 1 times [2020-09-18 02:22:54,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:22:54,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80915999] [2020-09-18 02:22:54,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:22:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:22:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:22:54,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80915999] [2020-09-18 02:22:54,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:22:54,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:22:54,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [824484411] [2020-09-18 02:22:54,590 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:22:54,591 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:22:54,594 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-18 02:22:54,594 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:22:54,660 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 02:22:54,686 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:22:54,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:22:54,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:22:54,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:22:54,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:22:54,689 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 4 states. [2020-09-18 02:22:54,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:22:54,761 INFO L93 Difference]: Finished difference Result 242 states and 605 transitions. [2020-09-18 02:22:54,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 02:22:54,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-18 02:22:54,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:22:54,764 INFO L225 Difference]: With dead ends: 242 [2020-09-18 02:22:54,764 INFO L226 Difference]: Without dead ends: 178 [2020-09-18 02:22:54,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:22:54,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-18 02:22:54,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-09-18 02:22:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-18 02:22:54,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 434 transitions. [2020-09-18 02:22:54,788 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 434 transitions. Word has length 9 [2020-09-18 02:22:54,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:22:54,788 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 434 transitions. [2020-09-18 02:22:54,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:22:54,788 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 434 transitions. [2020-09-18 02:22:54,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 02:22:54,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:22:54,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:22:54,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 02:22:54,791 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:22:54,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:22:54,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1183022512, now seen corresponding path program 1 times [2020-09-18 02:22:54,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:22:54,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051695903] [2020-09-18 02:22:54,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:22:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:22:54,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:22:54,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051695903] [2020-09-18 02:22:54,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:22:54,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:22:54,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [412534398] [2020-09-18 02:22:54,958 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:22:54,959 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:22:54,963 INFO L274 McrAutomatonBuilder]: Finished intersection with 24 states and 35 transitions. [2020-09-18 02:22:54,963 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:22:55,026 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2031#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 02:22:55,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-18 02:22:55,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:22:55,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-18 02:22:55,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:22:55,027 INFO L87 Difference]: Start difference. First operand 178 states and 434 transitions. Second operand 6 states. [2020-09-18 02:22:55,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:22:55,086 INFO L93 Difference]: Finished difference Result 163 states and 368 transitions. [2020-09-18 02:22:55,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 02:22:55,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-09-18 02:22:55,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:22:55,088 INFO L225 Difference]: With dead ends: 163 [2020-09-18 02:22:55,088 INFO L226 Difference]: Without dead ends: 126 [2020-09-18 02:22:55,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-18 02:22:55,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-18 02:22:55,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-09-18 02:22:55,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-18 02:22:55,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 278 transitions. [2020-09-18 02:22:55,099 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 278 transitions. Word has length 11 [2020-09-18 02:22:55,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:22:55,100 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 278 transitions. [2020-09-18 02:22:55,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-18 02:22:55,100 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 278 transitions. [2020-09-18 02:22:55,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-18 02:22:55,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:22:55,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:22:55,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 02:22:55,102 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:22:55,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:22:55,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1548024821, now seen corresponding path program 1 times [2020-09-18 02:22:55,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:22:55,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894713808] [2020-09-18 02:22:55,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:22:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:22:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:22:55,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894713808] [2020-09-18 02:22:55,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:22:55,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 02:22:55,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1441340956] [2020-09-18 02:22:55,193 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:22:55,195 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:22:55,199 INFO L274 McrAutomatonBuilder]: Finished intersection with 39 states and 66 transitions. [2020-09-18 02:22:55,199 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:22:55,309 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2455#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 02:22:55,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-18 02:22:55,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:22:55,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-18 02:22:55,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-18 02:22:55,310 INFO L87 Difference]: Start difference. First operand 126 states and 278 transitions. Second operand 7 states. [2020-09-18 02:22:55,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:22:55,405 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-09-18 02:22:55,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 02:22:55,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-18 02:22:55,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:22:55,407 INFO L225 Difference]: With dead ends: 118 [2020-09-18 02:22:55,407 INFO L226 Difference]: Without dead ends: 108 [2020-09-18 02:22:55,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-18 02:22:55,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-18 02:22:55,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-09-18 02:22:55,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-18 02:22:55,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-09-18 02:22:55,415 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-09-18 02:22:55,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:22:55,416 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-09-18 02:22:55,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-18 02:22:55,416 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-09-18 02:22:55,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 02:22:55,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:22:55,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:22:55,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 02:22:55,418 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:22:55,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:22:55,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2137678742, now seen corresponding path program 1 times [2020-09-18 02:22:55,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:22:55,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353941115] [2020-09-18 02:22:55,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:22:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:22:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:22:55,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353941115] [2020-09-18 02:22:55,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:22:55,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:22:55,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2127199636] [2020-09-18 02:22:55,483 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:22:55,488 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:22:55,493 INFO L274 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-09-18 02:22:55,494 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:22:55,504 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:22:55,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:22:55,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:22:55,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:22:55,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:22:55,505 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 3 states. [2020-09-18 02:22:55,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:22:55,516 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-09-18 02:22:55,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:22:55,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-18 02:22:55,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:22:55,517 INFO L225 Difference]: With dead ends: 133 [2020-09-18 02:22:55,517 INFO L226 Difference]: Without dead ends: 54 [2020-09-18 02:22:55,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:22:55,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-18 02:22:55,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-18 02:22:55,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-18 02:22:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-09-18 02:22:55,522 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-09-18 02:22:55,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:22:55,522 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-09-18 02:22:55,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:22:55,523 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-09-18 02:22:55,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 02:22:55,524 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:22:55,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:22:55,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 02:22:55,524 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:22:55,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:22:55,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1164645812, now seen corresponding path program 2 times [2020-09-18 02:22:55,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:22:55,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758007731] [2020-09-18 02:22:55,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:22:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:22:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:22:55,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758007731] [2020-09-18 02:22:55,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:22:55,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:22:55,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1970091728] [2020-09-18 02:22:55,591 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:22:55,593 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:22:55,601 INFO L274 McrAutomatonBuilder]: Finished intersection with 57 states and 105 transitions. [2020-09-18 02:22:55,602 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:22:55,633 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:22:55,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:22:55,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:22:55,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:22:55,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:22:55,635 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-09-18 02:22:55,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:22:55,651 INFO L93 Difference]: Finished difference Result 67 states and 119 transitions. [2020-09-18 02:22:55,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:22:55,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 02:22:55,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:22:55,652 INFO L225 Difference]: With dead ends: 67 [2020-09-18 02:22:55,653 INFO L226 Difference]: Without dead ends: 30 [2020-09-18 02:22:55,653 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 [2020-09-18 02:22:55,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-18 02:22:55,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-18 02:22:55,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-18 02:22:55,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-09-18 02:22:55,656 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-09-18 02:22:55,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:22:55,656 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-09-18 02:22:55,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:22:55,656 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-09-18 02:22:55,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 02:22:55,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:22:55,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:22:55,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-18 02:22:55,658 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:22:55,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:22:55,659 INFO L82 PathProgramCache]: Analyzing trace with hash 2098338434, now seen corresponding path program 3 times [2020-09-18 02:22:55,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:22:55,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684861384] [2020-09-18 02:22:55,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:22:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:22:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:22:55,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684861384] [2020-09-18 02:22:55,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:22:55,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:22:55,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1548243567] [2020-09-18 02:22:55,719 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:22:55,721 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:22:55,728 INFO L274 McrAutomatonBuilder]: Finished intersection with 41 states and 59 transitions. [2020-09-18 02:22:55,728 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:22:55,746 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:22:55,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:22:55,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:22:55,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:22:55,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:22:55,748 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-09-18 02:22:55,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:22:55,759 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-09-18 02:22:55,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:22:55,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 02:22:55,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:22:55,759 INFO L225 Difference]: With dead ends: 29 [2020-09-18 02:22:55,760 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 02:22:55,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:22:55,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 02:22:55,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 02:22:55,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 02:22:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 02:22:55,761 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-18 02:22:55,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:22:55,761 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 02:22:55,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:22:55,762 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 02:22:55,762 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 02:22:55,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-18 02:22:55,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 02:22:55 BasicIcfg [2020-09-18 02:22:55,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 02:22:55,770 INFO L168 Benchmark]: Toolchain (without parser) took 5103.40 ms. Allocated memory was 145.8 MB in the beginning and 249.6 MB in the end (delta: 103.8 MB). Free memory was 100.4 MB in the beginning and 158.8 MB in the end (delta: -58.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. [2020-09-18 02:22:55,771 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 145.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-18 02:22:55,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 832.35 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 99.7 MB in the beginning and 160.7 MB in the end (delta: -60.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-09-18 02:22:55,772 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.61 ms. Allocated memory is still 202.9 MB. Free memory was 160.7 MB in the beginning and 158.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-18 02:22:55,773 INFO L168 Benchmark]: Boogie Preprocessor took 43.21 ms. Allocated memory is still 202.9 MB. Free memory was 158.6 MB in the beginning and 157.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-18 02:22:55,774 INFO L168 Benchmark]: RCFGBuilder took 467.35 ms. Allocated memory is still 202.9 MB. Free memory was 157.2 MB in the beginning and 134.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-18 02:22:55,775 INFO L168 Benchmark]: TraceAbstraction took 3689.58 ms. Allocated memory was 202.9 MB in the beginning and 249.6 MB in the end (delta: 46.7 MB). Free memory was 134.1 MB in the beginning and 158.8 MB in the end (delta: -24.7 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-18 02:22:55,779 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 145.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 832.35 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 99.7 MB in the beginning and 160.7 MB in the end (delta: -60.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.61 ms. Allocated memory is still 202.9 MB. Free memory was 160.7 MB in the beginning and 158.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.21 ms. Allocated memory is still 202.9 MB. Free memory was 158.6 MB in the beginning and 157.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 467.35 ms. Allocated memory is still 202.9 MB. Free memory was 157.2 MB in the beginning and 134.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3689.58 ms. Allocated memory was 202.9 MB in the beginning and 249.6 MB in the end (delta: 46.7 MB). Free memory was 134.1 MB in the beginning and 158.8 MB in the end (delta: -24.7 MB). Peak memory consumption was 21.9 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, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 665 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2732 CheckedPairsTotal, 60 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 141 SDtfs, 106 SDslu, 217 SDs, 0 SdLazy, 103 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 83 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 2838 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...