/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/safe013_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 01:03:33,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:03:33,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:03:33,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:03:33,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:03:33,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:03:33,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:03:33,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:03:33,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:03:33,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:03:33,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:03:33,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:03:33,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:03:33,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:03:33,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:03:33,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:03:33,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:03:33,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:03:33,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:03:33,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:03:33,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:03:33,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:03:33,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:03:33,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:03:33,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-06 01:03:33,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 01:03:33,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 01:03:33,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 01:03:33,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 01:03:33,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 01:03:33,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 01:03:33,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 01:03:33,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 01:03:33,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:03:33,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:03:33,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:03:33,194 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 [2020-10-06 01:03:33,216 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:03:33,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:03:33,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:03:33,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:03:33,219 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:03:33,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:03:33,219 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:03:33,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:03:33,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:03:33,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:03:33,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:03:33,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:03:33,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:03:33,220 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:03:33,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:03:33,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:03:33,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:03:33,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:03:33,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:03:33,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:03:33,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:03:33,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:03:33,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:03:33,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:03:33,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:03:33,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:03:33,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:03:33,223 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:03:33,224 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:03:33,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:03:33,224 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:03:33,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:03:33,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:03:33,513 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:03:33,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:03:33,518 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:03:33,519 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-10-06 01:03:33,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d58a33aea/d095504ac5c24769933adfd3e8a7df8d/FLAGa081f2d6f [2020-10-06 01:03:34,093 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:03:34,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-10-06 01:03:34,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d58a33aea/d095504ac5c24769933adfd3e8a7df8d/FLAGa081f2d6f [2020-10-06 01:03:34,422 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d58a33aea/d095504ac5c24769933adfd3e8a7df8d [2020-10-06 01:03:34,433 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:03:34,435 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:03:34,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:03:34,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:03:34,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:03:34,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:03:34" (1/1) ... [2020-10-06 01:03:34,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65cba3af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:34, skipping insertion in model container [2020-10-06 01:03:34,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:03:34" (1/1) ... [2020-10-06 01:03:34,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:03:34,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:03:34,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:03:34,921 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:03:34,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:03:35,040 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:03:35,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35 WrapperNode [2020-10-06 01:03:35,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:03:35,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:03:35,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:03:35,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:03:35,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... [2020-10-06 01:03:35,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... [2020-10-06 01:03:35,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:03:35,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:03:35,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:03:35,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:03:35,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... [2020-10-06 01:03:35,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... [2020-10-06 01:03:35,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... [2020-10-06 01:03:35,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... [2020-10-06 01:03:35,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... [2020-10-06 01:03:35,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... [2020-10-06 01:03:35,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... [2020-10-06 01:03:35,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:03:35,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:03:35,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:03:35,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:03:35,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (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 [2020-10-06 01:03:35,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:03:35,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 01:03:35,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:03:35,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:03:35,200 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-06 01:03:35,201 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-06 01:03:35,201 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-06 01:03:35,201 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-06 01:03:35,201 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-06 01:03:35,201 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-06 01:03:35,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 01:03:35,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:03:35,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:03:35,204 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 01:03:35,581 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:03:35,581 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-06 01:03:35,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:03:35 BoogieIcfgContainer [2020-10-06 01:03:35,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:03:35,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:03:35,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:03:35,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:03:35,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:03:34" (1/3) ... [2020-10-06 01:03:35,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707e6389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:03:35, skipping insertion in model container [2020-10-06 01:03:35,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (2/3) ... [2020-10-06 01:03:35,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707e6389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:03:35, skipping insertion in model container [2020-10-06 01:03:35,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:03:35" (3/3) ... [2020-10-06 01:03:35,592 INFO L109 eAbstractionObserver]: Analyzing ICFG safe013_tso.oepc.i [2020-10-06 01:03:35,599 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:03:35,600 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:03:35,606 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:03:35,607 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:03:35,636 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,637 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,637 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,638 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,638 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,639 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,639 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,639 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,640 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,640 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,641 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,641 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,642 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,642 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,642 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,642 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,643 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,643 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,650 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,650 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,650 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,650 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,657 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,658 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,658 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,659 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,661 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,662 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,662 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,662 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:35,678 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 01:03:35,699 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:03:35,699 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:03:35,699 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:03:35,700 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:03:35,700 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:03:35,700 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:03:35,700 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:03:35,700 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:03:35,716 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-06 01:03:35,718 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-06 01:03:35,763 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-06 01:03:35,764 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:03:35,769 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. [2020-10-06 01:03:35,772 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-06 01:03:35,797 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-06 01:03:35,797 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:03:35,798 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. [2020-10-06 01:03:35,800 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-06 01:03:35,801 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:03:37,267 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2190 [2020-10-06 01:03:37,268 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-10-06 01:03:37,272 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-06 01:03:37,297 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-06 01:03:37,299 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-06 01:03:37,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 01:03:37,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:37,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:37,307 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:37,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:37,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1620259193, now seen corresponding path program 1 times [2020-10-06 01:03:37,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:37,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512327833] [2020-10-06 01:03:37,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:37,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512327833] [2020-10-06 01:03:37,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:37,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:03:37,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [547226744] [2020-10-06 01:03:37,573 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:37,576 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:37,590 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 01:03:37,590 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:37,594 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:37,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:03:37,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:37,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:03:37,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:37,612 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-06 01:03:37,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:37,652 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-10-06 01:03:37,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:03:37,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 01:03:37,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:37,668 INFO L225 Difference]: With dead ends: 290 [2020-10-06 01:03:37,669 INFO L226 Difference]: Without dead ends: 226 [2020-10-06 01:03:37,670 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 [2020-10-06 01:03:37,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-06 01:03:37,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-06 01:03:37,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-06 01:03:37,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-10-06 01:03:37,741 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-10-06 01:03:37,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:37,742 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-10-06 01:03:37,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:03:37,742 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-10-06 01:03:37,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:03:37,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:37,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:37,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:03:37,744 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:37,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:37,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1042338189, now seen corresponding path program 1 times [2020-10-06 01:03:37,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:37,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337101089] [2020-10-06 01:03:37,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:37,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337101089] [2020-10-06 01:03:37,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:37,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:03:37,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1843999996] [2020-10-06 01:03:37,811 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:37,812 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:37,815 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-10-06 01:03:37,816 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:37,864 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:37,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:03:37,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:37,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:03:37,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:37,866 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-10-06 01:03:37,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:37,875 INFO L93 Difference]: Finished difference Result 214 states and 585 transitions. [2020-10-06 01:03:37,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:03:37,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-06 01:03:37,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:37,879 INFO L225 Difference]: With dead ends: 214 [2020-10-06 01:03:37,879 INFO L226 Difference]: Without dead ends: 214 [2020-10-06 01:03:37,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:37,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-06 01:03:37,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-10-06 01:03:37,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-06 01:03:37,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 585 transitions. [2020-10-06 01:03:37,900 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 585 transitions. Word has length 9 [2020-10-06 01:03:37,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:37,900 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 585 transitions. [2020-10-06 01:03:37,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:03:37,901 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 585 transitions. [2020-10-06 01:03:37,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-06 01:03:37,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:37,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:37,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:03:37,903 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:37,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:37,903 INFO L82 PathProgramCache]: Analyzing trace with hash 2047253273, now seen corresponding path program 1 times [2020-10-06 01:03:37,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:37,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434165769] [2020-10-06 01:03:37,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:37,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:37,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434165769] [2020-10-06 01:03:37,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:37,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:03:37,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1888863669] [2020-10-06 01:03:37,967 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:37,968 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:37,970 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-10-06 01:03:37,971 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:38,019 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:38,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:03:38,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:38,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:03:38,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:03:38,020 INFO L87 Difference]: Start difference. First operand 214 states and 585 transitions. Second operand 4 states. [2020-10-06 01:03:38,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:38,043 INFO L93 Difference]: Finished difference Result 240 states and 627 transitions. [2020-10-06 01:03:38,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:03:38,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-06 01:03:38,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:38,046 INFO L225 Difference]: With dead ends: 240 [2020-10-06 01:03:38,046 INFO L226 Difference]: Without dead ends: 144 [2020-10-06 01:03:38,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:03:38,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-06 01:03:38,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-06 01:03:38,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-06 01:03:38,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-10-06 01:03:38,058 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 10 [2020-10-06 01:03:38,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:38,059 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-10-06 01:03:38,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:03:38,059 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-10-06 01:03:38,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 01:03:38,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:38,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:38,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 01:03:38,061 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:38,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:38,061 INFO L82 PathProgramCache]: Analyzing trace with hash 315672505, now seen corresponding path program 1 times [2020-10-06 01:03:38,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:38,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609462384] [2020-10-06 01:03:38,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:38,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609462384] [2020-10-06 01:03:38,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:38,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:03:38,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1428554595] [2020-10-06 01:03:38,175 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:38,176 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:38,188 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-10-06 01:03:38,188 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:38,223 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:38,249 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:38,263 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:38,279 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:38,318 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:38,334 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:38,367 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:38,416 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2605#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-06 01:03:38,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:03:38,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:38,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:03:38,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:03:38,417 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 5 states. [2020-10-06 01:03:38,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:38,486 INFO L93 Difference]: Finished difference Result 137 states and 312 transitions. [2020-10-06 01:03:38,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-06 01:03:38,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-06 01:03:38,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:38,487 INFO L225 Difference]: With dead ends: 137 [2020-10-06 01:03:38,488 INFO L226 Difference]: Without dead ends: 97 [2020-10-06 01:03:38,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:03:38,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-06 01:03:38,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-06 01:03:38,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-06 01:03:38,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-10-06 01:03:38,494 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-10-06 01:03:38,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:38,494 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-10-06 01:03:38,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:03:38,494 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-10-06 01:03:38,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 01:03:38,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:38,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:38,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 01:03:38,496 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:38,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:38,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1634628682, now seen corresponding path program 1 times [2020-10-06 01:03:38,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:38,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389579131] [2020-10-06 01:03:38,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:38,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389579131] [2020-10-06 01:03:38,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:38,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:03:38,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [322902717] [2020-10-06 01:03:38,532 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:38,533 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:38,536 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-06 01:03:38,536 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:38,550 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:38,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:03:38,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:38,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:03:38,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:38,552 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-10-06 01:03:38,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:38,568 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-10-06 01:03:38,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:03:38,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-06 01:03:38,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:38,571 INFO L225 Difference]: With dead ends: 115 [2020-10-06 01:03:38,571 INFO L226 Difference]: Without dead ends: 98 [2020-10-06 01:03:38,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:38,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-06 01:03:38,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-06 01:03:38,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-06 01:03:38,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-10-06 01:03:38,576 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-10-06 01:03:38,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:38,577 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-10-06 01:03:38,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:03:38,577 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-10-06 01:03:38,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 01:03:38,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:38,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:38,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 01:03:38,579 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:38,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:38,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1887879687, now seen corresponding path program 1 times [2020-10-06 01:03:38,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:38,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794121831] [2020-10-06 01:03:38,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:38,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794121831] [2020-10-06 01:03:38,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:38,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-06 01:03:38,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1179408675] [2020-10-06 01:03:38,638 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:38,640 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:38,645 INFO L258 McrAutomatonBuilder]: Finished intersection with 43 states and 73 transitions. [2020-10-06 01:03:38,645 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:38,652 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:38,771 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [3257#(not (= 3 ~__unbuffered_cnt~0)), 3258#(not (= ~__unbuffered_cnt~0 2)), 3259#(not (= ~__unbuffered_cnt~0 1)), 3260#(<= ~__unbuffered_cnt~0 0)] [2020-10-06 01:03:38,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-06 01:03:38,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:38,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-06 01:03:38,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-06 01:03:38,772 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 10 states. [2020-10-06 01:03:38,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:38,833 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-10-06 01:03:38,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-06 01:03:38,834 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-10-06 01:03:38,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:38,835 INFO L225 Difference]: With dead ends: 92 [2020-10-06 01:03:38,835 INFO L226 Difference]: Without dead ends: 36 [2020-10-06 01:03:38,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:03:38,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-06 01:03:38,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-06 01:03:38,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-06 01:03:38,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-06 01:03:38,838 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-06 01:03:38,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:38,838 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-06 01:03:38,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-06 01:03:38,838 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-06 01:03:38,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:03:38,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:38,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:38,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-06 01:03:38,840 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:38,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:38,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1759545272, now seen corresponding path program 1 times [2020-10-06 01:03:38,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:38,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312566566] [2020-10-06 01:03:38,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:38,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:38,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312566566] [2020-10-06 01:03:38,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:38,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:03:38,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [624061112] [2020-10-06 01:03:38,879 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:38,881 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:38,889 INFO L258 McrAutomatonBuilder]: Finished intersection with 59 states and 108 transitions. [2020-10-06 01:03:38,889 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:38,913 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:38,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:03:38,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:38,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:03:38,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:03:38,915 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-06 01:03:38,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:38,924 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-06 01:03:38,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:03:38,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-06 01:03:38,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:38,925 INFO L225 Difference]: With dead ends: 35 [2020-10-06 01:03:38,925 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 01:03:38,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:03:38,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 01:03:38,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 01:03:38,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 01:03:38,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 01:03:38,926 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-06 01:03:38,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:38,927 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 01:03:38,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:03:38,927 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 01:03:38,927 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 01:03:38,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-06 01:03:38,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:03:38 BasicIcfg [2020-10-06 01:03:38,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:03:38,934 INFO L168 Benchmark]: Toolchain (without parser) took 4499.08 ms. Allocated memory was 140.0 MB in the beginning and 246.9 MB in the end (delta: 107.0 MB). Free memory was 101.6 MB in the beginning and 110.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 98.1 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:38,935 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-06 01:03:38,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 605.75 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 159.7 MB in the end (delta: -58.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:38,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.52 ms. Allocated memory is still 202.9 MB. Free memory was 159.7 MB in the beginning and 157.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:38,938 INFO L168 Benchmark]: Boogie Preprocessor took 27.69 ms. Allocated memory is still 202.9 MB. Free memory was 157.4 MB in the beginning and 155.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:38,939 INFO L168 Benchmark]: RCFGBuilder took 465.00 ms. Allocated memory is still 202.9 MB. Free memory was 155.5 MB in the beginning and 133.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:38,940 INFO L168 Benchmark]: TraceAbstraction took 3346.69 ms. Allocated memory was 202.9 MB in the beginning and 246.9 MB in the end (delta: 44.0 MB). Free memory was 132.7 MB in the beginning and 110.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 66.2 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:38,944 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 605.75 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 159.7 MB in the end (delta: -58.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.52 ms. Allocated memory is still 202.9 MB. Free memory was 159.7 MB in the beginning and 157.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.69 ms. Allocated memory is still 202.9 MB. Free memory was 157.4 MB in the beginning and 155.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.00 ms. Allocated memory is still 202.9 MB. Free memory was 155.5 MB in the beginning and 133.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3346.69 ms. Allocated memory was 202.9 MB in the beginning and 246.9 MB in the end (delta: 44.0 MB). Free memory was 132.7 MB in the beginning and 110.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 66.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 650 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2190 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: 3.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 126 SDtfs, 105 SDslu, 172 SDs, 0 SdLazy, 99 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2644 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...