/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/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 01:31:54,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 01:31:54,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 01:31:54,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 01:31:54,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 01:31:54,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 01:31:54,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 01:31:54,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 01:31:54,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 01:31:54,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 01:31:54,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 01:31:54,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 01:31:54,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 01:31:54,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 01:31:54,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 01:31:54,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 01:31:54,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 01:31:54,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 01:31:54,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 01:31:54,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 01:31:54,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 01:31:54,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 01:31:54,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 01:31:54,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 01:31:54,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-18 01:31:54,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 01:31:54,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 01:31:54,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 01:31:54,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 01:31:54,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 01:31:54,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 01:31:54,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 01:31:54,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 01:31:54,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 01:31:54,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 01:31:54,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 01:31:54,295 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 01:31:54,336 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 01:31:54,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 01:31:54,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 01:31:54,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 01:31:54,338 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 01:31:54,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 01:31:54,339 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 01:31:54,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 01:31:54,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 01:31:54,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 01:31:54,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 01:31:54,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 01:31:54,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 01:31:54,340 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 01:31:54,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 01:31:54,340 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 01:31:54,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 01:31:54,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 01:31:54,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 01:31:54,341 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 01:31:54,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 01:31:54,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 01:31:54,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 01:31:54,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 01:31:54,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 01:31:54,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 01:31:54,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 01:31:54,343 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 01:31:54,343 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 01:31:54,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 01:31:54,344 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 01:31:54,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 01:31:54,792 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 01:31:54,796 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 01:31:54,798 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 01:31:54,799 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 01:31:54,800 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-09-18 01:31:54,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e606ad4/aa4138094a7b473eb2e2dd528eda5d66/FLAG704601f4b [2020-09-18 01:31:55,511 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 01:31:55,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-09-18 01:31:55,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e606ad4/aa4138094a7b473eb2e2dd528eda5d66/FLAG704601f4b [2020-09-18 01:31:55,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e606ad4/aa4138094a7b473eb2e2dd528eda5d66 [2020-09-18 01:31:55,788 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 01:31:55,793 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 01:31:55,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 01:31:55,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 01:31:55,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 01:31:55,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 01:31:55" (1/1) ... [2020-09-18 01:31:55,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45371010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:31:55, skipping insertion in model container [2020-09-18 01:31:55,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 01:31:55" (1/1) ... [2020-09-18 01:31:55,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 01:31:55,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 01:31:56,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 01:31:56,444 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 01:31:56,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 01:31:56,584 INFO L208 MainTranslator]: Completed translation [2020-09-18 01:31:56,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:31:56 WrapperNode [2020-09-18 01:31:56,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 01:31:56,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 01:31:56,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 01:31:56,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 01:31:56,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:31:56" (1/1) ... [2020-09-18 01:31:56,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:31:56" (1/1) ... [2020-09-18 01:31:56,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 01:31:56,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 01:31:56,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 01:31:56,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 01:31:56,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:31:56" (1/1) ... [2020-09-18 01:31:56,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:31:56" (1/1) ... [2020-09-18 01:31:56,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:31:56" (1/1) ... [2020-09-18 01:31:56,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:31:56" (1/1) ... [2020-09-18 01:31:56,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:31:56" (1/1) ... [2020-09-18 01:31:56,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:31:56" (1/1) ... [2020-09-18 01:31:56,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:31:56" (1/1) ... [2020-09-18 01:31:56,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 01:31:56,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 01:31:56,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 01:31:56,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 01:31:56,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:31:56" (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 01:31:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 01:31:56,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 01:31:56,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 01:31:56,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 01:31:56,771 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 01:31:56,772 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 01:31:56,772 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 01:31:56,772 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 01:31:56,772 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 01:31:56,773 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 01:31:56,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 01:31:56,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 01:31:56,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 01:31:56,775 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 01:31:57,152 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 01:31:57,153 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 01:31:57,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 01:31:57 BoogieIcfgContainer [2020-09-18 01:31:57,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 01:31:57,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 01:31:57,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 01:31:57,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 01:31:57,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 01:31:55" (1/3) ... [2020-09-18 01:31:57,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3468f28c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 01:31:57, skipping insertion in model container [2020-09-18 01:31:57,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:31:56" (2/3) ... [2020-09-18 01:31:57,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3468f28c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 01:31:57, skipping insertion in model container [2020-09-18 01:31:57,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 01:31:57" (3/3) ... [2020-09-18 01:31:57,168 INFO L109 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2020-09-18 01:31:57,180 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 01:31:57,181 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 01:31:57,191 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 01:31:57,192 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 01:31:57,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,223 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,223 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,223 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,224 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,224 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,225 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,225 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,225 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,225 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,226 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,226 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,226 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,227 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,227 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,227 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,228 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,228 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,233 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,233 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,234 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,234 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,245 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,245 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,246 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,246 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,250 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,250 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,250 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,250 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:31:57,275 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 01:31:57,304 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 01:31:57,304 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 01:31:57,304 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 01:31:57,305 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 01:31:57,305 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 01:31:57,305 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 01:31:57,305 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 01:31:57,305 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 01:31:57,325 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-18 01:31:57,328 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 01:31:57,380 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 01:31:57,380 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 01:31:57,387 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 01:31:57,390 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 01:31:57,413 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 01:31:57,413 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 01:31:57,414 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 01:31:57,416 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-18 01:31:57,418 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 01:31:59,010 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-09-18 01:31:59,011 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-18 01:31:59,016 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-18 01:31:59,046 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-18 01:31:59,048 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-18 01:31:59,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 01:31:59,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:31:59,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:31:59,060 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:31:59,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:31:59,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-09-18 01:31:59,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:31:59,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789823020] [2020-09-18 01:31:59,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:31:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:31:59,339 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 01:31:59,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789823020] [2020-09-18 01:31:59,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:31:59,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 01:31:59,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [629775693] [2020-09-18 01:31:59,344 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:31:59,348 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:31:59,369 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 01:31:59,369 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:31:59,371 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:31:59,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 01:31:59,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:31:59,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 01:31:59,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 01:31:59,397 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-18 01:31:59,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:31:59,438 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-18 01:31:59,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 01:31:59,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 01:31:59,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:31:59,460 INFO L225 Difference]: With dead ends: 282 [2020-09-18 01:31:59,461 INFO L226 Difference]: Without dead ends: 218 [2020-09-18 01:31:59,463 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 01:31:59,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-18 01:31:59,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-18 01:31:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-18 01:31:59,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-18 01:31:59,539 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-18 01:31:59,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:31:59,541 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-18 01:31:59,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 01:31:59,541 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-18 01:31:59,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 01:31:59,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:31:59,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:31:59,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 01:31:59,544 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:31:59,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:31:59,544 INFO L82 PathProgramCache]: Analyzing trace with hash -225372369, now seen corresponding path program 1 times [2020-09-18 01:31:59,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:31:59,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554726272] [2020-09-18 01:31:59,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:31:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:31:59,700 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 01:31:59,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554726272] [2020-09-18 01:31:59,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:31:59,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 01:31:59,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1849398057] [2020-09-18 01:31:59,702 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:31:59,703 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:31:59,707 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-09-18 01:31:59,707 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:31:59,733 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:31:59,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 01:31:59,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:31:59,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 01:31:59,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 01:31:59,741 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-18 01:31:59,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:31:59,784 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-18 01:31:59,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 01:31:59,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-18 01:31:59,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:31:59,787 INFO L225 Difference]: With dead ends: 242 [2020-09-18 01:31:59,788 INFO L226 Difference]: Without dead ends: 146 [2020-09-18 01:31:59,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 01:31:59,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-18 01:31:59,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-18 01:31:59,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-18 01:31:59,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-09-18 01:31:59,809 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-09-18 01:31:59,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:31:59,810 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-09-18 01:31:59,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 01:31:59,810 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-09-18 01:31:59,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 01:31:59,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:31:59,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:31:59,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 01:31:59,812 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:31:59,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:31:59,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-09-18 01:31:59,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:31:59,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072000845] [2020-09-18 01:31:59,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:31:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:31:59,880 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 01:31:59,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072000845] [2020-09-18 01:31:59,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:31:59,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 01:31:59,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1387433130] [2020-09-18 01:31:59,881 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:31:59,882 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:31:59,885 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-09-18 01:31:59,885 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:31:59,927 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:31:59,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 01:31:59,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:31:59,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 01:31:59,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 01:31:59,928 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-09-18 01:31:59,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:31:59,935 INFO L93 Difference]: Finished difference Result 134 states and 324 transitions. [2020-09-18 01:31:59,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 01:31:59,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-18 01:31:59,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:31:59,937 INFO L225 Difference]: With dead ends: 134 [2020-09-18 01:31:59,937 INFO L226 Difference]: Without dead ends: 134 [2020-09-18 01:31:59,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 01:31:59,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-18 01:31:59,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-09-18 01:31:59,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-18 01:31:59,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2020-09-18 01:31:59,948 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 11 [2020-09-18 01:31:59,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:31:59,948 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2020-09-18 01:31:59,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 01:31:59,948 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2020-09-18 01:31:59,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-18 01:31:59,950 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:31:59,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:31:59,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 01:31:59,951 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:31:59,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:31:59,951 INFO L82 PathProgramCache]: Analyzing trace with hash 554696714, now seen corresponding path program 1 times [2020-09-18 01:31:59,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:31:59,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551585239] [2020-09-18 01:31:59,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:31:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:32:00,029 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 01:32:00,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551585239] [2020-09-18 01:32:00,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:32:00,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 01:32:00,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [582537211] [2020-09-18 01:32:00,031 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:32:00,032 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:32:00,037 INFO L274 McrAutomatonBuilder]: Finished intersection with 41 states and 64 transitions. [2020-09-18 01:32:00,037 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:32:00,066 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:32:00,087 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:32:00,103 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:32:00,119 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:32:00,148 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:32:00,170 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:32:00,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 01:32:00,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:32:00,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 01:32:00,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 01:32:00,171 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand 4 states. [2020-09-18 01:32:00,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:32:00,223 INFO L93 Difference]: Finished difference Result 122 states and 292 transitions. [2020-09-18 01:32:00,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 01:32:00,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-18 01:32:00,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:32:00,224 INFO L225 Difference]: With dead ends: 122 [2020-09-18 01:32:00,224 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 01:32:00,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 01:32:00,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 01:32:00,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 01:32:00,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 01:32:00,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 01:32:00,226 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-09-18 01:32:00,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:32:00,226 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 01:32:00,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 01:32:00,227 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 01:32:00,227 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 01:32:00,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 01:32:00,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 01:32:00 BasicIcfg [2020-09-18 01:32:00,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 01:32:00,236 INFO L168 Benchmark]: Toolchain (without parser) took 4444.73 ms. Allocated memory was 140.5 MB in the beginning and 246.4 MB in the end (delta: 105.9 MB). Free memory was 102.6 MB in the beginning and 212.5 MB in the end (delta: -109.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-18 01:32:00,237 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-18 01:32:00,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 790.67 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 101.9 MB in the beginning and 162.3 MB in the end (delta: -60.4 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-09-18 01:32:00,239 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.54 ms. Allocated memory is still 205.0 MB. Free memory was 162.3 MB in the beginning and 160.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-18 01:32:00,240 INFO L168 Benchmark]: Boogie Preprocessor took 31.45 ms. Allocated memory is still 205.0 MB. Free memory was 160.4 MB in the beginning and 159.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-18 01:32:00,241 INFO L168 Benchmark]: RCFGBuilder took 483.40 ms. Allocated memory is still 205.0 MB. Free memory was 159.1 MB in the beginning and 136.7 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-18 01:32:00,241 INFO L168 Benchmark]: TraceAbstraction took 3072.73 ms. Allocated memory was 205.0 MB in the beginning and 246.4 MB in the end (delta: 41.4 MB). Free memory was 136.0 MB in the beginning and 212.5 MB in the end (delta: -76.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-18 01:32:00,246 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 790.67 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 101.9 MB in the beginning and 162.3 MB in the end (delta: -60.4 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.54 ms. Allocated memory is still 205.0 MB. Free memory was 162.3 MB in the beginning and 160.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.45 ms. Allocated memory is still 205.0 MB. Free memory was 160.4 MB in the beginning and 159.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 483.40 ms. Allocated memory is still 205.0 MB. Free memory was 159.1 MB in the beginning and 136.7 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3072.73 ms. Allocated memory was 205.0 MB in the beginning and 246.4 MB in the end (delta: 41.4 MB). Free memory was 136.0 MB in the beginning and 212.5 MB in the end (delta: -76.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 665 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 68 SDtfs, 47 SDslu, 68 SDs, 0 SdLazy, 28 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 1071 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...