/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/safe020_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:41:08,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:41:08,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:41:08,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:41:08,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:41:08,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:41:08,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:41:08,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:41:08,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:41:08,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:41:08,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:41:08,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:41:08,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:41:08,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:41:08,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:41:08,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:41:08,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:41:08,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:41:08,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:41:08,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:41:08,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:41:08,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:41:08,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:41:08,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:41:08,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:41:08,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:41:08,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:41:08,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:41:08,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:41:08,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:41:08,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:41:08,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:41:08,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:41:08,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:41:08,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:41:08,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:41:08,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:41:08,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:41:08,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:41:08,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:41:08,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:41:08,275 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:41:08,313 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:41:08,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:41:08,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:41:08,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:41:08,316 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:41:08,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:41:08,316 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:41:08,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:41:08,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:41:08,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:41:08,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:41:08,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:41:08,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:41:08,319 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:41:08,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:41:08,319 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:41:08,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:41:08,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:41:08,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:41:08,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:41:08,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:41:08,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:41:08,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:41:08,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:41:08,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:41:08,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:41:08,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:41:08,321 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:41:08,321 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:41:08,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:41:08,322 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:41:08,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:41:08,620 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:41:08,622 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:41:08,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:41:08,624 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:41:08,625 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-10-16 13:41:08,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2028142a4/c0545173555b4139a6ffdaa9f150be93/FLAG00cb63753 [2020-10-16 13:41:09,274 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:41:09,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-10-16 13:41:09,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2028142a4/c0545173555b4139a6ffdaa9f150be93/FLAG00cb63753 [2020-10-16 13:41:09,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2028142a4/c0545173555b4139a6ffdaa9f150be93 [2020-10-16 13:41:09,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:41:09,593 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:41:09,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:41:09,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:41:09,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:41:09,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:41:09" (1/1) ... [2020-10-16 13:41:09,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@633362c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:09, skipping insertion in model container [2020-10-16 13:41:09,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:41:09" (1/1) ... [2020-10-16 13:41:09,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:41:09,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:41:10,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:41:10,165 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:41:10,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:41:10,321 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:41:10,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:10 WrapperNode [2020-10-16 13:41:10,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:41:10,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:41:10,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:41:10,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:41:10,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:10" (1/1) ... [2020-10-16 13:41:10,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:10" (1/1) ... [2020-10-16 13:41:10,371 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:41:10,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:41:10,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:41:10,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:41:10,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:10" (1/1) ... [2020-10-16 13:41:10,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:10" (1/1) ... [2020-10-16 13:41:10,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:10" (1/1) ... [2020-10-16 13:41:10,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:10" (1/1) ... [2020-10-16 13:41:10,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:10" (1/1) ... [2020-10-16 13:41:10,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:10" (1/1) ... [2020-10-16 13:41:10,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:10" (1/1) ... [2020-10-16 13:41:10,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:41:10,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:41:10,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:41:10,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:41:10,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:41:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:41:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:41:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:41:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:41:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:41:10,472 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:41:10,472 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:41:10,472 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:41:10,473 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:41:10,473 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:41:10,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:41:10,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:41:10,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:41:10,476 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:41:10,844 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:41:10,845 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:41:10,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:41:10 BoogieIcfgContainer [2020-10-16 13:41:10,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:41:10,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:41:10,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:41:10,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:41:10,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:41:09" (1/3) ... [2020-10-16 13:41:10,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c629d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:41:10, skipping insertion in model container [2020-10-16 13:41:10,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:10" (2/3) ... [2020-10-16 13:41:10,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c629d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:41:10, skipping insertion in model container [2020-10-16 13:41:10,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:41:10" (3/3) ... [2020-10-16 13:41:10,856 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2020-10-16 13:41:10,868 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:41:10,868 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:41:10,879 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:41:10,880 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:41:10,906 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,906 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,906 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,907 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,907 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,908 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,908 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,908 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,909 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,909 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,909 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,909 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,910 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,910 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,910 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,911 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,911 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,911 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,915 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,916 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,916 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,916 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,922 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,923 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,923 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,923 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,925 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,926 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,926 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,926 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:41:10,928 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:41:10,941 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:41:10,961 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:41:10,962 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:41:10,962 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:41:10,962 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:41:10,962 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:41:10,962 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:41:10,963 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:41:10,963 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:41:10,976 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:41:10,977 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-16 13:41:10,980 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-16 13:41:10,982 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-16 13:41:11,023 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-16 13:41:11,024 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:41:11,028 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 13:41:11,031 INFO L117 LiptonReduction]: Number of co-enabled transitions 1178 [2020-10-16 13:41:12,240 INFO L132 LiptonReduction]: Checked pairs total: 2372 [2020-10-16 13:41:12,240 INFO L134 LiptonReduction]: Total number of compositions: 57 [2020-10-16 13:41:12,247 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 13:41:12,275 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-16 13:41:12,277 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-16 13:41:12,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:41:12,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:12,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:12,287 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:12,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:12,293 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-10-16 13:41:12,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:12,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572570766] [2020-10-16 13:41:12,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:12,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:12,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572570766] [2020-10-16 13:41:12,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:12,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:41:12,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2011098059] [2020-10-16 13:41:12,482 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:12,488 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:12,504 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:41:12,504 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:12,508 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:12,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 13:41:12,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:12,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 13:41:12,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:41:12,522 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-16 13:41:12,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:12,543 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-16 13:41:12,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 13:41:12,544 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-16 13:41:12,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:12,565 INFO L225 Difference]: With dead ends: 274 [2020-10-16 13:41:12,566 INFO L226 Difference]: Without dead ends: 226 [2020-10-16 13:41:12,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:41:12,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-16 13:41:12,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-16 13:41:12,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-16 13:41:12,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-16 13:41:12,645 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-16 13:41:12,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:12,646 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-16 13:41:12,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 13:41:12,647 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-16 13:41:12,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:41:12,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:12,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:12,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:41:12,649 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:12,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:12,649 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-10-16 13:41:12,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:12,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770022394] [2020-10-16 13:41:12,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:12,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770022394] [2020-10-16 13:41:12,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:12,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:41:12,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [141235131] [2020-10-16 13:41:12,792 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:12,793 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:12,800 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 13:41:12,800 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:12,801 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:12,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:41:12,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:12,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:41:12,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:41:12,805 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-10-16 13:41:12,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:12,847 INFO L93 Difference]: Finished difference Result 262 states and 700 transitions. [2020-10-16 13:41:12,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:41:12,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 13:41:12,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:12,851 INFO L225 Difference]: With dead ends: 262 [2020-10-16 13:41:12,852 INFO L226 Difference]: Without dead ends: 214 [2020-10-16 13:41:12,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:41:12,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-16 13:41:12,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-10-16 13:41:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-16 13:41:12,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 590 transitions. [2020-10-16 13:41:12,884 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 590 transitions. Word has length 9 [2020-10-16 13:41:12,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:12,885 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 590 transitions. [2020-10-16 13:41:12,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:41:12,885 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 590 transitions. [2020-10-16 13:41:12,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:41:12,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:12,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:12,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:41:12,890 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:12,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:12,890 INFO L82 PathProgramCache]: Analyzing trace with hash 984763373, now seen corresponding path program 1 times [2020-10-16 13:41:12,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:12,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388918401] [2020-10-16 13:41:12,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:12,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:12,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388918401] [2020-10-16 13:41:12,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:12,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:41:12,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [216269718] [2020-10-16 13:41:12,967 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:12,968 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:12,970 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-10-16 13:41:12,970 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:13,014 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:13,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:41:13,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:13,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:41:13,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:41:13,015 INFO L87 Difference]: Start difference. First operand 214 states and 590 transitions. Second operand 5 states. [2020-10-16 13:41:13,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:13,067 INFO L93 Difference]: Finished difference Result 232 states and 614 transitions. [2020-10-16 13:41:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:41:13,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-16 13:41:13,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:13,070 INFO L225 Difference]: With dead ends: 232 [2020-10-16 13:41:13,070 INFO L226 Difference]: Without dead ends: 196 [2020-10-16 13:41:13,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:41:13,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-16 13:41:13,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-10-16 13:41:13,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-16 13:41:13,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-10-16 13:41:13,084 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-10-16 13:41:13,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:13,084 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-10-16 13:41:13,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:41:13,085 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-10-16 13:41:13,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:41:13,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:13,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:13,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:41:13,087 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:13,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:13,087 INFO L82 PathProgramCache]: Analyzing trace with hash 462854661, now seen corresponding path program 1 times [2020-10-16 13:41:13,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:13,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041073456] [2020-10-16 13:41:13,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:13,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041073456] [2020-10-16 13:41:13,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:13,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:41:13,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [473644643] [2020-10-16 13:41:13,161 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:13,162 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:13,164 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-10-16 13:41:13,164 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:13,203 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:13,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 13:41:13,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:13,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 13:41:13,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-16 13:41:13,205 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 6 states. [2020-10-16 13:41:13,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:13,308 INFO L93 Difference]: Finished difference Result 255 states and 672 transitions. [2020-10-16 13:41:13,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 13:41:13,309 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-16 13:41:13,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:13,311 INFO L225 Difference]: With dead ends: 255 [2020-10-16 13:41:13,311 INFO L226 Difference]: Without dead ends: 150 [2020-10-16 13:41:13,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:41:13,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-16 13:41:13,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-16 13:41:13,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-16 13:41:13,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-10-16 13:41:13,320 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-10-16 13:41:13,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:13,320 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-10-16 13:41:13,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 13:41:13,320 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-10-16 13:41:13,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:41:13,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:13,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:13,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:41:13,322 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:13,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:13,323 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-10-16 13:41:13,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:13,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240000125] [2020-10-16 13:41:13,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:13,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:13,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240000125] [2020-10-16 13:41:13,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:13,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:41:13,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [708281325] [2020-10-16 13:41:13,392 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:13,393 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:13,396 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 46 transitions. [2020-10-16 13:41:13,396 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:13,420 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:41:13,495 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:41:13,512 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:41:13,533 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:41:13,551 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:41:13,576 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3259#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-16 13:41:13,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:41:13,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:13,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:41:13,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:41:13,577 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 5 states. [2020-10-16 13:41:13,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:13,624 INFO L93 Difference]: Finished difference Result 128 states and 285 transitions. [2020-10-16 13:41:13,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:41:13,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-16 13:41:13,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:13,625 INFO L225 Difference]: With dead ends: 128 [2020-10-16 13:41:13,626 INFO L226 Difference]: Without dead ends: 92 [2020-10-16 13:41:13,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:41:13,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-16 13:41:13,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-16 13:41:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-16 13:41:13,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-10-16 13:41:13,631 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 12 [2020-10-16 13:41:13,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:13,631 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-10-16 13:41:13,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:41:13,631 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-10-16 13:41:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:41:13,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:13,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:13,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:41:13,633 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:13,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:13,634 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-10-16 13:41:13,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:13,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329038050] [2020-10-16 13:41:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:13,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:13,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329038050] [2020-10-16 13:41:13,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:13,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:41:13,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [766760864] [2020-10-16 13:41:13,682 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:13,683 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:13,685 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 13:41:13,686 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:13,688 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:13,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:41:13,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:13,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:41:13,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:41:13,690 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-10-16 13:41:13,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:13,708 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-10-16 13:41:13,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:41:13,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 13:41:13,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:13,709 INFO L225 Difference]: With dead ends: 120 [2020-10-16 13:41:13,709 INFO L226 Difference]: Without dead ends: 94 [2020-10-16 13:41:13,710 INFO L677 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 [2020-10-16 13:41:13,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-16 13:41:13,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-10-16 13:41:13,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-16 13:41:13,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-10-16 13:41:13,714 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-10-16 13:41:13,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:13,714 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-10-16 13:41:13,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:41:13,714 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-10-16 13:41:13,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:41:13,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:13,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:13,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:41:13,716 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:13,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:13,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-10-16 13:41:13,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:13,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74473614] [2020-10-16 13:41:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:13,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74473614] [2020-10-16 13:41:13,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:13,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:41:13,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1371406834] [2020-10-16 13:41:13,801 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:13,804 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:13,812 INFO L258 McrAutomatonBuilder]: Finished intersection with 44 states and 79 transitions. [2020-10-16 13:41:13,813 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:13,927 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:41:13,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:41:13,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:13,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:41:13,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:41:13,928 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 5 states. [2020-10-16 13:41:13,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:13,957 INFO L93 Difference]: Finished difference Result 113 states and 209 transitions. [2020-10-16 13:41:13,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:41:13,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 13:41:13,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:13,959 INFO L225 Difference]: With dead ends: 113 [2020-10-16 13:41:13,959 INFO L226 Difference]: Without dead ends: 70 [2020-10-16 13:41:13,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:41:13,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-16 13:41:13,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-16 13:41:13,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-16 13:41:13,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2020-10-16 13:41:13,962 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 15 [2020-10-16 13:41:13,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:13,963 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2020-10-16 13:41:13,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:41:13,963 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2020-10-16 13:41:13,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:41:13,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:41:13,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:41:13,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:41:13,965 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:41:13,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:41:13,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-10-16 13:41:13,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:41:13,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317675857] [2020-10-16 13:41:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:41:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:41:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:41:14,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317675857] [2020-10-16 13:41:14,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:41:14,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:41:14,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [756181859] [2020-10-16 13:41:14,026 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:41:14,028 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:41:14,032 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 63 transitions. [2020-10-16 13:41:14,032 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:41:14,037 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:41:14,085 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [4148#(not (= 3 ~__unbuffered_cnt~0)), 4149#(not (= ~__unbuffered_cnt~0 2)), 4150#(not (= ~__unbuffered_cnt~0 1)), 4151#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:41:14,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 13:41:14,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:41:14,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 13:41:14,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-16 13:41:14,086 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand 10 states. [2020-10-16 13:41:14,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:41:14,118 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-10-16 13:41:14,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:41:14,118 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-10-16 13:41:14,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:41:14,118 INFO L225 Difference]: With dead ends: 58 [2020-10-16 13:41:14,119 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:41:14,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:41:14,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:41:14,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:41:14,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:41:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:41:14,120 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-16 13:41:14,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:41:14,120 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:41:14,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 13:41:14,120 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:41:14,121 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:41:14,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:41:14,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:41:14 BasicIcfg [2020-10-16 13:41:14,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:41:14,127 INFO L168 Benchmark]: Toolchain (without parser) took 4533.78 ms. Allocated memory was 148.9 MB in the beginning and 245.9 MB in the end (delta: 97.0 MB). Free memory was 103.6 MB in the beginning and 110.5 MB in the end (delta: -6.9 MB). Peak memory consumption was 90.1 MB. Max. memory is 7.1 GB. [2020-10-16 13:41:14,128 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 13:41:14,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 728.66 ms. Allocated memory was 148.9 MB in the beginning and 204.5 MB in the end (delta: 55.6 MB). Free memory was 103.4 MB in the beginning and 159.3 MB in the end (delta: -56.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:41:14,130 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.00 ms. Allocated memory is still 204.5 MB. Free memory was 158.7 MB in the beginning and 156.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:41:14,131 INFO L168 Benchmark]: Boogie Preprocessor took 23.90 ms. Allocated memory is still 204.5 MB. Free memory was 156.7 MB in the beginning and 155.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:41:14,131 INFO L168 Benchmark]: RCFGBuilder took 452.35 ms. Allocated memory is still 204.5 MB. Free memory was 155.4 MB in the beginning and 133.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:41:14,132 INFO L168 Benchmark]: TraceAbstraction took 3275.72 ms. Allocated memory was 204.5 MB in the beginning and 245.9 MB in the end (delta: 41.4 MB). Free memory was 132.5 MB in the beginning and 112.4 MB in the end (delta: 20.1 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:41:14,137 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 728.66 ms. Allocated memory was 148.9 MB in the beginning and 204.5 MB in the end (delta: 55.6 MB). Free memory was 103.4 MB in the beginning and 159.3 MB in the end (delta: -56.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.00 ms. Allocated memory is still 204.5 MB. Free memory was 158.7 MB in the beginning and 156.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.90 ms. Allocated memory is still 204.5 MB. Free memory was 156.7 MB in the beginning and 155.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 452.35 ms. Allocated memory is still 204.5 MB. Free memory was 155.4 MB in the beginning and 133.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3275.72 ms. Allocated memory was 204.5 MB in the beginning and 245.9 MB in the end (delta: 41.4 MB). Free memory was 132.5 MB in the beginning and 112.4 MB in the end (delta: 20.1 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 601 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 25 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 76 PlacesBefore, 31 PlacesAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 57 TotalNumberOfCompositions, 2372 MoverChecksTotal - 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 161 SDtfs, 188 SDslu, 290 SDs, 0 SdLazy, 150 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 69 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 3049 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...