/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 0.1.25-507b705 [2020-09-11 23:49:31,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:49:31,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:49:31,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:49:31,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:49:31,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:49:31,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:49:31,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:49:31,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:49:31,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:49:31,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:49:31,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:49:31,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:49:31,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:49:31,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:49:31,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:49:31,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:49:31,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:49:31,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:49:31,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:49:31,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:49:31,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:49:31,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:49:31,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:49:31,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 23:49:31,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 23:49:31,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 23:49:31,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 23:49:31,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 23:49:31,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 23:49:31,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:49:31,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:49:31,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:49:31,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:49:31,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:49:31,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:49:31,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:49:31,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:49:31,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:49:31,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:49:31,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:49:31,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-11 23:49:31,383 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:49:31,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:49:31,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:49:31,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:49:31,386 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:49:31,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:49:31,386 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:49:31,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:49:31,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:49:31,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:49:31,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:49:31,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:49:31,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:49:31,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:49:31,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:49:31,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:49:31,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:49:31,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:49:31,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:49:31,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:49:31,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:49:31,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:49:31,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:49:31,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:49:31,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:49:31,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:49:31,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:49:31,391 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:49:31,391 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:49:31,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:49:31,393 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:49:31,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:49:31,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:49:31,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:49:31,890 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:49:31,890 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:49:31,892 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-09-11 23:49:31,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd89614df/7bc58f4d7f144f26a9a10ac670cfdc2d/FLAGdb3f94573 [2020-09-11 23:49:32,609 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:49:32,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-09-11 23:49:32,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd89614df/7bc58f4d7f144f26a9a10ac670cfdc2d/FLAGdb3f94573 [2020-09-11 23:49:32,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd89614df/7bc58f4d7f144f26a9a10ac670cfdc2d [2020-09-11 23:49:32,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:49:32,896 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:49:32,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:49:32,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:49:32,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:49:32,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:49:32" (1/1) ... [2020-09-11 23:49:32,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14df979a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:32, skipping insertion in model container [2020-09-11 23:49:32,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:49:32" (1/1) ... [2020-09-11 23:49:32,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:49:32,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:49:33,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:49:33,588 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:49:33,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:49:33,768 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:49:33,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:33 WrapperNode [2020-09-11 23:49:33,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:49:33,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:49:33,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:49:33,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:49:33,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:33" (1/1) ... [2020-09-11 23:49:33,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:33" (1/1) ... [2020-09-11 23:49:33,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:49:33,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:49:33,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:49:33,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:49:33,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:33" (1/1) ... [2020-09-11 23:49:33,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:33" (1/1) ... [2020-09-11 23:49:33,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:33" (1/1) ... [2020-09-11 23:49:33,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:33" (1/1) ... [2020-09-11 23:49:33,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:33" (1/1) ... [2020-09-11 23:49:33,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:33" (1/1) ... [2020-09-11 23:49:33,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:33" (1/1) ... [2020-09-11 23:49:33,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:49:33,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:49:33,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:49:33,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:49:33,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:49:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:49:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:49:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:49:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:49:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:49:33,960 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:49:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:49:33,961 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:49:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:49:33,961 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:49:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:49:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:49:33,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:49:33,964 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 23:49:34,379 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:49:34,380 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:49:34,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:49:34 BoogieIcfgContainer [2020-09-11 23:49:34,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:49:34,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:49:34,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:49:34,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:49:34,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:49:32" (1/3) ... [2020-09-11 23:49:34,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9ba25e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:49:34, skipping insertion in model container [2020-09-11 23:49:34,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:33" (2/3) ... [2020-09-11 23:49:34,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9ba25e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:49:34, skipping insertion in model container [2020-09-11 23:49:34,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:49:34" (3/3) ... [2020-09-11 23:49:34,396 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2020-09-11 23:49:34,408 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:49:34,408 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:49:34,420 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:49:34,421 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:49:34,449 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,449 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,450 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,450 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,450 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,451 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,452 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,452 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,452 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,452 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,453 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,453 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,453 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,454 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,454 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,454 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,460 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,460 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,471 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,471 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,472 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,472 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,475 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,475 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,475 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,476 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:34,498 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 23:49:34,522 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:49:34,522 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:49:34,522 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:49:34,522 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:49:34,522 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:49:34,523 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:49:34,523 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:49:34,523 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:49:34,542 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-09-11 23:49:34,544 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-11 23:49:34,598 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-11 23:49:34,598 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:49:34,604 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. [2020-09-11 23:49:34,607 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-11 23:49:34,628 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-11 23:49:34,628 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:49:34,629 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. [2020-09-11 23:49:34,631 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-09-11 23:49:34,633 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:49:35,964 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-09-11 23:49:35,965 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-11 23:49:35,970 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 23:49:36,007 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-09-11 23:49:36,010 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-09-11 23:49:36,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 23:49:36,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:49:36,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:49:36,022 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:49:36,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:49:36,030 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-09-11 23:49:36,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:49:36,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89301086] [2020-09-11 23:49:36,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:49:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:49:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:49:36,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89301086] [2020-09-11 23:49:36,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:49:36,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:49:36,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2017892615] [2020-09-11 23:49:36,269 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:49:36,274 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:49:36,289 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 23:49:36,289 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:49:36,291 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:49:36,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-11 23:49:36,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:49:36,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-11 23:49:36,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 23:49:36,315 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-09-11 23:49:36,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:49:36,339 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-09-11 23:49:36,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-11 23:49:36,341 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-11 23:49:36,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:49:36,360 INFO L225 Difference]: With dead ends: 274 [2020-09-11 23:49:36,360 INFO L226 Difference]: Without dead ends: 226 [2020-09-11 23:49:36,362 INFO L675 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 [2020-09-11 23:49:36,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-11 23:49:36,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-11 23:49:36,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-11 23:49:36,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-09-11 23:49:36,452 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-09-11 23:49:36,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:49:36,454 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-09-11 23:49:36,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-11 23:49:36,454 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-09-11 23:49:36,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 23:49:36,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:49:36,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:49:36,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:49:36,457 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:49:36,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:49:36,457 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-09-11 23:49:36,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:49:36,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156584810] [2020-09-11 23:49:36,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:49:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:49:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:49:36,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156584810] [2020-09-11 23:49:36,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:49:36,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:49:36,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1178846589] [2020-09-11 23:49:36,644 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:49:36,645 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:49:36,647 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-11 23:49:36,647 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:49:36,648 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:49:36,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:49:36,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:49:36,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:49:36,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:49:36,651 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-09-11 23:49:36,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:49:36,690 INFO L93 Difference]: Finished difference Result 262 states and 700 transitions. [2020-09-11 23:49:36,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:49:36,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 23:49:36,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:49:36,694 INFO L225 Difference]: With dead ends: 262 [2020-09-11 23:49:36,694 INFO L226 Difference]: Without dead ends: 214 [2020-09-11 23:49:36,695 INFO L675 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 [2020-09-11 23:49:36,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-11 23:49:36,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-09-11 23:49:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-11 23:49:36,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 590 transitions. [2020-09-11 23:49:36,717 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 590 transitions. Word has length 9 [2020-09-11 23:49:36,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:49:36,718 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 590 transitions. [2020-09-11 23:49:36,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:49:36,718 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 590 transitions. [2020-09-11 23:49:36,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 23:49:36,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:49:36,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:49:36,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:49:36,720 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:49:36,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:49:36,721 INFO L82 PathProgramCache]: Analyzing trace with hash 984763373, now seen corresponding path program 1 times [2020-09-11 23:49:36,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:49:36,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560065625] [2020-09-11 23:49:36,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:49:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:49:36,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:49:36,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560065625] [2020-09-11 23:49:36,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:49:36,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:49:36,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2035069810] [2020-09-11 23:49:36,826 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:49:36,827 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:49:36,829 INFO L274 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-09-11 23:49:36,829 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:49:36,879 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:49:36,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:49:36,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:49:36,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:49:36,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:49:36,881 INFO L87 Difference]: Start difference. First operand 214 states and 590 transitions. Second operand 5 states. [2020-09-11 23:49:36,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:49:36,940 INFO L93 Difference]: Finished difference Result 232 states and 614 transitions. [2020-09-11 23:49:36,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:49:36,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-11 23:49:36,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:49:36,942 INFO L225 Difference]: With dead ends: 232 [2020-09-11 23:49:36,943 INFO L226 Difference]: Without dead ends: 196 [2020-09-11 23:49:36,943 INFO L675 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 [2020-09-11 23:49:36,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-11 23:49:36,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-09-11 23:49:36,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-11 23:49:36,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-09-11 23:49:36,958 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-09-11 23:49:36,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:49:36,959 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-09-11 23:49:36,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:49:36,959 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-09-11 23:49:36,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 23:49:36,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:49:36,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:49:36,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:49:36,961 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:49:36,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:49:36,962 INFO L82 PathProgramCache]: Analyzing trace with hash 462854661, now seen corresponding path program 1 times [2020-09-11 23:49:36,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:49:36,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217773883] [2020-09-11 23:49:36,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:49:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:49:37,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:49:37,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217773883] [2020-09-11 23:49:37,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:49:37,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:49:37,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1777875458] [2020-09-11 23:49:37,053 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:49:37,054 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:49:37,056 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-09-11 23:49:37,056 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:49:37,096 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:49:37,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 23:49:37,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:49:37,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 23:49:37,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-11 23:49:37,098 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 6 states. [2020-09-11 23:49:37,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:49:37,206 INFO L93 Difference]: Finished difference Result 255 states and 672 transitions. [2020-09-11 23:49:37,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-11 23:49:37,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-09-11 23:49:37,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:49:37,208 INFO L225 Difference]: With dead ends: 255 [2020-09-11 23:49:37,209 INFO L226 Difference]: Without dead ends: 150 [2020-09-11 23:49:37,209 INFO L675 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 [2020-09-11 23:49:37,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-11 23:49:37,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-09-11 23:49:37,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-11 23:49:37,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-09-11 23:49:37,219 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-09-11 23:49:37,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:49:37,219 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-09-11 23:49:37,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 23:49:37,219 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-09-11 23:49:37,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 23:49:37,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:49:37,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:49:37,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:49:37,221 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:49:37,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:49:37,222 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-09-11 23:49:37,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:49:37,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832975942] [2020-09-11 23:49:37,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:49:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:49:37,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:49:37,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832975942] [2020-09-11 23:49:37,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:49:37,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:49:37,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [388308208] [2020-09-11 23:49:37,310 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:49:37,312 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:49:37,315 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 46 transitions. [2020-09-11 23:49:37,315 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:49:37,344 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:49:37,372 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:49:37,438 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:49:37,453 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:49:37,494 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:49:37,539 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:49:37,564 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:49:37,578 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:49:37,583 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3259#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-11 23:49:37,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:49:37,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:49:37,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:49:37,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:49:37,585 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 5 states. [2020-09-11 23:49:37,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:49:37,651 INFO L93 Difference]: Finished difference Result 128 states and 285 transitions. [2020-09-11 23:49:37,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:49:37,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-11 23:49:37,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:49:37,653 INFO L225 Difference]: With dead ends: 128 [2020-09-11 23:49:37,653 INFO L226 Difference]: Without dead ends: 92 [2020-09-11 23:49:37,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:49:37,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-11 23:49:37,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-09-11 23:49:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-11 23:49:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-09-11 23:49:37,659 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 12 [2020-09-11 23:49:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:49:37,659 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-09-11 23:49:37,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:49:37,659 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-09-11 23:49:37,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:49:37,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:49:37,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:49:37,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:49:37,661 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:49:37,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:49:37,661 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-09-11 23:49:37,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:49:37,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092111007] [2020-09-11 23:49:37,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:49:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:49:37,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:49:37,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092111007] [2020-09-11 23:49:37,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:49:37,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:49:37,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1018390872] [2020-09-11 23:49:37,727 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:49:37,728 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:49:37,731 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-09-11 23:49:37,731 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:49:37,734 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:49:37,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:49:37,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:49:37,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:49:37,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:49:37,736 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-09-11 23:49:37,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:49:37,757 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-09-11 23:49:37,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:49:37,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 23:49:37,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:49:37,759 INFO L225 Difference]: With dead ends: 120 [2020-09-11 23:49:37,759 INFO L226 Difference]: Without dead ends: 94 [2020-09-11 23:49:37,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:49:37,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-11 23:49:37,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-09-11 23:49:37,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-11 23:49:37,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-09-11 23:49:37,764 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-09-11 23:49:37,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:49:37,764 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-09-11 23:49:37,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:49:37,765 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-09-11 23:49:37,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:49:37,766 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:49:37,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:49:37,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 23:49:37,766 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:49:37,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:49:37,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-09-11 23:49:37,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:49:37,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884196776] [2020-09-11 23:49:37,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:49:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:49:37,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:49:37,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884196776] [2020-09-11 23:49:37,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:49:37,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:49:37,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1851626487] [2020-09-11 23:49:37,876 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:49:37,878 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:49:37,883 INFO L274 McrAutomatonBuilder]: Finished intersection with 44 states and 79 transitions. [2020-09-11 23:49:37,884 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:49:38,024 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:49:38,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:49:38,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:49:38,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:49:38,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:49:38,025 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 5 states. [2020-09-11 23:49:38,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:49:38,058 INFO L93 Difference]: Finished difference Result 113 states and 209 transitions. [2020-09-11 23:49:38,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:49:38,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-11 23:49:38,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:49:38,059 INFO L225 Difference]: With dead ends: 113 [2020-09-11 23:49:38,059 INFO L226 Difference]: Without dead ends: 70 [2020-09-11 23:49:38,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:49:38,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-11 23:49:38,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-09-11 23:49:38,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-11 23:49:38,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2020-09-11 23:49:38,063 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 15 [2020-09-11 23:49:38,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:49:38,063 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2020-09-11 23:49:38,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:49:38,064 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2020-09-11 23:49:38,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:49:38,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:49:38,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:49:38,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 23:49:38,065 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:49:38,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:49:38,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-09-11 23:49:38,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:49:38,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18954440] [2020-09-11 23:49:38,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:49:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:49:38,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:49:38,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18954440] [2020-09-11 23:49:38,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:49:38,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 23:49:38,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1712725740] [2020-09-11 23:49:38,141 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:49:38,142 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:49:38,147 INFO L274 McrAutomatonBuilder]: Finished intersection with 38 states and 63 transitions. [2020-09-11 23:49:38,147 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:49:38,154 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:49:38,221 INFO L399 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)] [2020-09-11 23:49:38,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-11 23:49:38,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:49:38,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-11 23:49:38,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-11 23:49:38,223 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand 10 states. [2020-09-11 23:49:38,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:49:38,258 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-09-11 23:49:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 23:49:38,258 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-09-11 23:49:38,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:49:38,259 INFO L225 Difference]: With dead ends: 58 [2020-09-11 23:49:38,259 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:49:38,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-11 23:49:38,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:49:38,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:49:38,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:49:38,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:49:38,260 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-09-11 23:49:38,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:49:38,261 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:49:38,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-11 23:49:38,261 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:49:38,261 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:49:38,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 23:49:38,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:49:38 BasicIcfg [2020-09-11 23:49:38,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:49:38,276 INFO L168 Benchmark]: Toolchain (without parser) took 5375.92 ms. Allocated memory was 147.3 MB in the beginning and 246.4 MB in the end (delta: 99.1 MB). Free memory was 102.2 MB in the beginning and 94.0 MB in the end (delta: 8.2 MB). Peak memory consumption was 107.3 MB. Max. memory is 7.1 GB. [2020-09-11 23:49:38,277 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:49:38,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 871.85 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 101.6 MB in the beginning and 163.0 MB in the end (delta: -61.4 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-09-11 23:49:38,280 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.96 ms. Allocated memory is still 205.0 MB. Free memory was 163.0 MB in the beginning and 160.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-11 23:49:38,280 INFO L168 Benchmark]: Boogie Preprocessor took 33.06 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. [2020-09-11 23:49:38,283 INFO L168 Benchmark]: RCFGBuilder took 525.40 ms. Allocated memory is still 205.0 MB. Free memory was 159.1 MB in the beginning and 137.4 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-09-11 23:49:38,284 INFO L168 Benchmark]: TraceAbstraction took 3879.40 ms. Allocated memory was 205.0 MB in the beginning and 246.4 MB in the end (delta: 41.4 MB). Free memory was 136.7 MB in the beginning and 94.0 MB in the end (delta: 42.8 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. [2020-09-11 23:49:38,296 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 871.85 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 101.6 MB in the beginning and 163.0 MB in the end (delta: -61.4 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.96 ms. Allocated memory is still 205.0 MB. Free memory was 163.0 MB in the beginning and 160.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.06 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 525.40 ms. Allocated memory is still 205.0 MB. Free memory was 159.1 MB in the beginning and 137.4 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3879.40 ms. Allocated memory was 205.0 MB in the beginning and 246.4 MB in the end (delta: 41.4 MB). Free memory was 136.7 MB in the beginning and 94.0 MB in the end (delta: 42.8 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 588 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2244 CheckedPairsTotal, 56 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 161 SDtfs, 188 SDslu, 290 SDs, 0 SdLazy, 150 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 115 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 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, 0.5s 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...