/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:30:14,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:30:14,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:30:14,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:30:14,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:30:14,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:30:14,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:30:14,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:30:14,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:30:14,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:30:14,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:30:14,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:30:14,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:30:14,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:30:14,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:30:14,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:30:14,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:30:14,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:30:14,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:30:14,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:30:14,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:30:14,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:30:15,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:30:15,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:30:15,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:30:15,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:30:15,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:30:15,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:30:15,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:30:15,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:30:15,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:30:15,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:30:15,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:30:15,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:30:15,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:30:15,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:30:15,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:30:15,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:30:15,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:30:15,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:30:15,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:30:15,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf [2020-04-18 19:30:15,046 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:30:15,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:30:15,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:30:15,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:30:15,048 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:30:15,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:30:15,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:30:15,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:30:15,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:30:15,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:30:15,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:30:15,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:30:15,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:30:15,050 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:30:15,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:30:15,050 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:30:15,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:30:15,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:30:15,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:30:15,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:30:15,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:30:15,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:30:15,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:30:15,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:30:15,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:30:15,052 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:30:15,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:30:15,052 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:30:15,053 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:30:15,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:30:15,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:30:15,361 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:30:15,380 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:30:15,384 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:30:15,385 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:30:15,386 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:30:15,387 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-04-18 19:30:15,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ddfee4e9/56d0b7f3f86d453d86998b415a0808ca/FLAG025029ce8 [2020-04-18 19:30:16,039 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:30:16,040 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-04-18 19:30:16,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ddfee4e9/56d0b7f3f86d453d86998b415a0808ca/FLAG025029ce8 [2020-04-18 19:30:16,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ddfee4e9/56d0b7f3f86d453d86998b415a0808ca [2020-04-18 19:30:16,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:30:16,391 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:30:16,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:30:16,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:30:16,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:30:16,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:30:16" (1/1) ... [2020-04-18 19:30:16,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a692fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:16, skipping insertion in model container [2020-04-18 19:30:16,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:30:16" (1/1) ... [2020-04-18 19:30:16,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:30:16,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:30:16,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:30:16,990 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:30:17,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:30:17,110 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:30:17,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:17 WrapperNode [2020-04-18 19:30:17,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:30:17,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:30:17,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:30:17,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:30:17,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:17" (1/1) ... [2020-04-18 19:30:17,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:17" (1/1) ... [2020-04-18 19:30:17,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:30:17,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:30:17,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:30:17,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:30:17,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:17" (1/1) ... [2020-04-18 19:30:17,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:17" (1/1) ... [2020-04-18 19:30:17,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:17" (1/1) ... [2020-04-18 19:30:17,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:17" (1/1) ... [2020-04-18 19:30:17,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:17" (1/1) ... [2020-04-18 19:30:17,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:17" (1/1) ... [2020-04-18 19:30:17,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:17" (1/1) ... [2020-04-18 19:30:17,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:30:17,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:30:17,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:30:17,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:30:17,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:30:17,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:30:17,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:30:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:30:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:30:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:30:17,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:30:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:30:17,258 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:30:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:30:17,259 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:30:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:30:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:30:17,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:30:17,263 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 19:30:17,620 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:30:17,621 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:30:17,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:30:17 BoogieIcfgContainer [2020-04-18 19:30:17,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:30:17,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:30:17,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:30:17,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:30:17,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:30:16" (1/3) ... [2020-04-18 19:30:17,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306cb968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:30:17, skipping insertion in model container [2020-04-18 19:30:17,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:30:17" (2/3) ... [2020-04-18 19:30:17,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306cb968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:30:17, skipping insertion in model container [2020-04-18 19:30:17,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:30:17" (3/3) ... [2020-04-18 19:30:17,638 INFO L109 eAbstractionObserver]: Analyzing ICFG safe012_tso.oepc.i [2020-04-18 19:30:17,649 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:30:17,649 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:30:17,657 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:30:17,658 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:30:17,689 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,689 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,690 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,692 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,693 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,693 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,694 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,694 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,694 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,694 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,695 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,695 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,696 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,696 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,696 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,696 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,697 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,697 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,701 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,702 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,702 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,702 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,708 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,708 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,708 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,709 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,712 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,712 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,713 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,713 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:30:17,729 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:30:17,749 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:30:17,749 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:30:17,749 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:30:17,750 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:30:17,750 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:30:17,750 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:30:17,750 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:30:17,750 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:30:17,764 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 19:30:18,311 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8473 states. [2020-04-18 19:30:18,314 INFO L276 IsEmpty]: Start isEmpty. Operand 8473 states. [2020-04-18 19:30:18,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:30:18,353 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:30:18,354 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:30:18,355 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:30:18,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:18,362 INFO L82 PathProgramCache]: Analyzing trace with hash 642340523, now seen corresponding path program 1 times [2020-04-18 19:30:18,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:30:18,371 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1029260589] [2020-04-18 19:30:18,389 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:18,408 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 37 transitions. [2020-04-18 19:30:18,411 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-04-18 19:30:18,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:30:18,412 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:30:18,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:18,413 INFO L82 PathProgramCache]: Analyzing trace with hash 642340523, now seen corresponding path program 2 times [2020-04-18 19:30:18,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:18,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889382309] [2020-04-18 19:30:18,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:18,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889382309] [2020-04-18 19:30:18,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:18,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:30:18,994 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:18,999 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:19,007 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 37 transitions. [2020-04-18 19:30:19,008 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:19,060 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:30:19,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:30:19,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:30:19,067 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 6 states. [2020-04-18 19:30:19,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:19,191 INFO L93 Difference]: Finished difference Result 38 states and 37 transitions. [2020-04-18 19:30:19,192 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 37 transitions. [2020-04-18 19:30:19,193 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:19,193 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1029260589] [2020-04-18 19:30:19,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:30:19,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:30:19,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1029260589] [2020-04-18 19:30:19,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:30:19,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:30:19,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:30:19,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:30:19,205 INFO L87 Difference]: Start difference. First operand 8473 states. Second operand 6 states. [2020-04-18 19:30:19,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:19,531 INFO L93 Difference]: Finished difference Result 12827 states and 44765 transitions. [2020-04-18 19:30:19,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:30:19,533 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-04-18 19:30:19,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:30:19,598 INFO L225 Difference]: With dead ends: 12827 [2020-04-18 19:30:19,598 INFO L226 Difference]: Without dead ends: 4532 [2020-04-18 19:30:19,602 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:30:19,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4532 states. [2020-04-18 19:30:19,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4532 to 4532. [2020-04-18 19:30:19,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4532 states. [2020-04-18 19:30:19,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 15535 transitions. [2020-04-18 19:30:19,861 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 15535 transitions. Word has length 37 [2020-04-18 19:30:19,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:30:19,863 INFO L479 AbstractCegarLoop]: Abstraction has 4532 states and 15535 transitions. [2020-04-18 19:30:19,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:30:19,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 15535 transitions. [2020-04-18 19:30:19,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:30:19,871 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:30:19,871 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:30:19,872 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:30:19,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:19,928 INFO L82 PathProgramCache]: Analyzing trace with hash 240380524, now seen corresponding path program 1 times [2020-04-18 19:30:19,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:30:19,929 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [513318216] [2020-04-18 19:30:19,931 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:19,933 INFO L259 McrAutomatonBuilder]: Finished intersection with 80 states and 119 transitions. [2020-04-18 19:30:19,934 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-04-18 19:30:19,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:30:19,934 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:30:19,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:19,935 INFO L82 PathProgramCache]: Analyzing trace with hash 240380524, now seen corresponding path program 2 times [2020-04-18 19:30:19,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:19,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115899429] [2020-04-18 19:30:19,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:20,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:20,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115899429] [2020-04-18 19:30:20,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:20,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:20,152 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:20,156 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:20,163 INFO L259 McrAutomatonBuilder]: Finished intersection with 68 states and 95 transitions. [2020-04-18 19:30:20,163 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:20,211 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:30:20,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:30:20,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:30:20,212 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 7 states. [2020-04-18 19:30:20,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:20,366 INFO L93 Difference]: Finished difference Result 80 states and 119 transitions. [2020-04-18 19:30:20,366 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 119 transitions. [2020-04-18 19:30:20,367 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:20,367 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [513318216] [2020-04-18 19:30:20,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:30:20,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:30:20,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [513318216] [2020-04-18 19:30:20,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:30:20,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:30:20,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:30:20,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:30:20,370 INFO L87 Difference]: Start difference. First operand 4532 states and 15535 transitions. Second operand 7 states. [2020-04-18 19:30:20,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:20,727 INFO L93 Difference]: Finished difference Result 6023 states and 20530 transitions. [2020-04-18 19:30:20,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:30:20,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-04-18 19:30:20,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:30:20,772 INFO L225 Difference]: With dead ends: 6023 [2020-04-18 19:30:20,772 INFO L226 Difference]: Without dead ends: 4903 [2020-04-18 19:30:20,784 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:30:20,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4903 states. [2020-04-18 19:30:21,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4903 to 4693. [2020-04-18 19:30:21,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2020-04-18 19:30:21,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 16072 transitions. [2020-04-18 19:30:21,048 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 16072 transitions. Word has length 39 [2020-04-18 19:30:21,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:30:21,049 INFO L479 AbstractCegarLoop]: Abstraction has 4693 states and 16072 transitions. [2020-04-18 19:30:21,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:30:21,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 16072 transitions. [2020-04-18 19:30:21,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:30:21,059 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:30:21,060 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:30:21,060 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:30:21,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:21,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1921001132, now seen corresponding path program 1 times [2020-04-18 19:30:21,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:30:21,061 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1690166148] [2020-04-18 19:30:21,062 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:21,065 INFO L259 McrAutomatonBuilder]: Finished intersection with 64 states and 87 transitions. [2020-04-18 19:30:21,065 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-04-18 19:30:21,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:30:21,066 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:30:21,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:21,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1921001132, now seen corresponding path program 2 times [2020-04-18 19:30:21,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:21,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516415673] [2020-04-18 19:30:21,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:21,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:21,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516415673] [2020-04-18 19:30:21,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:21,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:21,221 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:21,224 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:21,229 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 63 transitions. [2020-04-18 19:30:21,230 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:21,286 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:30:21,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:30:21,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:30:21,287 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 7 states. [2020-04-18 19:30:21,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:21,345 INFO L93 Difference]: Finished difference Result 64 states and 87 transitions. [2020-04-18 19:30:21,345 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 87 transitions. [2020-04-18 19:30:21,346 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:21,346 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1690166148] [2020-04-18 19:30:21,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:30:21,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:30:21,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1690166148] [2020-04-18 19:30:21,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:30:21,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:30:21,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:30:21,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:30:21,348 INFO L87 Difference]: Start difference. First operand 4693 states and 16072 transitions. Second operand 7 states. [2020-04-18 19:30:21,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:21,475 INFO L93 Difference]: Finished difference Result 5253 states and 17805 transitions. [2020-04-18 19:30:21,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:30:21,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-04-18 19:30:21,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:30:21,512 INFO L225 Difference]: With dead ends: 5253 [2020-04-18 19:30:21,512 INFO L226 Difference]: Without dead ends: 4273 [2020-04-18 19:30:21,512 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:30:21,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4273 states. [2020-04-18 19:30:21,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4273 to 4273. [2020-04-18 19:30:21,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4273 states. [2020-04-18 19:30:21,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4273 states to 4273 states and 14536 transitions. [2020-04-18 19:30:21,666 INFO L78 Accepts]: Start accepts. Automaton has 4273 states and 14536 transitions. Word has length 39 [2020-04-18 19:30:21,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:30:21,666 INFO L479 AbstractCegarLoop]: Abstraction has 4273 states and 14536 transitions. [2020-04-18 19:30:21,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:30:21,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4273 states and 14536 transitions. [2020-04-18 19:30:21,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:30:21,677 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:30:21,677 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:30:21,678 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:30:21,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:21,781 INFO L82 PathProgramCache]: Analyzing trace with hash -195961242, now seen corresponding path program 1 times [2020-04-18 19:30:21,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:30:21,782 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1145050284] [2020-04-18 19:30:21,783 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:21,786 INFO L259 McrAutomatonBuilder]: Finished intersection with 101 states and 160 transitions. [2020-04-18 19:30:21,786 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-04-18 19:30:21,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:30:21,787 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:30:21,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:21,788 INFO L82 PathProgramCache]: Analyzing trace with hash -195961242, now seen corresponding path program 2 times [2020-04-18 19:30:21,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:21,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96514729] [2020-04-18 19:30:21,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:21,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:21,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96514729] [2020-04-18 19:30:21,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:21,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:30:21,964 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:21,968 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:21,975 INFO L259 McrAutomatonBuilder]: Finished intersection with 83 states and 124 transitions. [2020-04-18 19:30:21,976 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:22,092 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 19:30:22,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:30:22,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:30:22,095 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 9 states. [2020-04-18 19:30:22,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:22,194 INFO L93 Difference]: Finished difference Result 101 states and 160 transitions. [2020-04-18 19:30:22,195 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 160 transitions. [2020-04-18 19:30:22,195 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:22,195 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1145050284] [2020-04-18 19:30:22,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:30:22,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:30:22,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1145050284] [2020-04-18 19:30:22,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 19:30:22,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:30:22,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:30:22,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-04-18 19:30:22,197 INFO L87 Difference]: Start difference. First operand 4273 states and 14536 transitions. Second operand 9 states. [2020-04-18 19:30:22,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:22,337 INFO L93 Difference]: Finished difference Result 5631 states and 18983 transitions. [2020-04-18 19:30:22,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 19:30:22,337 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-04-18 19:30:22,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:30:22,361 INFO L225 Difference]: With dead ends: 5631 [2020-04-18 19:30:22,361 INFO L226 Difference]: Without dead ends: 2587 [2020-04-18 19:30:22,362 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-04-18 19:30:22,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2020-04-18 19:30:22,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 2587. [2020-04-18 19:30:22,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2587 states. [2020-04-18 19:30:22,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 8525 transitions. [2020-04-18 19:30:22,452 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 8525 transitions. Word has length 40 [2020-04-18 19:30:22,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:30:22,453 INFO L479 AbstractCegarLoop]: Abstraction has 2587 states and 8525 transitions. [2020-04-18 19:30:22,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 19:30:22,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 8525 transitions. [2020-04-18 19:30:22,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:30:22,460 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:30:22,460 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:30:22,460 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:30:22,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:22,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1047968913, now seen corresponding path program 1 times [2020-04-18 19:30:22,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:30:22,462 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2140256007] [2020-04-18 19:30:22,463 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:22,467 INFO L259 McrAutomatonBuilder]: Finished intersection with 197 states and 422 transitions. [2020-04-18 19:30:22,469 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-04-18 19:30:22,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:30:22,471 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:30:22,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:22,472 INFO L82 PathProgramCache]: Analyzing trace with hash -861876615, now seen corresponding path program 2 times [2020-04-18 19:30:22,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:22,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069091308] [2020-04-18 19:30:22,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:22,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:22,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069091308] [2020-04-18 19:30:22,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:22,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:22,651 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:22,655 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:22,668 INFO L259 McrAutomatonBuilder]: Finished intersection with 123 states and 226 transitions. [2020-04-18 19:30:22,668 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:22,729 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:30:22,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:30:22,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:30:22,733 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 8 states. [2020-04-18 19:30:23,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:23,132 INFO L93 Difference]: Finished difference Result 214 states and 438 transitions. [2020-04-18 19:30:23,132 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 438 transitions. [2020-04-18 19:30:23,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:30:23,133 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:30:23,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:23,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1047968913, now seen corresponding path program 3 times [2020-04-18 19:30:23,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:23,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965735884] [2020-04-18 19:30:23,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:23,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965735884] [2020-04-18 19:30:23,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:23,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:30:23,272 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:23,276 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:23,288 INFO L259 McrAutomatonBuilder]: Finished intersection with 102 states and 178 transitions. [2020-04-18 19:30:23,288 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:23,306 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 19:30:23,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:30:23,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:30:23,307 INFO L87 Difference]: Start difference. First operand 214 states and 438 transitions. Second operand 8 states. [2020-04-18 19:30:23,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:23,397 INFO L93 Difference]: Finished difference Result 214 states and 438 transitions. [2020-04-18 19:30:23,397 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 438 transitions. [2020-04-18 19:30:23,398 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:23,398 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2140256007] [2020-04-18 19:30:23,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:30:23,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:30:23,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2140256007] [2020-04-18 19:30:23,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 19:30:23,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:30:23,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:30:23,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=408, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:30:23,400 INFO L87 Difference]: Start difference. First operand 2587 states and 8525 transitions. Second operand 9 states. [2020-04-18 19:30:23,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:23,515 INFO L93 Difference]: Finished difference Result 3627 states and 11849 transitions. [2020-04-18 19:30:23,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 19:30:23,516 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-04-18 19:30:23,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:30:23,522 INFO L225 Difference]: With dead ends: 3627 [2020-04-18 19:30:23,522 INFO L226 Difference]: Without dead ends: 1597 [2020-04-18 19:30:23,523 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=225, Invalid=531, Unknown=0, NotChecked=0, Total=756 [2020-04-18 19:30:23,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2020-04-18 19:30:23,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1597. [2020-04-18 19:30:23,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1597 states. [2020-04-18 19:30:23,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 5027 transitions. [2020-04-18 19:30:23,565 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 5027 transitions. Word has length 42 [2020-04-18 19:30:23,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:30:23,565 INFO L479 AbstractCegarLoop]: Abstraction has 1597 states and 5027 transitions. [2020-04-18 19:30:23,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 19:30:23,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 5027 transitions. [2020-04-18 19:30:23,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:30:23,569 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:30:23,569 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:30:23,570 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:30:23,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:23,570 INFO L82 PathProgramCache]: Analyzing trace with hash 553705064, now seen corresponding path program 1 times [2020-04-18 19:30:23,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:30:23,570 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [403725531] [2020-04-18 19:30:23,572 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:23,587 INFO L259 McrAutomatonBuilder]: Finished intersection with 701 states and 2081 transitions. [2020-04-18 19:30:23,592 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states. [2020-04-18 19:30:23,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:30:23,595 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:30:23,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:23,595 INFO L82 PathProgramCache]: Analyzing trace with hash -599445656, now seen corresponding path program 2 times [2020-04-18 19:30:23,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:23,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362241240] [2020-04-18 19:30:23,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:23,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362241240] [2020-04-18 19:30:23,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:23,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:30:23,875 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:23,880 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:23,942 INFO L259 McrAutomatonBuilder]: Finished intersection with 351 states and 895 transitions. [2020-04-18 19:30:23,943 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:24,020 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 22 times. [2020-04-18 19:30:24,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:30:24,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:30:24,021 INFO L87 Difference]: Start difference. First operand 701 states. Second operand 9 states. [2020-04-18 19:30:24,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:24,292 INFO L93 Difference]: Finished difference Result 769 states and 2196 transitions. [2020-04-18 19:30:24,292 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 2196 transitions. [2020-04-18 19:30:24,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:30:24,295 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:30:24,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:24,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1249281106, now seen corresponding path program 3 times [2020-04-18 19:30:24,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:24,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142359854] [2020-04-18 19:30:24,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:24,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142359854] [2020-04-18 19:30:24,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:24,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:24,379 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:24,383 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:24,426 INFO L259 McrAutomatonBuilder]: Finished intersection with 297 states and 742 transitions. [2020-04-18 19:30:24,427 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:24,460 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:30:24,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:30:24,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:30:24,461 INFO L87 Difference]: Start difference. First operand 769 states and 2196 transitions. Second operand 7 states. [2020-04-18 19:30:24,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:24,629 INFO L93 Difference]: Finished difference Result 892 states and 2431 transitions. [2020-04-18 19:30:24,630 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 2431 transitions. [2020-04-18 19:30:24,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:30:24,632 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:30:24,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:24,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1318351660, now seen corresponding path program 4 times [2020-04-18 19:30:24,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:24,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85622801] [2020-04-18 19:30:24,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:24,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85622801] [2020-04-18 19:30:24,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:24,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:30:24,723 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:24,728 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:24,757 INFO L259 McrAutomatonBuilder]: Finished intersection with 210 states and 478 transitions. [2020-04-18 19:30:24,757 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:24,837 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 24 times. [2020-04-18 19:30:24,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:30:24,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2020-04-18 19:30:24,838 INFO L87 Difference]: Start difference. First operand 892 states and 2431 transitions. Second operand 6 states. [2020-04-18 19:30:24,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:24,913 INFO L93 Difference]: Finished difference Result 892 states and 2431 transitions. [2020-04-18 19:30:24,913 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 2431 transitions. [2020-04-18 19:30:24,915 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:24,916 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [403725531] [2020-04-18 19:30:24,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:30:24,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:30:24,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [403725531] [2020-04-18 19:30:24,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 19:30:24,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:30:24,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 19:30:24,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=981, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:30:24,918 INFO L87 Difference]: Start difference. First operand 1597 states and 5027 transitions. Second operand 15 states. [2020-04-18 19:30:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:25,764 INFO L93 Difference]: Finished difference Result 2067 states and 6448 transitions. [2020-04-18 19:30:25,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-04-18 19:30:25,765 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-04-18 19:30:25,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:30:25,779 INFO L225 Difference]: With dead ends: 2067 [2020-04-18 19:30:25,779 INFO L226 Difference]: Without dead ends: 1475 [2020-04-18 19:30:25,781 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=699, Invalid=3207, Unknown=0, NotChecked=0, Total=3906 [2020-04-18 19:30:25,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2020-04-18 19:30:25,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1475. [2020-04-18 19:30:25,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1475 states. [2020-04-18 19:30:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4614 transitions. [2020-04-18 19:30:25,841 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4614 transitions. Word has length 45 [2020-04-18 19:30:25,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:30:25,841 INFO L479 AbstractCegarLoop]: Abstraction has 1475 states and 4614 transitions. [2020-04-18 19:30:25,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 19:30:25,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4614 transitions. [2020-04-18 19:30:25,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:30:25,845 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:30:25,846 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:30:25,846 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:30:25,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:25,847 INFO L82 PathProgramCache]: Analyzing trace with hash 796349029, now seen corresponding path program 1 times [2020-04-18 19:30:25,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:30:25,847 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1974012982] [2020-04-18 19:30:25,850 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:25,878 INFO L259 McrAutomatonBuilder]: Finished intersection with 857 states and 2602 transitions. [2020-04-18 19:30:25,885 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states. [2020-04-18 19:30:25,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:30:25,890 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:30:25,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:25,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1286469327, now seen corresponding path program 2 times [2020-04-18 19:30:25,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:25,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404057571] [2020-04-18 19:30:25,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:26,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404057571] [2020-04-18 19:30:26,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:26,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:30:26,024 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:26,029 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:26,097 INFO L259 McrAutomatonBuilder]: Finished intersection with 395 states and 1012 transitions. [2020-04-18 19:30:26,097 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:26,167 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 26 times. [2020-04-18 19:30:26,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:30:26,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:30:26,168 INFO L87 Difference]: Start difference. First operand 857 states. Second operand 9 states. [2020-04-18 19:30:26,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:26,406 INFO L93 Difference]: Finished difference Result 993 states and 2900 transitions. [2020-04-18 19:30:26,406 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 2900 transitions. [2020-04-18 19:30:26,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:30:26,409 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:30:26,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:26,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1576364665, now seen corresponding path program 3 times [2020-04-18 19:30:26,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:26,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923375743] [2020-04-18 19:30:26,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:26,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:26,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923375743] [2020-04-18 19:30:26,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:26,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:30:26,515 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:26,519 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:26,587 INFO L259 McrAutomatonBuilder]: Finished intersection with 381 states and 1001 transitions. [2020-04-18 19:30:26,587 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:26,626 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 24 times. [2020-04-18 19:30:26,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:30:26,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:30:26,627 INFO L87 Difference]: Start difference. First operand 993 states and 2900 transitions. Second operand 8 states. [2020-04-18 19:30:26,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:26,874 INFO L93 Difference]: Finished difference Result 1188 states and 3309 transitions. [2020-04-18 19:30:26,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 3309 transitions. [2020-04-18 19:30:26,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:30:26,878 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:30:26,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:26,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1911624521, now seen corresponding path program 4 times [2020-04-18 19:30:26,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:26,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290674750] [2020-04-18 19:30:26,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:26,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290674750] [2020-04-18 19:30:26,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:26,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:26,990 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:26,993 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:27,018 INFO L259 McrAutomatonBuilder]: Finished intersection with 231 states and 527 transitions. [2020-04-18 19:30:27,018 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:27,145 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 29 times. [2020-04-18 19:30:27,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:30:27,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=925, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:30:27,146 INFO L87 Difference]: Start difference. First operand 1188 states and 3309 transitions. Second operand 8 states. [2020-04-18 19:30:27,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:27,299 INFO L93 Difference]: Finished difference Result 1188 states and 3309 transitions. [2020-04-18 19:30:27,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 3309 transitions. [2020-04-18 19:30:27,301 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:27,302 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1974012982] [2020-04-18 19:30:27,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:30:27,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:30:27,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1974012982] [2020-04-18 19:30:27,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 19:30:27,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:30:27,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 19:30:27,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1245, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 19:30:27,304 INFO L87 Difference]: Start difference. First operand 1475 states and 4614 transitions. Second operand 17 states. [2020-04-18 19:30:28,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:28,005 INFO L93 Difference]: Finished difference Result 1664 states and 5091 transitions. [2020-04-18 19:30:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-04-18 19:30:28,005 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2020-04-18 19:30:28,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:30:28,010 INFO L225 Difference]: With dead ends: 1664 [2020-04-18 19:30:28,011 INFO L226 Difference]: Without dead ends: 1160 [2020-04-18 19:30:28,012 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=561, Invalid=3099, Unknown=0, NotChecked=0, Total=3660 [2020-04-18 19:30:28,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2020-04-18 19:30:28,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1160. [2020-04-18 19:30:28,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2020-04-18 19:30:28,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 3504 transitions. [2020-04-18 19:30:28,040 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 3504 transitions. Word has length 46 [2020-04-18 19:30:28,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:30:28,040 INFO L479 AbstractCegarLoop]: Abstraction has 1160 states and 3504 transitions. [2020-04-18 19:30:28,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 19:30:28,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 3504 transitions. [2020-04-18 19:30:28,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:30:28,042 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:30:28,043 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:30:28,043 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:30:28,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:28,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1446515860, now seen corresponding path program 1 times [2020-04-18 19:30:28,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:30:28,044 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [185054420] [2020-04-18 19:30:28,045 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:28,066 INFO L259 McrAutomatonBuilder]: Finished intersection with 1064 states and 3295 transitions. [2020-04-18 19:30:28,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states. [2020-04-18 19:30:28,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:30:28,077 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:30:28,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:28,077 INFO L82 PathProgramCache]: Analyzing trace with hash 560953550, now seen corresponding path program 2 times [2020-04-18 19:30:28,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:28,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556811595] [2020-04-18 19:30:28,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:28,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:28,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556811595] [2020-04-18 19:30:28,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:28,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:30:28,173 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:28,177 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:28,286 INFO L259 McrAutomatonBuilder]: Finished intersection with 406 states and 1033 transitions. [2020-04-18 19:30:28,286 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:28,361 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 30 times. [2020-04-18 19:30:28,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:30:28,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:30:28,362 INFO L87 Difference]: Start difference. First operand 1064 states. Second operand 9 states. [2020-04-18 19:30:28,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:28,586 INFO L93 Difference]: Finished difference Result 1234 states and 3676 transitions. [2020-04-18 19:30:28,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3676 transitions. [2020-04-18 19:30:28,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:30:28,590 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:30:28,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:28,590 INFO L82 PathProgramCache]: Analyzing trace with hash 164132664, now seen corresponding path program 3 times [2020-04-18 19:30:28,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:28,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188044565] [2020-04-18 19:30:28,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:28,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188044565] [2020-04-18 19:30:28,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:28,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:28,669 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:28,673 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:28,734 INFO L259 McrAutomatonBuilder]: Finished intersection with 402 states and 1050 transitions. [2020-04-18 19:30:28,735 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:28,776 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 23 times. [2020-04-18 19:30:28,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:30:28,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:30:28,777 INFO L87 Difference]: Start difference. First operand 1234 states and 3676 transitions. Second operand 7 states. [2020-04-18 19:30:28,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:28,937 INFO L93 Difference]: Finished difference Result 1624 states and 4689 transitions. [2020-04-18 19:30:28,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 4689 transitions. [2020-04-18 19:30:28,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:30:28,940 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:30:28,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:28,940 INFO L82 PathProgramCache]: Analyzing trace with hash 917615030, now seen corresponding path program 4 times [2020-04-18 19:30:28,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:28,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179797830] [2020-04-18 19:30:28,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:29,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:29,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179797830] [2020-04-18 19:30:29,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:29,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:29,047 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:29,051 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:29,092 INFO L259 McrAutomatonBuilder]: Finished intersection with 252 states and 576 transitions. [2020-04-18 19:30:29,092 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:29,237 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 31 times. [2020-04-18 19:30:29,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:30:29,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=925, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:30:29,238 INFO L87 Difference]: Start difference. First operand 1624 states and 4689 transitions. Second operand 8 states. [2020-04-18 19:30:29,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:29,472 INFO L93 Difference]: Finished difference Result 1720 states and 4821 transitions. [2020-04-18 19:30:29,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 4821 transitions. [2020-04-18 19:30:29,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:30:29,475 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:30:29,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:29,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1095789686, now seen corresponding path program 5 times [2020-04-18 19:30:29,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:29,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087173101] [2020-04-18 19:30:29,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:29,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087173101] [2020-04-18 19:30:29,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:29,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:30:29,561 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:29,568 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:29,589 INFO L259 McrAutomatonBuilder]: Finished intersection with 132 states and 249 transitions. [2020-04-18 19:30:29,589 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:29,680 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:30:29,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:30:29,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1617, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 19:30:29,682 INFO L87 Difference]: Start difference. First operand 1720 states and 4821 transitions. Second operand 8 states. [2020-04-18 19:30:29,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:29,954 INFO L93 Difference]: Finished difference Result 1720 states and 4821 transitions. [2020-04-18 19:30:29,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 4821 transitions. [2020-04-18 19:30:29,957 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:29,958 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [185054420] [2020-04-18 19:30:29,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:30:29,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:30:29,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [185054420] [2020-04-18 19:30:29,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 19:30:29,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:30:29,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 19:30:29,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=2090, Unknown=0, NotChecked=0, Total=2450 [2020-04-18 19:30:29,961 INFO L87 Difference]: Start difference. First operand 1160 states and 3504 transitions. Second operand 20 states. [2020-04-18 19:30:30,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:30,648 INFO L93 Difference]: Finished difference Result 998 states and 2901 transitions. [2020-04-18 19:30:30,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-18 19:30:30,649 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 47 [2020-04-18 19:30:30,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:30:30,651 INFO L225 Difference]: With dead ends: 998 [2020-04-18 19:30:30,651 INFO L226 Difference]: Without dead ends: 674 [2020-04-18 19:30:30,653 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 266 SyntacticMatches, 7 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=641, Invalid=3649, Unknown=0, NotChecked=0, Total=4290 [2020-04-18 19:30:30,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2020-04-18 19:30:30,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2020-04-18 19:30:30,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2020-04-18 19:30:30,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1884 transitions. [2020-04-18 19:30:30,669 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1884 transitions. Word has length 47 [2020-04-18 19:30:30,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:30:30,669 INFO L479 AbstractCegarLoop]: Abstraction has 674 states and 1884 transitions. [2020-04-18 19:30:30,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 19:30:30,670 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1884 transitions. [2020-04-18 19:30:30,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:30:30,671 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:30:30,671 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:30:30,671 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:30:30,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:30,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1929453779, now seen corresponding path program 1 times [2020-04-18 19:30:30,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:30:30,672 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1686578745] [2020-04-18 19:30:30,674 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:30,712 INFO L259 McrAutomatonBuilder]: Finished intersection with 1762 states and 5713 transitions. [2020-04-18 19:30:30,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states. [2020-04-18 19:30:30,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:30:30,730 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:30:30,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:30,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1228147501, now seen corresponding path program 2 times [2020-04-18 19:30:30,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:30,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468557695] [2020-04-18 19:30:30,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:30,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468557695] [2020-04-18 19:30:30,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:30,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:30,821 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:30,825 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:30,877 INFO L259 McrAutomatonBuilder]: Finished intersection with 354 states and 825 transitions. [2020-04-18 19:30:30,877 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:30,955 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 32 times. [2020-04-18 19:30:30,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:30:30,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:30:30,955 INFO L87 Difference]: Start difference. First operand 1762 states. Second operand 9 states. [2020-04-18 19:30:32,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:32,858 INFO L93 Difference]: Finished difference Result 4027 states and 12527 transitions. [2020-04-18 19:30:32,859 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 12527 transitions. [2020-04-18 19:30:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:30:32,865 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:30:32,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:32,865 INFO L82 PathProgramCache]: Analyzing trace with hash -354455825, now seen corresponding path program 3 times [2020-04-18 19:30:32,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:32,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177915837] [2020-04-18 19:30:32,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:32,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177915837] [2020-04-18 19:30:32,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:32,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:30:32,971 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:32,975 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:33,010 INFO L259 McrAutomatonBuilder]: Finished intersection with 241 states and 503 transitions. [2020-04-18 19:30:33,011 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:33,061 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:30:33,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:30:33,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=2087, Unknown=0, NotChecked=0, Total=2652 [2020-04-18 19:30:33,063 INFO L87 Difference]: Start difference. First operand 4027 states and 12527 transitions. Second operand 8 states. [2020-04-18 19:30:33,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:33,261 INFO L93 Difference]: Finished difference Result 4657 states and 14216 transitions. [2020-04-18 19:30:33,261 INFO L276 IsEmpty]: Start isEmpty. Operand 4657 states and 14216 transitions. [2020-04-18 19:30:33,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:30:33,269 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:30:33,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:33,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1731433799, now seen corresponding path program 4 times [2020-04-18 19:30:33,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:33,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381321937] [2020-04-18 19:30:33,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:33,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381321937] [2020-04-18 19:30:33,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:33,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:33,350 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:33,354 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:33,433 INFO L259 McrAutomatonBuilder]: Finished intersection with 414 states and 1081 transitions. [2020-04-18 19:30:33,433 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:33,496 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:30:33,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:30:33,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=2960, Unknown=0, NotChecked=0, Total=3660 [2020-04-18 19:30:33,498 INFO L87 Difference]: Start difference. First operand 4657 states and 14216 transitions. Second operand 7 states. [2020-04-18 19:30:33,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:33,631 INFO L93 Difference]: Finished difference Result 6079 states and 18083 transitions. [2020-04-18 19:30:33,631 INFO L276 IsEmpty]: Start isEmpty. Operand 6079 states and 18083 transitions. [2020-04-18 19:30:33,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:30:33,643 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:30:33,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:33,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1124022177, now seen corresponding path program 5 times [2020-04-18 19:30:33,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:33,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559603288] [2020-04-18 19:30:33,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:33,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:33,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559603288] [2020-04-18 19:30:33,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:33,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:33,729 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:33,733 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:33,822 INFO L259 McrAutomatonBuilder]: Finished intersection with 438 states and 1146 transitions. [2020-04-18 19:30:33,822 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:33,864 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 25 times. [2020-04-18 19:30:33,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:30:33,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=3503, Unknown=0, NotChecked=0, Total=4290 [2020-04-18 19:30:33,866 INFO L87 Difference]: Start difference. First operand 6079 states and 18083 transitions. Second operand 7 states. [2020-04-18 19:30:34,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:34,114 INFO L93 Difference]: Finished difference Result 6511 states and 19195 transitions. [2020-04-18 19:30:34,114 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 19195 transitions. [2020-04-18 19:30:34,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:30:34,128 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:30:34,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:34,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1418025821, now seen corresponding path program 6 times [2020-04-18 19:30:34,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:34,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875637232] [2020-04-18 19:30:34,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:34,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:34,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875637232] [2020-04-18 19:30:34,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:34,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:30:34,232 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:34,239 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:34,388 INFO L259 McrAutomatonBuilder]: Finished intersection with 276 states and 632 transitions. [2020-04-18 19:30:34,388 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:34,645 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 31 times. [2020-04-18 19:30:34,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:30:34,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1009, Invalid=5153, Unknown=0, NotChecked=0, Total=6162 [2020-04-18 19:30:34,647 INFO L87 Difference]: Start difference. First operand 6511 states and 19195 transitions. Second operand 8 states. [2020-04-18 19:30:34,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:34,967 INFO L93 Difference]: Finished difference Result 7440 states and 20807 transitions. [2020-04-18 19:30:34,967 INFO L276 IsEmpty]: Start isEmpty. Operand 7440 states and 20807 transitions. [2020-04-18 19:30:34,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:30:34,981 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 19:30:34,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:30:34,982 INFO L82 PathProgramCache]: Analyzing trace with hash 845178397, now seen corresponding path program 7 times [2020-04-18 19:30:34,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:30:34,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197306504] [2020-04-18 19:30:34,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:30:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:30:35,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:30:35,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197306504] [2020-04-18 19:30:35,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:30:35,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:30:35,082 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:30:35,088 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:30:35,114 INFO L259 McrAutomatonBuilder]: Finished intersection with 144 states and 271 transitions. [2020-04-18 19:30:35,115 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:30:35,207 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:30:35,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:30:35,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1078, Invalid=6578, Unknown=0, NotChecked=0, Total=7656 [2020-04-18 19:30:35,210 INFO L87 Difference]: Start difference. First operand 7440 states and 20807 transitions. Second operand 8 states. [2020-04-18 19:30:35,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:35,546 INFO L93 Difference]: Finished difference Result 7632 states and 20983 transitions. [2020-04-18 19:30:35,546 INFO L276 IsEmpty]: Start isEmpty. Operand 7632 states and 20983 transitions. [2020-04-18 19:30:35,555 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:35,556 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1686578745] [2020-04-18 19:30:35,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:30:35,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:30:35,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1686578745] [2020-04-18 19:30:35,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-04-18 19:30:35,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:30:35,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-04-18 19:30:35,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1166, Invalid=7764, Unknown=0, NotChecked=0, Total=8930 [2020-04-18 19:30:35,559 INFO L87 Difference]: Start difference. First operand 674 states and 1884 transitions. Second operand 22 states. [2020-04-18 19:30:36,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:30:36,244 INFO L93 Difference]: Finished difference Result 620 states and 1722 transitions. [2020-04-18 19:30:36,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-18 19:30:36,245 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 49 [2020-04-18 19:30:36,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:30:36,246 INFO L225 Difference]: With dead ends: 620 [2020-04-18 19:30:36,246 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:30:36,249 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5236 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1593, Invalid=11517, Unknown=0, NotChecked=0, Total=13110 [2020-04-18 19:30:36,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:30:36,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:30:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:30:36,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:30:36,250 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-04-18 19:30:36,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:30:36,250 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:30:36,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-04-18 19:30:36,250 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:30:36,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:30:36,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:30:36 BasicIcfg [2020-04-18 19:30:36,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:30:36,257 INFO L168 Benchmark]: Toolchain (without parser) took 19887.52 ms. Allocated memory was 146.3 MB in the beginning and 631.8 MB in the end (delta: 485.5 MB). Free memory was 101.9 MB in the beginning and 140.6 MB in the end (delta: -38.6 MB). Peak memory consumption was 446.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:30:36,257 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-18 19:30:36,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.37 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 100.0 MB in the beginning and 159.2 MB in the end (delta: -59.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:30:36,258 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.27 ms. Allocated memory is still 203.9 MB. Free memory was 159.2 MB in the beginning and 157.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:30:36,259 INFO L168 Benchmark]: Boogie Preprocessor took 27.99 ms. Allocated memory is still 203.9 MB. Free memory was 157.2 MB in the beginning and 155.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:30:36,259 INFO L168 Benchmark]: RCFGBuilder took 435.82 ms. Allocated memory is still 203.9 MB. Free memory was 155.2 MB in the beginning and 132.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:30:36,260 INFO L168 Benchmark]: TraceAbstraction took 18628.25 ms. Allocated memory was 203.9 MB in the beginning and 631.8 MB in the end (delta: 427.8 MB). Free memory was 132.8 MB in the beginning and 140.6 MB in the end (delta: -7.8 MB). Peak memory consumption was 420.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:30:36,263 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 719.37 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 100.0 MB in the beginning and 159.2 MB in the end (delta: -59.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.27 ms. Allocated memory is still 203.9 MB. Free memory was 159.2 MB in the beginning and 157.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.99 ms. Allocated memory is still 203.9 MB. Free memory was 157.2 MB in the beginning and 155.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 435.82 ms. Allocated memory is still 203.9 MB. Free memory was 155.2 MB in the beginning and 132.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18628.25 ms. Allocated memory was 203.9 MB in the beginning and 631.8 MB in the end (delta: 427.8 MB). Free memory was 132.8 MB in the beginning and 140.6 MB in the end (delta: -7.8 MB). Peak memory consumption was 420.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 817 SDtfs, 2387 SDslu, 4542 SDs, 0 SdLazy, 915 SolverSat, 221 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1706 GetRequests, 1326 SyntacticMatches, 7 SemanticMatches, 373 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9367 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8473occurred 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: 0.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 210 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...