/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-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:31:01,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:31:01,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:31:01,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:31:01,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:31:01,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:31:01,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:31:01,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:31:01,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:31:01,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:31:01,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:31:01,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:31:01,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:31:01,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:31:01,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:31:01,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:31:01,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:31:01,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:31:01,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:31:01,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:31:01,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:31:01,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:31:01,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:31:01,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:31:01,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:31:01,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:31:01,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:31:01,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:31:01,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:31:01,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:31:01,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:31:01,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:31:01,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:31:01,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:31:01,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:31:01,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:31:01,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:31:01,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:31:01,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:31:01,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:31:01,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:31:01,949 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-VariableLbe-McrStrategy.epf [2020-04-18 15:31:01,964 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:31:01,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:31:01,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:31:01,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:31:01,966 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:31:01,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:31:01,967 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:31:01,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:31:01,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:31:01,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:31:01,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:31:01,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:31:01,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:31:01,968 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:31:01,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:31:01,969 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:31:01,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:31:01,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:31:01,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:31:01,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:31:01,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:31:01,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:31:01,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:31:01,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:31:01,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:31:01,971 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:31:01,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:31:01,971 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:31:01,971 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:31:01,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:31:01,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:31:02,284 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:31:02,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:31:02,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:31:02,302 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:31:02,303 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:31:02,304 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2020-04-18 15:31:02,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3433a9528/c48d8ee85c494a189cdc36166a484805/FLAGefdfdd9f0 [2020-04-18 15:31:02,971 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:31:02,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2020-04-18 15:31:02,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3433a9528/c48d8ee85c494a189cdc36166a484805/FLAGefdfdd9f0 [2020-04-18 15:31:03,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3433a9528/c48d8ee85c494a189cdc36166a484805 [2020-04-18 15:31:03,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:31:03,254 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:31:03,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:31:03,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:31:03,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:31:03,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:31:03" (1/1) ... [2020-04-18 15:31:03,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10143938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:03, skipping insertion in model container [2020-04-18 15:31:03,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:31:03" (1/1) ... [2020-04-18 15:31:03,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:31:03,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:31:03,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:31:03,792 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:31:03,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:31:03,920 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:31:03,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:03 WrapperNode [2020-04-18 15:31:03,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:31:03,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:31:03,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:31:03,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:31:03,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:03" (1/1) ... [2020-04-18 15:31:03,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:03" (1/1) ... [2020-04-18 15:31:03,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:31:03,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:31:03,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:31:03,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:31:03,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:03" (1/1) ... [2020-04-18 15:31:03,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:03" (1/1) ... [2020-04-18 15:31:03,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:03" (1/1) ... [2020-04-18 15:31:03,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:03" (1/1) ... [2020-04-18 15:31:03,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:03" (1/1) ... [2020-04-18 15:31:03,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:03" (1/1) ... [2020-04-18 15:31:03,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:03" (1/1) ... [2020-04-18 15:31:03,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:31:03,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:31:03,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:31:03,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:31:04,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:03" (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 15:31:04,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:31:04,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:31:04,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:31:04,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:31:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:31:04,075 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:31:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:31:04,075 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:31:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:31:04,076 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:31:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:31:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:31:04,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:31:04,078 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 15:31:04,479 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:31:04,479 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:31:04,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:31:04 BoogieIcfgContainer [2020-04-18 15:31:04,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:31:04,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:31:04,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:31:04,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:31:04,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:31:03" (1/3) ... [2020-04-18 15:31:04,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a74458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:31:04, skipping insertion in model container [2020-04-18 15:31:04,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:03" (2/3) ... [2020-04-18 15:31:04,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a74458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:31:04, skipping insertion in model container [2020-04-18 15:31:04,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:31:04" (3/3) ... [2020-04-18 15:31:04,493 INFO L109 eAbstractionObserver]: Analyzing ICFG safe026_tso.opt.i [2020-04-18 15:31:04,505 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:31:04,505 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:31:04,514 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:31:04,515 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:31:04,545 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,545 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,545 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,546 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,546 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,547 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,547 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,547 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,548 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,548 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,548 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,548 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,549 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,549 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,549 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,550 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,550 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,550 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,555 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,555 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,555 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,556 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,564 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,564 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,564 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,565 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,567 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,567 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,567 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,567 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:04,587 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:31:04,605 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:31:04,605 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:31:04,605 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:31:04,606 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:31:04,606 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:31:04,606 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:31:04,606 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:31:04,606 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:31:04,623 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-04-18 15:31:04,625 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 15:31:04,671 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 15:31:04,671 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:31:04,677 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 15:31:04,680 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 15:31:04,717 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 15:31:04,722 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:31:04,723 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 15:31:04,727 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-18 15:31:04,728 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:31:06,081 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 15:31:06,215 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2133 [2020-04-18 15:31:06,215 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 15:31:06,219 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-18 15:31:06,241 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-04-18 15:31:06,243 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-04-18 15:31:06,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:31:06,251 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:31:06,252 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:31:06,252 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:31:06,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:06,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1225676630, now seen corresponding path program 1 times [2020-04-18 15:31:06,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:31:06,267 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [311450805] [2020-04-18 15:31:06,283 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:06,296 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:31:06,298 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:31:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:31:06,299 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:31:06,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:06,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1225676630, now seen corresponding path program 2 times [2020-04-18 15:31:06,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:06,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920710520] [2020-04-18 15:31:06,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:06,576 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 15:31:06,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920710520] [2020-04-18 15:31:06,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:06,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:31:06,581 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:06,584 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:06,590 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:31:06,590 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:06,598 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:31:06,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:31:06,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:31:06,606 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:31:06,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:06,610 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:31:06,610 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:31:06,611 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:31:06,611 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [311450805] [2020-04-18 15:31:06,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:31:06,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:31:06,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [311450805] [2020-04-18 15:31:06,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:31:06,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:31:06,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:31:06,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:31:06,620 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-04-18 15:31:06,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:06,669 INFO L93 Difference]: Finished difference Result 218 states and 604 transitions. [2020-04-18 15:31:06,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:31:06,672 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:31:06,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:31:06,702 INFO L225 Difference]: With dead ends: 218 [2020-04-18 15:31:06,704 INFO L226 Difference]: Without dead ends: 170 [2020-04-18 15:31:06,710 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:31:06,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-04-18 15:31:06,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-04-18 15:31:06,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-04-18 15:31:06,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 452 transitions. [2020-04-18 15:31:06,812 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 452 transitions. Word has length 8 [2020-04-18 15:31:06,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:31:06,817 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 452 transitions. [2020-04-18 15:31:06,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:31:06,818 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 452 transitions. [2020-04-18 15:31:06,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:31:06,819 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:31:06,819 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:31:06,819 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:31:06,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:06,820 INFO L82 PathProgramCache]: Analyzing trace with hash 658729482, now seen corresponding path program 1 times [2020-04-18 15:31:06,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:31:06,822 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [225233330] [2020-04-18 15:31:06,822 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:06,823 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 17 transitions. [2020-04-18 15:31:06,824 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 15:31:06,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:31:06,825 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:31:06,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:06,825 INFO L82 PathProgramCache]: Analyzing trace with hash 658730322, now seen corresponding path program 2 times [2020-04-18 15:31:06,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:06,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117898179] [2020-04-18 15:31:06,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:06,930 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 15:31:06,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117898179] [2020-04-18 15:31:06,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:06,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:31:06,931 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:06,932 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:06,933 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:31:06,933 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:06,943 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:31:06,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:31:06,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:31:06,944 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-04-18 15:31:06,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:06,952 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 15:31:06,952 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-04-18 15:31:06,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:31:06,953 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:31:06,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:06,953 INFO L82 PathProgramCache]: Analyzing trace with hash 658729482, now seen corresponding path program 3 times [2020-04-18 15:31:06,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:06,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190194335] [2020-04-18 15:31:06,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:07,017 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 15:31:07,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190194335] [2020-04-18 15:31:07,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:07,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:31:07,019 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:07,019 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:07,021 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-04-18 15:31:07,021 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:07,028 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:31:07,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:31:07,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:31:07,029 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2020-04-18 15:31:07,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:07,029 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 15:31:07,030 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-04-18 15:31:07,030 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:31:07,030 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [225233330] [2020-04-18 15:31:07,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:31:07,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:31:07,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [225233330] [2020-04-18 15:31:07,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:31:07,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:31:07,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:31:07,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:31:07,033 INFO L87 Difference]: Start difference. First operand 170 states and 452 transitions. Second operand 4 states. [2020-04-18 15:31:07,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:07,071 INFO L93 Difference]: Finished difference Result 220 states and 567 transitions. [2020-04-18 15:31:07,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:31:07,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 15:31:07,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:31:07,074 INFO L225 Difference]: With dead ends: 220 [2020-04-18 15:31:07,074 INFO L226 Difference]: Without dead ends: 148 [2020-04-18 15:31:07,075 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:31:07,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-04-18 15:31:07,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-04-18 15:31:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-04-18 15:31:07,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 377 transitions. [2020-04-18 15:31:07,089 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 377 transitions. Word has length 9 [2020-04-18 15:31:07,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:31:07,090 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 377 transitions. [2020-04-18 15:31:07,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:31:07,090 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 377 transitions. [2020-04-18 15:31:07,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:31:07,091 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:31:07,092 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:31:07,092 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:31:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:07,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1054223531, now seen corresponding path program 1 times [2020-04-18 15:31:07,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:31:07,093 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2001752356] [2020-04-18 15:31:07,093 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:07,094 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 30 transitions. [2020-04-18 15:31:07,094 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 15:31:07,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:31:07,095 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:31:07,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:07,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1054809521, now seen corresponding path program 2 times [2020-04-18 15:31:07,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:07,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138892356] [2020-04-18 15:31:07,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:07,131 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 15:31:07,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138892356] [2020-04-18 15:31:07,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:07,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:31:07,132 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:07,133 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:07,134 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 15:31:07,134 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:07,138 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:31:07,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:31:07,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:31:07,139 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-04-18 15:31:07,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:07,145 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2020-04-18 15:31:07,145 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2020-04-18 15:31:07,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:31:07,146 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:31:07,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:07,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1054810361, now seen corresponding path program 3 times [2020-04-18 15:31:07,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:07,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74916133] [2020-04-18 15:31:07,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:07,207 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 15:31:07,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74916133] [2020-04-18 15:31:07,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:07,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:31:07,209 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:07,210 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:07,212 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-04-18 15:31:07,212 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:07,217 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:31:07,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:31:07,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:31:07,218 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 4 states. [2020-04-18 15:31:07,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:07,235 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 15:31:07,236 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 15:31:07,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:31:07,236 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:31:07,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:07,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1054223531, now seen corresponding path program 4 times [2020-04-18 15:31:07,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:07,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578657952] [2020-04-18 15:31:07,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:07,291 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 15:31:07,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578657952] [2020-04-18 15:31:07,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:07,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:31:07,292 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:07,293 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:07,295 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 15:31:07,295 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:07,319 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:31:07,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:31:07,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:31:07,320 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 4 states. [2020-04-18 15:31:07,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:07,332 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 15:31:07,333 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 15:31:07,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:31:07,333 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2001752356] [2020-04-18 15:31:07,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:31:07,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:31:07,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2001752356] [2020-04-18 15:31:07,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 15:31:07,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:31:07,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:31:07,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:31:07,335 INFO L87 Difference]: Start difference. First operand 148 states and 377 transitions. Second operand 6 states. [2020-04-18 15:31:07,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:07,482 INFO L93 Difference]: Finished difference Result 168 states and 391 transitions. [2020-04-18 15:31:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:31:07,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-04-18 15:31:07,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:31:07,485 INFO L225 Difference]: With dead ends: 168 [2020-04-18 15:31:07,485 INFO L226 Difference]: Without dead ends: 126 [2020-04-18 15:31:07,486 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:31:07,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-04-18 15:31:07,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-04-18 15:31:07,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-04-18 15:31:07,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 291 transitions. [2020-04-18 15:31:07,506 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 291 transitions. Word has length 10 [2020-04-18 15:31:07,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:31:07,507 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 291 transitions. [2020-04-18 15:31:07,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 15:31:07,507 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 291 transitions. [2020-04-18 15:31:07,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:31:07,510 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:31:07,510 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:31:07,511 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:31:07,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:07,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1670186442, now seen corresponding path program 1 times [2020-04-18 15:31:07,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:31:07,513 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2072634167] [2020-04-18 15:31:07,513 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:07,517 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 15:31:07,517 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 15:31:07,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:31:07,518 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:31:07,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:07,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1660643412, now seen corresponding path program 2 times [2020-04-18 15:31:07,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:07,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938015341] [2020-04-18 15:31:07,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:07,566 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 15:31:07,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938015341] [2020-04-18 15:31:07,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:07,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:31:07,567 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:07,568 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:07,569 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 13 transitions. [2020-04-18 15:31:07,569 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:07,574 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:31:07,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:31:07,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:31:07,575 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 15:31:07,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:07,582 INFO L93 Difference]: Finished difference Result 32 states and 51 transitions. [2020-04-18 15:31:07,582 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 51 transitions. [2020-04-18 15:31:07,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:31:07,583 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:31:07,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:07,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1660616742, now seen corresponding path program 3 times [2020-04-18 15:31:07,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:07,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831063847] [2020-04-18 15:31:07,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:07,631 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 15:31:07,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831063847] [2020-04-18 15:31:07,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:07,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:31:07,632 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:07,633 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:07,636 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-04-18 15:31:07,637 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:07,662 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:31:07,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:31:07,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:31:07,663 INFO L87 Difference]: Start difference. First operand 32 states and 51 transitions. Second operand 4 states. [2020-04-18 15:31:07,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:07,681 INFO L93 Difference]: Finished difference Result 38 states and 58 transitions. [2020-04-18 15:31:07,681 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 58 transitions. [2020-04-18 15:31:07,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:31:07,682 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:31:07,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:07,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1678808472, now seen corresponding path program 4 times [2020-04-18 15:31:07,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:07,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580697218] [2020-04-18 15:31:07,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:07,732 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 15:31:07,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580697218] [2020-04-18 15:31:07,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:07,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:31:07,733 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:07,735 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:07,738 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 15:31:07,738 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:07,763 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:31:07,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:31:07,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:31:07,764 INFO L87 Difference]: Start difference. First operand 38 states and 58 transitions. Second operand 4 states. [2020-04-18 15:31:07,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:07,788 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2020-04-18 15:31:07,788 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 63 transitions. [2020-04-18 15:31:07,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:31:07,788 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:31:07,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:07,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1670186442, now seen corresponding path program 5 times [2020-04-18 15:31:07,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:07,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397693107] [2020-04-18 15:31:07,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:07,836 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 15:31:07,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397693107] [2020-04-18 15:31:07,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:07,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:31:07,837 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:07,838 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:07,841 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 15:31:07,841 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:07,904 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:31:07,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:31:07,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:31:07,905 INFO L87 Difference]: Start difference. First operand 44 states and 63 transitions. Second operand 6 states. [2020-04-18 15:31:07,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:07,933 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2020-04-18 15:31:07,933 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 63 transitions. [2020-04-18 15:31:07,933 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:31:07,934 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2072634167] [2020-04-18 15:31:07,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:31:07,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:31:07,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2072634167] [2020-04-18 15:31:07,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:31:07,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:31:07,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:31:07,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:31:07,936 INFO L87 Difference]: Start difference. First operand 126 states and 291 transitions. Second operand 8 states. [2020-04-18 15:31:08,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:08,065 INFO L93 Difference]: Finished difference Result 121 states and 257 transitions. [2020-04-18 15:31:08,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 15:31:08,067 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-04-18 15:31:08,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:31:08,068 INFO L225 Difference]: With dead ends: 121 [2020-04-18 15:31:08,068 INFO L226 Difference]: Without dead ends: 93 [2020-04-18 15:31:08,068 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:31:08,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-04-18 15:31:08,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-04-18 15:31:08,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-04-18 15:31:08,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-04-18 15:31:08,079 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 11 [2020-04-18 15:31:08,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:31:08,079 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-04-18 15:31:08,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:31:08,079 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-04-18 15:31:08,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:31:08,080 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:31:08,080 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:31:08,080 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:31:08,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:08,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1269858217, now seen corresponding path program 1 times [2020-04-18 15:31:08,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:31:08,081 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1730166328] [2020-04-18 15:31:08,082 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:08,083 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 89 transitions. [2020-04-18 15:31:08,083 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-04-18 15:31:08,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:31:08,084 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:31:08,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:08,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1850487455, now seen corresponding path program 2 times [2020-04-18 15:31:08,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:08,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591577018] [2020-04-18 15:31:08,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:08,107 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 15:31:08,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591577018] [2020-04-18 15:31:08,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:08,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:31:08,108 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:08,109 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:08,111 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 19 transitions. [2020-04-18 15:31:08,111 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:08,115 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:31:08,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:31:08,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:31:08,115 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-04-18 15:31:08,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:08,120 INFO L93 Difference]: Finished difference Result 54 states and 99 transitions. [2020-04-18 15:31:08,120 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 99 transitions. [2020-04-18 15:31:08,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:31:08,121 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:31:08,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:08,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1905492935, now seen corresponding path program 3 times [2020-04-18 15:31:08,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:08,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096419971] [2020-04-18 15:31:08,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:08,148 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 15:31:08,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096419971] [2020-04-18 15:31:08,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:08,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:31:08,149 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:08,150 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:08,153 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-04-18 15:31:08,153 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:08,159 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:31:08,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:31:08,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:31:08,160 INFO L87 Difference]: Start difference. First operand 54 states and 99 transitions. Second operand 4 states. [2020-04-18 15:31:08,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:08,172 INFO L93 Difference]: Finished difference Result 72 states and 132 transitions. [2020-04-18 15:31:08,172 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 132 transitions. [2020-04-18 15:31:08,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:31:08,173 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:31:08,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:08,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1572756699, now seen corresponding path program 4 times [2020-04-18 15:31:08,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:08,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927075240] [2020-04-18 15:31:08,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:08,213 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 15:31:08,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927075240] [2020-04-18 15:31:08,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:08,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:31:08,214 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:08,215 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:08,217 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-04-18 15:31:08,217 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:08,234 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:31:08,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:31:08,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:31:08,235 INFO L87 Difference]: Start difference. First operand 72 states and 132 transitions. Second operand 4 states. [2020-04-18 15:31:08,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:08,263 INFO L93 Difference]: Finished difference Result 94 states and 159 transitions. [2020-04-18 15:31:08,263 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 159 transitions. [2020-04-18 15:31:08,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:31:08,263 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:31:08,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:08,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1268592937, now seen corresponding path program 5 times [2020-04-18 15:31:08,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:08,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368414272] [2020-04-18 15:31:08,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:08,320 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 15:31:08,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368414272] [2020-04-18 15:31:08,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:08,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:31:08,321 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:08,323 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:08,328 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 15:31:08,328 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:08,375 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:31:08,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:31:08,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:31:08,376 INFO L87 Difference]: Start difference. First operand 94 states and 159 transitions. Second operand 6 states. [2020-04-18 15:31:08,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:08,422 INFO L93 Difference]: Finished difference Result 98 states and 161 transitions. [2020-04-18 15:31:08,422 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 161 transitions. [2020-04-18 15:31:08,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:31:08,423 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:31:08,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:08,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1269858217, now seen corresponding path program 6 times [2020-04-18 15:31:08,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:08,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590441222] [2020-04-18 15:31:08,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:08,476 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 15:31:08,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590441222] [2020-04-18 15:31:08,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:08,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:31:08,478 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:08,479 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:08,482 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 15:31:08,482 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:08,514 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:31:08,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:31:08,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:31:08,515 INFO L87 Difference]: Start difference. First operand 98 states and 161 transitions. Second operand 7 states. [2020-04-18 15:31:08,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:08,588 INFO L93 Difference]: Finished difference Result 98 states and 161 transitions. [2020-04-18 15:31:08,589 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 161 transitions. [2020-04-18 15:31:08,589 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:31:08,591 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1730166328] [2020-04-18 15:31:08,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:31:08,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:31:08,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1730166328] [2020-04-18 15:31:08,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 15:31:08,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:31:08,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:31:08,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:31:08,593 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 9 states. [2020-04-18 15:31:08,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:08,715 INFO L93 Difference]: Finished difference Result 87 states and 178 transitions. [2020-04-18 15:31:08,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 15:31:08,716 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-04-18 15:31:08,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:31:08,717 INFO L225 Difference]: With dead ends: 87 [2020-04-18 15:31:08,717 INFO L226 Difference]: Without dead ends: 78 [2020-04-18 15:31:08,718 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:31:08,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-04-18 15:31:08,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-04-18 15:31:08,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-04-18 15:31:08,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 162 transitions. [2020-04-18 15:31:08,723 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 162 transitions. Word has length 13 [2020-04-18 15:31:08,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:31:08,723 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 162 transitions. [2020-04-18 15:31:08,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 15:31:08,724 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 162 transitions. [2020-04-18 15:31:08,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:31:08,725 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:31:08,725 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:31:08,725 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:31:08,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:08,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1906464189, now seen corresponding path program 1 times [2020-04-18 15:31:08,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:31:08,726 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1759301551] [2020-04-18 15:31:08,726 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:08,731 INFO L259 McrAutomatonBuilder]: Finished intersection with 178 states and 482 transitions. [2020-04-18 15:31:08,735 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-04-18 15:31:08,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:31:08,736 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:31:08,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:08,737 INFO L82 PathProgramCache]: Analyzing trace with hash -690242109, now seen corresponding path program 2 times [2020-04-18 15:31:08,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:08,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889479646] [2020-04-18 15:31:08,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:08,772 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 15:31:08,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889479646] [2020-04-18 15:31:08,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:08,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:31:08,773 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:08,775 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:08,783 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 78 transitions. [2020-04-18 15:31:08,784 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:08,787 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:31:08,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:31:08,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:31:08,788 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 3 states. [2020-04-18 15:31:08,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:08,797 INFO L93 Difference]: Finished difference Result 258 states and 660 transitions. [2020-04-18 15:31:08,797 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 660 transitions. [2020-04-18 15:31:08,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:31:08,799 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:31:08,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:08,799 INFO L82 PathProgramCache]: Analyzing trace with hash -745247589, now seen corresponding path program 3 times [2020-04-18 15:31:08,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:08,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952204937] [2020-04-18 15:31:08,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:08,838 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 15:31:08,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952204937] [2020-04-18 15:31:08,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:08,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:31:08,839 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:08,841 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:08,848 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 79 transitions. [2020-04-18 15:31:08,848 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:08,864 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:31:08,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:31:08,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:31:08,865 INFO L87 Difference]: Start difference. First operand 258 states and 660 transitions. Second operand 4 states. [2020-04-18 15:31:08,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:08,883 INFO L93 Difference]: Finished difference Result 386 states and 932 transitions. [2020-04-18 15:31:08,883 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 932 transitions. [2020-04-18 15:31:08,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:31:08,885 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:31:08,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:08,886 INFO L82 PathProgramCache]: Analyzing trace with hash -714894699, now seen corresponding path program 4 times [2020-04-18 15:31:08,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:08,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436115062] [2020-04-18 15:31:08,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:08,928 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 15:31:08,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436115062] [2020-04-18 15:31:08,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:08,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:31:08,929 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:08,931 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:08,938 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 65 transitions. [2020-04-18 15:31:08,939 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:08,951 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:31:08,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:31:08,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:31:08,953 INFO L87 Difference]: Start difference. First operand 386 states and 932 transitions. Second operand 4 states. [2020-04-18 15:31:08,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:08,979 INFO L93 Difference]: Finished difference Result 496 states and 1183 transitions. [2020-04-18 15:31:08,979 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1183 transitions. [2020-04-18 15:31:08,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:31:08,981 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:31:08,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:08,981 INFO L82 PathProgramCache]: Analyzing trace with hash -412511353, now seen corresponding path program 5 times [2020-04-18 15:31:08,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:08,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782828679] [2020-04-18 15:31:08,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:09,044 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 15:31:09,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782828679] [2020-04-18 15:31:09,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:09,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:31:09,046 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:09,047 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:09,052 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 80 transitions. [2020-04-18 15:31:09,052 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:09,088 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:31:09,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:31:09,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:31:09,089 INFO L87 Difference]: Start difference. First operand 496 states and 1183 transitions. Second operand 5 states. [2020-04-18 15:31:09,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:09,159 INFO L93 Difference]: Finished difference Result 572 states and 1279 transitions. [2020-04-18 15:31:09,159 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1279 transitions. [2020-04-18 15:31:09,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:31:09,161 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:31:09,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:09,161 INFO L82 PathProgramCache]: Analyzing trace with hash -108347591, now seen corresponding path program 6 times [2020-04-18 15:31:09,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:09,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151987059] [2020-04-18 15:31:09,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:09,222 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 15:31:09,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151987059] [2020-04-18 15:31:09,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:09,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:31:09,224 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:09,225 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:09,229 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 78 transitions. [2020-04-18 15:31:09,230 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:09,271 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:31:09,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:31:09,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:31:09,271 INFO L87 Difference]: Start difference. First operand 572 states and 1279 transitions. Second operand 7 states. [2020-04-18 15:31:09,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:09,390 INFO L93 Difference]: Finished difference Result 583 states and 1285 transitions. [2020-04-18 15:31:09,390 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1285 transitions. [2020-04-18 15:31:09,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:31:09,393 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:31:09,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:09,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1298646435, now seen corresponding path program 7 times [2020-04-18 15:31:09,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:09,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631521735] [2020-04-18 15:31:09,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:09,428 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 15:31:09,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631521735] [2020-04-18 15:31:09,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:09,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:31:09,429 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:09,431 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:09,436 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 25 transitions. [2020-04-18 15:31:09,436 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:09,476 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:31:09,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:31:09,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:31:09,477 INFO L87 Difference]: Start difference. First operand 583 states and 1285 transitions. Second operand 4 states. [2020-04-18 15:31:09,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:09,510 INFO L93 Difference]: Finished difference Result 834 states and 1789 transitions. [2020-04-18 15:31:09,511 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1789 transitions. [2020-04-18 15:31:09,514 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:31:09,515 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1759301551] [2020-04-18 15:31:09,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:31:09,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:31:09,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1759301551] [2020-04-18 15:31:09,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 15:31:09,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:31:09,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 15:31:09,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:31:09,518 INFO L87 Difference]: Start difference. First operand 78 states and 162 transitions. Second operand 13 states. [2020-04-18 15:31:10,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:10,393 INFO L93 Difference]: Finished difference Result 141 states and 269 transitions. [2020-04-18 15:31:10,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-04-18 15:31:10,393 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-04-18 15:31:10,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:31:10,394 INFO L225 Difference]: With dead ends: 141 [2020-04-18 15:31:10,394 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:31:10,396 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=581, Invalid=2611, Unknown=0, NotChecked=0, Total=3192 [2020-04-18 15:31:10,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:31:10,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:31:10,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:31:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:31:10,397 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-18 15:31:10,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:31:10,397 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:31:10,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 15:31:10,398 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:31:10,398 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:31:10,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:31:10 BasicIcfg [2020-04-18 15:31:10,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:31:10,409 INFO L168 Benchmark]: Toolchain (without parser) took 7169.99 ms. Allocated memory was 145.2 MB in the beginning and 282.1 MB in the end (delta: 136.8 MB). Free memory was 101.5 MB in the beginning and 149.6 MB in the end (delta: -48.1 MB). Peak memory consumption was 88.8 MB. Max. memory is 7.1 GB. [2020-04-18 15:31:10,414 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 15:31:10,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.18 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.6 MB in the beginning and 158.9 MB in the end (delta: -59.3 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:31:10,415 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.39 ms. Allocated memory is still 201.9 MB. Free memory was 158.9 MB in the beginning and 156.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:31:10,416 INFO L168 Benchmark]: Boogie Preprocessor took 27.27 ms. Allocated memory is still 201.9 MB. Free memory was 156.7 MB in the beginning and 155.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:31:10,416 INFO L168 Benchmark]: RCFGBuilder took 485.75 ms. Allocated memory is still 201.9 MB. Free memory was 154.7 MB in the beginning and 133.2 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:31:10,419 INFO L168 Benchmark]: TraceAbstraction took 5916.98 ms. Allocated memory was 201.9 MB in the beginning and 282.1 MB in the end (delta: 80.2 MB). Free memory was 132.6 MB in the beginning and 149.6 MB in the end (delta: -17.0 MB). Peak memory consumption was 63.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:31:10,425 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 665.18 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.6 MB in the beginning and 158.9 MB in the end (delta: -59.3 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.39 ms. Allocated memory is still 201.9 MB. Free memory was 158.9 MB in the beginning and 156.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.27 ms. Allocated memory is still 201.9 MB. Free memory was 156.7 MB in the beginning and 155.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.75 ms. Allocated memory is still 201.9 MB. Free memory was 154.7 MB in the beginning and 133.2 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5916.98 ms. Allocated memory was 201.9 MB in the beginning and 282.1 MB in the end (delta: 80.2 MB). Free memory was 132.6 MB in the beginning and 149.6 MB in the end (delta: -17.0 MB). Peak memory consumption was 63.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 583 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2133 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 107 SDtfs, 312 SDslu, 324 SDs, 0 SdLazy, 342 SolverSat, 92 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 359 GetRequests, 258 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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...