/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 17:04:21,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 17:04:21,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 17:04:21,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 17:04:21,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 17:04:21,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 17:04:21,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 17:04:21,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 17:04:21,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 17:04:21,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 17:04:21,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 17:04:21,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 17:04:21,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 17:04:21,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 17:04:21,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 17:04:21,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 17:04:21,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 17:04:21,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 17:04:21,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 17:04:21,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 17:04:21,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 17:04:21,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 17:04:21,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 17:04:21,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 17:04:21,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 17:04:21,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 17:04:21,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 17:04:21,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 17:04:21,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 17:04:21,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 17:04:21,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 17:04:21,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 17:04:21,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 17:04:21,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 17:04:21,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 17:04:21,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 17:04:21,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 17:04:21,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 17:04:21,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 17:04:21,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 17:04:21,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 17:04:21,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-11-09 17:04:22,006 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 17:04:22,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 17:04:22,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 17:04:22,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 17:04:22,011 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 17:04:22,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 17:04:22,011 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 17:04:22,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 17:04:22,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 17:04:22,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 17:04:22,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 17:04:22,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 17:04:22,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 17:04:22,014 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 17:04:22,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 17:04:22,014 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 17:04:22,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 17:04:22,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 17:04:22,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 17:04:22,015 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 17:04:22,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 17:04:22,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:04:22,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 17:04:22,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 17:04:22,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 17:04:22,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 17:04:22,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 17:04:22,016 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 17:04:22,016 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 17:04:22,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 17:04:22,017 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 17:04:22,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 17:04:22,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 17:04:22,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 17:04:22,419 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 17:04:22,420 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 17:04:22,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-11-09 17:04:22,498 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acf3d2552/580e96501fc74dc98e9a0576da976655/FLAG2776b56d1 [2020-11-09 17:04:23,251 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 17:04:23,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-11-09 17:04:23,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acf3d2552/580e96501fc74dc98e9a0576da976655/FLAG2776b56d1 [2020-11-09 17:04:23,507 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acf3d2552/580e96501fc74dc98e9a0576da976655 [2020-11-09 17:04:23,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 17:04:23,521 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 17:04:23,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 17:04:23,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 17:04:23,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 17:04:23,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:04:23" (1/1) ... [2020-11-09 17:04:23,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379e64d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:23, skipping insertion in model container [2020-11-09 17:04:23,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:04:23" (1/1) ... [2020-11-09 17:04:23,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 17:04:23,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 17:04:23,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:04:23,939 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 17:04:23,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:04:24,108 INFO L208 MainTranslator]: Completed translation [2020-11-09 17:04:24,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:24 WrapperNode [2020-11-09 17:04:24,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 17:04:24,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 17:04:24,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 17:04:24,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 17:04:24,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:24" (1/1) ... [2020-11-09 17:04:24,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:24" (1/1) ... [2020-11-09 17:04:24,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 17:04:24,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 17:04:24,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 17:04:24,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 17:04:24,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:24" (1/1) ... [2020-11-09 17:04:24,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:24" (1/1) ... [2020-11-09 17:04:24,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:24" (1/1) ... [2020-11-09 17:04:24,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:24" (1/1) ... [2020-11-09 17:04:24,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:24" (1/1) ... [2020-11-09 17:04:24,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:24" (1/1) ... [2020-11-09 17:04:24,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:24" (1/1) ... [2020-11-09 17:04:24,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 17:04:24,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 17:04:24,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 17:04:24,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 17:04:24,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:24" (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 [2020-11-09 17:04:24,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 17:04:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 17:04:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 17:04:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 17:04:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 17:04:24,314 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 17:04:24,314 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 17:04:24,314 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 17:04:24,314 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 17:04:24,314 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 17:04:24,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 17:04:24,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 17:04:24,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 17:04:24,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 17:04:24,317 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 17:04:24,830 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 17:04:24,830 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 17:04:24,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:04:24 BoogieIcfgContainer [2020-11-09 17:04:24,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 17:04:24,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 17:04:24,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 17:04:24,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 17:04:24,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:04:23" (1/3) ... [2020-11-09 17:04:24,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628e029f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:04:24, skipping insertion in model container [2020-11-09 17:04:24,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:24" (2/3) ... [2020-11-09 17:04:24,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628e029f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:04:24, skipping insertion in model container [2020-11-09 17:04:24,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:04:24" (3/3) ... [2020-11-09 17:04:24,846 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.oepc.i [2020-11-09 17:04:24,863 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 17:04:24,863 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 17:04:24,868 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 17:04:24,869 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 17:04:24,914 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,915 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,915 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,915 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,916 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,916 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,916 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,916 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,917 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,917 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,917 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,917 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,919 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,919 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,919 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,919 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,919 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,920 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,920 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,920 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,920 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,922 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,923 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,923 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,925 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,925 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,925 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,925 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,926 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,926 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,927 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,927 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,935 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,936 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,936 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,942 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,943 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,943 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,943 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,946 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,946 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,946 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,946 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:04:24,948 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 17:04:24,960 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 17:04:24,996 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:04:24,996 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:04:24,996 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:04:24,997 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:04:24,997 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:04:24,997 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:04:24,997 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:04:24,997 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:04:25,013 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:04:25,013 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 17:04:25,016 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 17:04:25,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-09 17:04:25,069 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-09 17:04:25,069 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 17:04:25,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 17:04:25,078 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 17:04:28,221 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-09 17:04:28,325 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 17:04:28,428 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-09 17:04:28,906 WARN L194 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-09 17:04:29,027 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 17:04:29,242 WARN L194 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-09 17:04:29,363 INFO L131 LiptonReduction]: Checked pairs total: 3321 [2020-11-09 17:04:29,364 INFO L133 LiptonReduction]: Total number of compositions: 75 [2020-11-09 17:04:29,370 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 17:04:29,397 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 17:04:29,399 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 17:04:29,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:04:29,406 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:04:29,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:04:29,407 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:04:29,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:04:29,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1248499387, now seen corresponding path program 1 times [2020-11-09 17:04:29,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:04:29,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16404502] [2020-11-09 17:04:29,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:04:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:04:29,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:04:29,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16404502] [2020-11-09 17:04:29,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:04:29,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:04:29,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [158182737] [2020-11-09 17:04:29,721 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:04:29,724 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:04:29,742 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 17:04:29,742 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:04:29,748 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:04:29,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:04:29,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:04:29,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:04:29,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:04:29,773 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 17:04:29,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:04:29,833 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-11-09 17:04:29,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:04:29,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 17:04:29,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:04:29,852 INFO L225 Difference]: With dead ends: 290 [2020-11-09 17:04:29,853 INFO L226 Difference]: Without dead ends: 226 [2020-11-09 17:04:29,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:04:29,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-09 17:04:29,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-09 17:04:29,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-09 17:04:29,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-11-09 17:04:29,920 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-11-09 17:04:29,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:04:29,921 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-11-09 17:04:29,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:04:29,921 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-11-09 17:04:29,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 17:04:29,922 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:04:29,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:04:29,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 17:04:29,923 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:04:29,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:04:29,924 INFO L82 PathProgramCache]: Analyzing trace with hash 30655995, now seen corresponding path program 1 times [2020-11-09 17:04:29,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:04:29,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713561662] [2020-11-09 17:04:29,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:04:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:04:30,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:04:30,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713561662] [2020-11-09 17:04:30,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:04:30,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:04:30,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [286481461] [2020-11-09 17:04:30,001 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:04:30,002 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:04:30,005 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-11-09 17:04:30,005 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:04:30,041 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:04:30,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:04:30,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:04:30,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:04:30,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:04:30,046 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-11-09 17:04:30,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:04:30,060 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-11-09 17:04:30,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:04:30,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 17:04:30,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:04:30,064 INFO L225 Difference]: With dead ends: 220 [2020-11-09 17:04:30,064 INFO L226 Difference]: Without dead ends: 220 [2020-11-09 17:04:30,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:04:30,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-11-09 17:04:30,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-11-09 17:04:30,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-11-09 17:04:30,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-11-09 17:04:30,101 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-11-09 17:04:30,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:04:30,101 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-11-09 17:04:30,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:04:30,102 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-11-09 17:04:30,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 17:04:30,103 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:04:30,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:04:30,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 17:04:30,104 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:04:30,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:04:30,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1213087086, now seen corresponding path program 1 times [2020-11-09 17:04:30,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:04:30,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713990712] [2020-11-09 17:04:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:04:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:04:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:04:30,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713990712] [2020-11-09 17:04:30,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:04:30,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:04:30,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [225119353] [2020-11-09 17:04:30,215 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:04:30,216 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:04:30,220 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 30 transitions. [2020-11-09 17:04:30,220 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:04:30,282 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:04:30,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:04:30,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:04:30,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:04:30,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:04:30,287 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 3 states. [2020-11-09 17:04:30,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:04:30,306 INFO L93 Difference]: Finished difference Result 296 states and 766 transitions. [2020-11-09 17:04:30,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:04:30,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-09 17:04:30,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:04:30,309 INFO L225 Difference]: With dead ends: 296 [2020-11-09 17:04:30,309 INFO L226 Difference]: Without dead ends: 236 [2020-11-09 17:04:30,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:04:30,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-11-09 17:04:30,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 212. [2020-11-09 17:04:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-11-09 17:04:30,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 548 transitions. [2020-11-09 17:04:30,325 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 548 transitions. Word has length 10 [2020-11-09 17:04:30,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:04:30,326 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 548 transitions. [2020-11-09 17:04:30,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:04:30,326 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 548 transitions. [2020-11-09 17:04:30,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 17:04:30,327 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:04:30,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:04:30,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 17:04:30,328 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:04:30,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:04:30,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1780128980, now seen corresponding path program 1 times [2020-11-09 17:04:30,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:04:30,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887219022] [2020-11-09 17:04:30,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:04:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:04:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:04:30,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887219022] [2020-11-09 17:04:30,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:04:30,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:04:30,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [751228065] [2020-11-09 17:04:30,383 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:04:30,384 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:04:30,391 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 37 transitions. [2020-11-09 17:04:30,391 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:04:30,541 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:04:30,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:04:30,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:04:30,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:04:30,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:04:30,546 INFO L87 Difference]: Start difference. First operand 212 states and 548 transitions. Second operand 3 states. [2020-11-09 17:04:30,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:04:30,580 INFO L93 Difference]: Finished difference Result 203 states and 518 transitions. [2020-11-09 17:04:30,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:04:30,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-09 17:04:30,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:04:30,586 INFO L225 Difference]: With dead ends: 203 [2020-11-09 17:04:30,586 INFO L226 Difference]: Without dead ends: 203 [2020-11-09 17:04:30,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:04:30,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-11-09 17:04:30,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-11-09 17:04:30,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-11-09 17:04:30,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 518 transitions. [2020-11-09 17:04:30,602 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 518 transitions. Word has length 10 [2020-11-09 17:04:30,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:04:30,603 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 518 transitions. [2020-11-09 17:04:30,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:04:30,603 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 518 transitions. [2020-11-09 17:04:30,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 17:04:30,606 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:04:30,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:04:30,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 17:04:30,606 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:04:30,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:04:30,607 INFO L82 PathProgramCache]: Analyzing trace with hash -650577484, now seen corresponding path program 1 times [2020-11-09 17:04:30,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:04:30,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871696973] [2020-11-09 17:04:30,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:04:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:04:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:04:30,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871696973] [2020-11-09 17:04:30,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:04:30,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:04:30,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1106430243] [2020-11-09 17:04:30,688 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:04:30,689 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:04:30,692 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 57 transitions. [2020-11-09 17:04:30,692 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:04:30,804 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:04:30,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:04:30,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:04:30,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:04:30,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:04:30,805 INFO L87 Difference]: Start difference. First operand 203 states and 518 transitions. Second operand 4 states. [2020-11-09 17:04:30,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:04:30,826 INFO L93 Difference]: Finished difference Result 240 states and 585 transitions. [2020-11-09 17:04:30,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:04:30,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 17:04:30,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:04:30,827 INFO L225 Difference]: With dead ends: 240 [2020-11-09 17:04:30,828 INFO L226 Difference]: Without dead ends: 144 [2020-11-09 17:04:30,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:04:30,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-09 17:04:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-11-09 17:04:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-09 17:04:30,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 331 transitions. [2020-11-09 17:04:30,834 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 331 transitions. Word has length 11 [2020-11-09 17:04:30,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:04:30,834 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 331 transitions. [2020-11-09 17:04:30,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:04:30,834 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 331 transitions. [2020-11-09 17:04:30,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 17:04:30,835 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:04:30,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:04:30,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 17:04:30,835 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:04:30,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:04:30,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1306895020, now seen corresponding path program 1 times [2020-11-09 17:04:30,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:04:30,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131953017] [2020-11-09 17:04:30,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:04:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:04:30,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:04:30,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131953017] [2020-11-09 17:04:30,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:04:30,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:04:30,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [361184046] [2020-11-09 17:04:30,904 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:04:30,905 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:04:30,909 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-11-09 17:04:30,909 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:04:30,920 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:04:30,948 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:04:30,960 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:04:30,999 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:04:31,035 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:04:31,071 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:04:31,084 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:04:31,153 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3965#(not (= 3 ~__unbuffered_cnt~0))] [2020-11-09 17:04:31,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:04:31,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:04:31,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:04:31,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:04:31,154 INFO L87 Difference]: Start difference. First operand 144 states and 331 transitions. Second operand 5 states. [2020-11-09 17:04:31,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:04:31,254 INFO L93 Difference]: Finished difference Result 137 states and 287 transitions. [2020-11-09 17:04:31,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 17:04:31,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 17:04:31,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:04:31,255 INFO L225 Difference]: With dead ends: 137 [2020-11-09 17:04:31,255 INFO L226 Difference]: Without dead ends: 97 [2020-11-09 17:04:31,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:04:31,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-09 17:04:31,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-09 17:04:31,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-09 17:04:31,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 186 transitions. [2020-11-09 17:04:31,264 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 186 transitions. Word has length 12 [2020-11-09 17:04:31,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:04:31,267 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 186 transitions. [2020-11-09 17:04:31,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:04:31,267 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 186 transitions. [2020-11-09 17:04:31,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 17:04:31,268 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:04:31,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:04:31,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 17:04:31,268 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:04:31,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:04:31,269 INFO L82 PathProgramCache]: Analyzing trace with hash 111718158, now seen corresponding path program 1 times [2020-11-09 17:04:31,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:04:31,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382957168] [2020-11-09 17:04:31,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:04:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:04:31,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:04:31,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382957168] [2020-11-09 17:04:31,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:04:31,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:04:31,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2061225943] [2020-11-09 17:04:31,330 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:04:31,333 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:04:31,335 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-11-09 17:04:31,336 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:04:31,336 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:04:31,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:04:31,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:04:31,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:04:31,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:04:31,341 INFO L87 Difference]: Start difference. First operand 97 states and 186 transitions. Second operand 3 states. [2020-11-09 17:04:31,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:04:31,356 INFO L93 Difference]: Finished difference Result 101 states and 184 transitions. [2020-11-09 17:04:31,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:04:31,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-09 17:04:31,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:04:31,358 INFO L225 Difference]: With dead ends: 101 [2020-11-09 17:04:31,358 INFO L226 Difference]: Without dead ends: 73 [2020-11-09 17:04:31,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:04:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-09 17:04:31,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-11-09 17:04:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-09 17:04:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 124 transitions. [2020-11-09 17:04:31,363 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 124 transitions. Word has length 14 [2020-11-09 17:04:31,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:04:31,366 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 124 transitions. [2020-11-09 17:04:31,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:04:31,366 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 124 transitions. [2020-11-09 17:04:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 17:04:31,367 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:04:31,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:04:31,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 17:04:31,367 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:04:31,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:04:31,368 INFO L82 PathProgramCache]: Analyzing trace with hash 567564355, now seen corresponding path program 1 times [2020-11-09 17:04:31,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:04:31,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903829365] [2020-11-09 17:04:31,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:04:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:04:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:04:31,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903829365] [2020-11-09 17:04:31,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:04:31,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 17:04:31,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [167794878] [2020-11-09 17:04:31,470 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:04:31,472 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:04:31,480 INFO L252 McrAutomatonBuilder]: Finished intersection with 57 states and 102 transitions. [2020-11-09 17:04:31,480 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:04:31,489 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:04:31,611 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4555#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 17:04:31,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 17:04:31,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:04:31,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 17:04:31,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:04:31,613 INFO L87 Difference]: Start difference. First operand 72 states and 124 transitions. Second operand 7 states. [2020-11-09 17:04:31,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:04:31,648 INFO L93 Difference]: Finished difference Result 67 states and 118 transitions. [2020-11-09 17:04:31,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 17:04:31,648 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-09 17:04:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:04:31,649 INFO L225 Difference]: With dead ends: 67 [2020-11-09 17:04:31,649 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 17:04:31,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-09 17:04:31,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 17:04:31,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 17:04:31,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 17:04:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 17:04:31,650 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-09 17:04:31,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:04:31,650 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 17:04:31,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 17:04:31,650 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 17:04:31,650 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 17:04:31,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 17:04:31,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:04:31 BasicIcfg [2020-11-09 17:04:31,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 17:04:31,655 INFO L168 Benchmark]: Toolchain (without parser) took 8138.53 ms. Allocated memory was 154.1 MB in the beginning and 230.7 MB in the end (delta: 76.5 MB). Free memory was 127.4 MB in the beginning and 84.0 MB in the end (delta: 43.4 MB). Peak memory consumption was 120.4 MB. Max. memory is 8.0 GB. [2020-11-09 17:04:31,656 INFO L168 Benchmark]: CDTParser took 0.70 ms. Allocated memory is still 154.1 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:04:31,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.44 ms. Allocated memory is still 154.1 MB. Free memory was 126.8 MB in the beginning and 129.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 29.2 MB. Max. memory is 8.0 GB. [2020-11-09 17:04:31,657 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.42 ms. Allocated memory is still 154.1 MB. Free memory was 129.1 MB in the beginning and 127.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:04:31,658 INFO L168 Benchmark]: Boogie Preprocessor took 44.23 ms. Allocated memory is still 154.1 MB. Free memory was 127.3 MB in the beginning and 125.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:04:31,659 INFO L168 Benchmark]: RCFGBuilder took 603.91 ms. Allocated memory is still 154.1 MB. Free memory was 125.9 MB in the beginning and 103.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:04:31,660 INFO L168 Benchmark]: TraceAbstraction took 6816.02 ms. Allocated memory was 154.1 MB in the beginning and 230.7 MB in the end (delta: 76.5 MB). Free memory was 102.9 MB in the beginning and 84.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 95.4 MB. Max. memory is 8.0 GB. [2020-11-09 17:04:31,663 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70 ms. Allocated memory is still 154.1 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 585.44 ms. Allocated memory is still 154.1 MB. Free memory was 126.8 MB in the beginning and 129.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 29.2 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 76.42 ms. Allocated memory is still 154.1 MB. Free memory was 129.1 MB in the beginning and 127.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.23 ms. Allocated memory is still 154.1 MB. Free memory was 127.3 MB in the beginning and 125.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 603.91 ms. Allocated memory is still 154.1 MB. Free memory was 125.9 MB in the beginning and 103.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6816.02 ms. Allocated memory was 154.1 MB in the beginning and 230.7 MB in the end (delta: 76.5 MB). Free memory was 102.9 MB in the beginning and 84.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 95.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 803 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 56 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.3s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 75 TotalNumberOfCompositions, 3321 MoverChecksTotal - PositiveResult [Line: 17]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 149 SDtfs, 83 SDslu, 152 SDs, 0 SdLazy, 67 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 89 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 2465 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...