/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-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 15:34:34,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 15:34:34,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 15:34:34,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 15:34:34,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 15:34:34,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 15:34:34,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 15:34:34,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 15:34:34,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 15:34:34,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 15:34:34,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 15:34:34,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 15:34:34,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 15:34:34,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 15:34:34,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 15:34:34,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 15:34:34,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 15:34:34,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 15:34:34,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 15:34:34,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 15:34:34,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 15:34:34,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 15:34:34,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 15:34:34,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 15:34:34,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 15:34:34,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 15:34:34,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 15:34:34,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 15:34:34,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 15:34:34,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 15:34:34,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 15:34:34,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 15:34:34,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 15:34:34,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 15:34:34,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 15:34:34,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 15:34:34,316 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-WP.epf [2020-11-09 15:34:34,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 15:34:34,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 15:34:34,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 15:34:34,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 15:34:34,377 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 15:34:34,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 15:34:34,378 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 15:34:34,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 15:34:34,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 15:34:34,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 15:34:34,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 15:34:34,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 15:34:34,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 15:34:34,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 15:34:34,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 15:34:34,381 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 15:34:34,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 15:34:34,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 15:34:34,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 15:34:34,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 15:34:34,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 15:34:34,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:34:34,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 15:34:34,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 15:34:34,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 15:34:34,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 15:34:34,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 15:34:34,384 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 15:34:34,384 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 15:34:34,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 15:34:34,384 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 15:34:34,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 15:34:34,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 15:34:34,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 15:34:34,846 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 15:34:34,847 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 15:34:34,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2020-11-09 15:34:34,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ccfb1a54/58601b79a9e143e6bc64b42c4126d663/FLAGe46c8ed23 [2020-11-09 15:34:35,609 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 15:34:35,611 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2020-11-09 15:34:35,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ccfb1a54/58601b79a9e143e6bc64b42c4126d663/FLAGe46c8ed23 [2020-11-09 15:34:35,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ccfb1a54/58601b79a9e143e6bc64b42c4126d663 [2020-11-09 15:34:35,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 15:34:35,902 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 15:34:35,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 15:34:35,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 15:34:35,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 15:34:35,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:34:35" (1/1) ... [2020-11-09 15:34:35,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c1d69c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:34:35, skipping insertion in model container [2020-11-09 15:34:35,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:34:35" (1/1) ... [2020-11-09 15:34:35,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 15:34:35,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 15:34:36,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:34:36,568 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 15:34:36,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:34:36,752 INFO L208 MainTranslator]: Completed translation [2020-11-09 15:34:36,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:34:36 WrapperNode [2020-11-09 15:34:36,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 15:34:36,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 15:34:36,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 15:34:36,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 15:34:36,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:34:36" (1/1) ... [2020-11-09 15:34:36,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:34:36" (1/1) ... [2020-11-09 15:34:36,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 15:34:36,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 15:34:36,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 15:34:36,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 15:34:36,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:34:36" (1/1) ... [2020-11-09 15:34:36,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:34:36" (1/1) ... [2020-11-09 15:34:36,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:34:36" (1/1) ... [2020-11-09 15:34:36,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:34:36" (1/1) ... [2020-11-09 15:34:36,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:34:36" (1/1) ... [2020-11-09 15:34:36,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:34:36" (1/1) ... [2020-11-09 15:34:36,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:34:36" (1/1) ... [2020-11-09 15:34:36,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 15:34:36,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 15:34:36,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 15:34:36,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 15:34:36,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:34:36" (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 15:34:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 15:34:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 15:34:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 15:34:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 15:34:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 15:34:36,975 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 15:34:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 15:34:36,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 15:34:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 15:34:36,977 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 15:34:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 15:34:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 15:34:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 15:34:36,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 15:34:36,980 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 15:34:37,524 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 15:34:37,525 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 15:34:37,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:34:37 BoogieIcfgContainer [2020-11-09 15:34:37,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 15:34:37,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 15:34:37,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 15:34:37,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 15:34:37,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:34:35" (1/3) ... [2020-11-09 15:34:37,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1b6fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:34:37, skipping insertion in model container [2020-11-09 15:34:37,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:34:36" (2/3) ... [2020-11-09 15:34:37,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1b6fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:34:37, skipping insertion in model container [2020-11-09 15:34:37,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:34:37" (3/3) ... [2020-11-09 15:34:37,537 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2020-11-09 15:34:37,554 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 15:34:37,554 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 15:34:37,559 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 15:34:37,561 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 15:34:37,604 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,605 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,605 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,605 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,606 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,606 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,606 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,606 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,607 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,607 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,607 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,607 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,608 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,608 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,608 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,608 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,609 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,609 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,609 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,609 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,610 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,610 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,610 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,610 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,611 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,611 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,611 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,611 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,612 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,612 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,612 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,612 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,613 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,613 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,613 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,613 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,616 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,616 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,617 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,617 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,623 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,624 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,631 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,631 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,632 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,632 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:34:37,635 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 15:34:37,648 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 15:34:37,672 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:34:37,672 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:34:37,672 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:34:37,672 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:34:37,673 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:34:37,673 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:34:37,673 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:34:37,673 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:34:37,686 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:34:37,687 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 15:34:37,690 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 15:34:37,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 15:34:37,737 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 15:34:37,738 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 15:34:37,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 15:34:37,746 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 15:34:41,037 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-09 15:34:41,147 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 15:34:41,257 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-09 15:34:41,605 WARN L194 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-11-09 15:34:41,878 WARN L194 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-11-09 15:34:41,996 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 15:34:42,245 WARN L194 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-11-09 15:34:42,352 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 15:34:42,379 INFO L131 LiptonReduction]: Checked pairs total: 3181 [2020-11-09 15:34:42,379 INFO L133 LiptonReduction]: Total number of compositions: 74 [2020-11-09 15:34:42,387 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 15:34:42,415 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 15:34:42,417 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 15:34:42,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:34:42,425 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:34:42,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:34:42,426 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:34:42,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:34:42,433 INFO L82 PathProgramCache]: Analyzing trace with hash 2101373786, now seen corresponding path program 1 times [2020-11-09 15:34:42,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:34:42,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917428313] [2020-11-09 15:34:42,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:34:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:34:42,751 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 15:34:42,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917428313] [2020-11-09 15:34:42,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:34:42,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:34:42,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1123248823] [2020-11-09 15:34:42,757 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:34:42,762 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:34:42,778 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:34:42,779 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:34:42,786 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:34:42,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:34:42,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:34:42,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:34:42,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:34:42,814 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 15:34:42,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:34:42,880 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-09 15:34:42,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:34:42,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 15:34:42,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:34:42,898 INFO L225 Difference]: With dead ends: 282 [2020-11-09 15:34:42,898 INFO L226 Difference]: Without dead ends: 218 [2020-11-09 15:34:42,900 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 15:34:42,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-09 15:34:42,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-09 15:34:42,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-09 15:34:42,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-09 15:34:42,972 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-09 15:34:42,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:34:42,973 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-09 15:34:42,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:34:42,973 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-09 15:34:42,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 15:34:42,975 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:34:42,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:34:42,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 15:34:42,976 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:34:42,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:34:42,977 INFO L82 PathProgramCache]: Analyzing trace with hash 718076695, now seen corresponding path program 1 times [2020-11-09 15:34:42,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:34:42,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296975327] [2020-11-09 15:34:42,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:34:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:34:43,062 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 15:34:43,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296975327] [2020-11-09 15:34:43,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:34:43,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:34:43,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1763283998] [2020-11-09 15:34:43,063 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:34:43,064 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:34:43,067 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-11-09 15:34:43,067 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:34:43,078 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:34:43,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:34:43,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:34:43,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:34:43,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:34:43,082 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-11-09 15:34:43,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:34:43,121 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-11-09 15:34:43,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:34:43,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 15:34:43,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:34:43,124 INFO L225 Difference]: With dead ends: 242 [2020-11-09 15:34:43,124 INFO L226 Difference]: Without dead ends: 146 [2020-11-09 15:34:43,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 15:34:43,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-09 15:34:43,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-09 15:34:43,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-09 15:34:43,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-11-09 15:34:43,142 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-11-09 15:34:43,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:34:43,143 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-11-09 15:34:43,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:34:43,143 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-11-09 15:34:43,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 15:34:43,144 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:34:43,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:34:43,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 15:34:43,148 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:34:43,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:34:43,149 INFO L82 PathProgramCache]: Analyzing trace with hash -676988276, now seen corresponding path program 1 times [2020-11-09 15:34:43,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:34:43,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283484066] [2020-11-09 15:34:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:34:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:34:43,234 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 15:34:43,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283484066] [2020-11-09 15:34:43,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:34:43,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:34:43,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1269284442] [2020-11-09 15:34:43,235 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:34:43,237 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:34:43,241 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-11-09 15:34:43,241 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:34:43,383 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:34:43,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:34:43,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:34:43,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:34:43,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:34:43,388 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-11-09 15:34:43,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:34:43,409 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-11-09 15:34:43,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:34:43,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-09 15:34:43,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:34:43,412 INFO L225 Difference]: With dead ends: 144 [2020-11-09 15:34:43,413 INFO L226 Difference]: Without dead ends: 144 [2020-11-09 15:34:43,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 15:34:43,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-09 15:34:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-11-09 15:34:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-09 15:34:43,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-11-09 15:34:43,439 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-11-09 15:34:43,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:34:43,440 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-11-09 15:34:43,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:34:43,440 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-11-09 15:34:43,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 15:34:43,445 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:34:43,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:34:43,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 15:34:43,448 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:34:43,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:34:43,448 INFO L82 PathProgramCache]: Analyzing trace with hash 799592622, now seen corresponding path program 1 times [2020-11-09 15:34:43,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:34:43,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451055594] [2020-11-09 15:34:43,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:34:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:34:43,579 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 15:34:43,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451055594] [2020-11-09 15:34:43,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:34:43,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:34:43,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1908389470] [2020-11-09 15:34:43,581 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:34:43,585 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:34:43,591 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-11-09 15:34:43,592 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:34:43,909 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:34:43,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:34:43,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:34:43,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:34:43,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:34:43,910 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-11-09 15:34:43,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:34:43,947 INFO L93 Difference]: Finished difference Result 182 states and 430 transitions. [2020-11-09 15:34:43,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:34:43,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-09 15:34:43,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:34:43,949 INFO L225 Difference]: With dead ends: 182 [2020-11-09 15:34:43,949 INFO L226 Difference]: Without dead ends: 86 [2020-11-09 15:34:43,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 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 15:34:43,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-09 15:34:43,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-09 15:34:43,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-09 15:34:43,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2020-11-09 15:34:43,956 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 12 [2020-11-09 15:34:43,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:34:43,956 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2020-11-09 15:34:43,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:34:43,956 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2020-11-09 15:34:43,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 15:34:43,957 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:34:43,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:34:43,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 15:34:43,958 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:34:43,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:34:43,958 INFO L82 PathProgramCache]: Analyzing trace with hash -492629862, now seen corresponding path program 1 times [2020-11-09 15:34:43,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:34:43,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739197384] [2020-11-09 15:34:43,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:34:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:34:44,020 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 15:34:44,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739197384] [2020-11-09 15:34:44,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:34:44,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:34:44,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [686655483] [2020-11-09 15:34:44,021 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:34:44,023 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:34:44,027 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 47 transitions. [2020-11-09 15:34:44,027 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:34:44,080 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:34:44,123 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:34:44,165 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:34:44,181 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:34:44,201 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:34:44,255 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2745#(not (= 3 ~__unbuffered_cnt~0))] [2020-11-09 15:34:44,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:34:44,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:34:44,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:34:44,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:34:44,257 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand 5 states. [2020-11-09 15:34:44,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:34:44,353 INFO L93 Difference]: Finished difference Result 85 states and 168 transitions. [2020-11-09 15:34:44,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:34:44,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-09 15:34:44,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:34:44,355 INFO L225 Difference]: With dead ends: 85 [2020-11-09 15:34:44,355 INFO L226 Difference]: Without dead ends: 63 [2020-11-09 15:34:44,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:34:44,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-09 15:34:44,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-09 15:34:44,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-09 15:34:44,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 116 transitions. [2020-11-09 15:34:44,360 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 116 transitions. Word has length 13 [2020-11-09 15:34:44,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:34:44,360 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 116 transitions. [2020-11-09 15:34:44,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:34:44,360 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 116 transitions. [2020-11-09 15:34:44,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 15:34:44,361 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:34:44,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:34:44,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 15:34:44,362 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:34:44,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:34:44,362 INFO L82 PathProgramCache]: Analyzing trace with hash 493445752, now seen corresponding path program 1 times [2020-11-09 15:34:44,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:34:44,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397095333] [2020-11-09 15:34:44,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:34:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:34:44,469 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 15:34:44,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397095333] [2020-11-09 15:34:44,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:34:44,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 15:34:44,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1430203755] [2020-11-09 15:34:44,471 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:34:44,473 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:34:44,481 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 73 transitions. [2020-11-09 15:34:44,481 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:34:44,503 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:34:44,728 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [2967#(not (= 3 ~__unbuffered_cnt~0)), 2968#(not (= ~__unbuffered_cnt~0 2)), 2969#(not (= ~__unbuffered_cnt~0 1)), 2970#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 15:34:44,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-09 15:34:44,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:34:44,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-09 15:34:44,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-09 15:34:44,730 INFO L87 Difference]: Start difference. First operand 63 states and 116 transitions. Second operand 10 states. [2020-11-09 15:34:44,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:34:44,845 INFO L93 Difference]: Finished difference Result 60 states and 108 transitions. [2020-11-09 15:34:44,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:34:44,846 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-11-09 15:34:44,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:34:44,847 INFO L225 Difference]: With dead ends: 60 [2020-11-09 15:34:44,847 INFO L226 Difference]: Without dead ends: 54 [2020-11-09 15:34:44,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-11-09 15:34:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-09 15:34:44,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-09 15:34:44,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-09 15:34:44,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-11-09 15:34:44,850 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 15 [2020-11-09 15:34:44,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:34:44,851 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-11-09 15:34:44,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-09 15:34:44,851 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-11-09 15:34:44,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 15:34:44,852 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:34:44,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:34:44,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 15:34:44,852 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:34:44,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:34:44,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1724594669, now seen corresponding path program 1 times [2020-11-09 15:34:44,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:34:44,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020569535] [2020-11-09 15:34:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:34:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:34:44,885 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 15:34:44,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020569535] [2020-11-09 15:34:44,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:34:44,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:34:44,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1798993053] [2020-11-09 15:34:44,886 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:34:44,888 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:34:44,895 INFO L252 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-11-09 15:34:44,895 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:34:44,905 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:34:44,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:34:44,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:34:44,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:34:44,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:34:44,907 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 3 states. [2020-11-09 15:34:44,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:34:44,913 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2020-11-09 15:34:44,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:34:44,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-09 15:34:44,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:34:44,914 INFO L225 Difference]: With dead ends: 53 [2020-11-09 15:34:44,914 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 15:34:44,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 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 15:34:44,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 15:34:44,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 15:34:44,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 15:34:44,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 15:34:44,915 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 15:34:44,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:34:44,916 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 15:34:44,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:34:44,916 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 15:34:44,916 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 15:34:44,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 15:34:44,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:34:44 BasicIcfg [2020-11-09 15:34:44,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 15:34:44,921 INFO L168 Benchmark]: Toolchain (without parser) took 9023.42 ms. Allocated memory was 156.2 MB in the beginning and 234.9 MB in the end (delta: 78.6 MB). Free memory was 129.6 MB in the beginning and 128.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 80.4 MB. Max. memory is 8.0 GB. [2020-11-09 15:34:44,922 INFO L168 Benchmark]: CDTParser took 0.85 ms. Allocated memory is still 125.8 MB. Free memory is still 80.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:34:44,923 INFO L168 Benchmark]: CACSL2BoogieTranslator took 849.17 ms. Allocated memory is still 156.2 MB. Free memory was 129.2 MB in the beginning and 98.3 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-11-09 15:34:44,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.78 ms. Allocated memory is still 156.2 MB. Free memory was 98.3 MB in the beginning and 138.7 MB in the end (delta: -40.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 8.0 GB. [2020-11-09 15:34:44,924 INFO L168 Benchmark]: Boogie Preprocessor took 31.05 ms. Allocated memory is still 156.2 MB. Free memory was 138.7 MB in the beginning and 137.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:34:44,925 INFO L168 Benchmark]: RCFGBuilder took 645.35 ms. Allocated memory is still 156.2 MB. Free memory was 137.5 MB in the beginning and 115.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:34:44,926 INFO L168 Benchmark]: TraceAbstraction took 7390.38 ms. Allocated memory was 156.2 MB in the beginning and 234.9 MB in the end (delta: 78.6 MB). Free memory was 115.0 MB in the beginning and 128.6 MB in the end (delta: -13.6 MB). Peak memory consumption was 64.5 MB. Max. memory is 8.0 GB. [2020-11-09 15:34:44,929 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.85 ms. Allocated memory is still 125.8 MB. Free memory is still 80.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 849.17 ms. Allocated memory is still 156.2 MB. Free memory was 129.2 MB in the beginning and 98.3 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 95.78 ms. Allocated memory is still 156.2 MB. Free memory was 98.3 MB in the beginning and 138.7 MB in the end (delta: -40.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.05 ms. Allocated memory is still 156.2 MB. Free memory was 138.7 MB in the beginning and 137.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 645.35 ms. Allocated memory is still 156.2 MB. Free memory was 137.5 MB in the beginning and 115.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7390.38 ms. Allocated memory was 156.2 MB in the beginning and 234.9 MB in the end (delta: 78.6 MB). Free memory was 115.0 MB in the beginning and 128.6 MB in the end (delta: -13.6 MB). Peak memory consumption was 64.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 814 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 59 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.6s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 74 TotalNumberOfCompositions, 3181 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 118 SDtfs, 117 SDslu, 159 SDs, 0 SdLazy, 99 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 92 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2374 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...