/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/safe034_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 15:45:33,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 15:45:33,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 15:45:33,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 15:45:33,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 15:45:33,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 15:45:33,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 15:45:33,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 15:45:33,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 15:45:33,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 15:45:33,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 15:45:33,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 15:45:33,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 15:45:33,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 15:45:33,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 15:45:33,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 15:45:33,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 15:45:33,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 15:45:33,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 15:45:33,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 15:45:33,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 15:45:33,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 15:45:33,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 15:45:33,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 15:45:33,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 15:45:33,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 15:45:33,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 15:45:33,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 15:45:33,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 15:45:33,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 15:45:33,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 15:45:33,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 15:45:33,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 15:45:33,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 15:45:33,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 15:45:33,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 15:45:33,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 15:45:33,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 15:45:33,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 15:45:33,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 15:45:33,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 15:45:33,725 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 15:45:33,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 15:45:33,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 15:45:33,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 15:45:33,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 15:45:33,753 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 15:45:33,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 15:45:33,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 15:45:33,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 15:45:33,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 15:45:33,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 15:45:33,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 15:45:33,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 15:45:33,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 15:45:33,755 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 15:45:33,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 15:45:33,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 15:45:33,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 15:45:33,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 15:45:33,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 15:45:33,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 15:45:33,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 15:45:33,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:45:33,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 15:45:33,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 15:45:33,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 15:45:33,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 15:45:33,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 15:45:33,759 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 15:45:33,759 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 15:45:33,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 15:45:33,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 15:45:34,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 15:45:34,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 15:45:34,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 15:45:34,171 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 15:45:34,172 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 15:45:34,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2020-11-09 15:45:34,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9415a9e77/5b7553ed62394b30a0134d912f513402/FLAG93b2f7db6 [2020-11-09 15:45:35,049 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 15:45:35,049 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2020-11-09 15:45:35,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9415a9e77/5b7553ed62394b30a0134d912f513402/FLAG93b2f7db6 [2020-11-09 15:45:35,345 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9415a9e77/5b7553ed62394b30a0134d912f513402 [2020-11-09 15:45:35,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 15:45:35,363 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 15:45:35,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 15:45:35,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 15:45:35,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 15:45:35,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:45:35" (1/1) ... [2020-11-09 15:45:35,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c08714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:35, skipping insertion in model container [2020-11-09 15:45:35,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:45:35" (1/1) ... [2020-11-09 15:45:35,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 15:45:35,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 15:45:36,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:45:36,093 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 15:45:36,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:45:36,299 INFO L208 MainTranslator]: Completed translation [2020-11-09 15:45:36,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:36 WrapperNode [2020-11-09 15:45:36,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 15:45:36,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 15:45:36,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 15:45:36,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 15:45:36,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:36" (1/1) ... [2020-11-09 15:45:36,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:36" (1/1) ... [2020-11-09 15:45:36,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 15:45:36,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 15:45:36,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 15:45:36,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 15:45:36,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:36" (1/1) ... [2020-11-09 15:45:36,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:36" (1/1) ... [2020-11-09 15:45:36,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:36" (1/1) ... [2020-11-09 15:45:36,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:36" (1/1) ... [2020-11-09 15:45:36,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:36" (1/1) ... [2020-11-09 15:45:36,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:36" (1/1) ... [2020-11-09 15:45:36,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:36" (1/1) ... [2020-11-09 15:45:36,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 15:45:36,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 15:45:36,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 15:45:36,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 15:45:36,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:36" (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 15:45:36,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 15:45:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 15:45:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 15:45:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 15:45:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 15:45:36,478 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 15:45:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 15:45:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 15:45:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 15:45:36,480 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 15:45:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 15:45:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 15:45:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 15:45:36,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 15:45:36,483 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 15:45:36,880 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 15:45:36,880 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 15:45:36,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:45:36 BoogieIcfgContainer [2020-11-09 15:45:36,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 15:45:36,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 15:45:36,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 15:45:36,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 15:45:36,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:45:35" (1/3) ... [2020-11-09 15:45:36,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b73cb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:45:36, skipping insertion in model container [2020-11-09 15:45:36,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:36" (2/3) ... [2020-11-09 15:45:36,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b73cb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:45:36, skipping insertion in model container [2020-11-09 15:45:36,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:45:36" (3/3) ... [2020-11-09 15:45:36,893 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.oepc.i [2020-11-09 15:45:36,912 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 15:45:36,912 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 15:45:36,917 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 15:45:36,918 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 15:45:36,950 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,951 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,951 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,951 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,952 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,952 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,952 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,952 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,953 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,953 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,954 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,954 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,954 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,955 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,955 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,955 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,955 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,956 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,956 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,956 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,957 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,957 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,957 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,958 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,958 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,958 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,959 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,959 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,959 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,959 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,960 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,960 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,960 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,961 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,961 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,961 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,964 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,964 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,964 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,965 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,971 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,971 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,972 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,972 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,978 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,978 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,979 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,979 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:36,981 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 15:45:36,997 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 15:45:37,023 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:45:37,024 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:45:37,024 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:45:37,024 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:45:37,025 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:45:37,025 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:45:37,025 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:45:37,025 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:45:37,040 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:45:37,041 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 15:45:37,045 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 15:45:37,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 15:45:37,096 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 15:45:37,097 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 15:45:37,105 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 61 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 15:45:37,108 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 15:45:40,232 WARN L194 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-09 15:45:40,346 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 15:45:40,550 WARN L194 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-09 15:45:40,680 INFO L131 LiptonReduction]: Checked pairs total: 2658 [2020-11-09 15:45:40,681 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-11-09 15:45:40,688 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-09 15:45:40,721 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-09 15:45:40,724 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-09 15:45:40,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:45:40,732 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:45:40,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:45:40,734 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:45:40,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:45:40,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1479466227, now seen corresponding path program 1 times [2020-11-09 15:45:40,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:45:40,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275777504] [2020-11-09 15:45:40,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:45:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:45:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:45:40,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275777504] [2020-11-09 15:45:40,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:45:40,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:45:40,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1132476985] [2020-11-09 15:45:40,967 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:45:40,970 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:45:40,985 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:45:40,985 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:45:40,989 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:45:40,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 15:45:40,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:45:41,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 15:45:41,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 15:45:41,011 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-09 15:45:41,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:45:41,035 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-09 15:45:41,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 15:45:41,038 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 15:45:41,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:45:41,055 INFO L225 Difference]: With dead ends: 362 [2020-11-09 15:45:41,056 INFO L226 Difference]: Without dead ends: 298 [2020-11-09 15:45:41,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 15:45:41,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-09 15:45:41,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-09 15:45:41,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-09 15:45:41,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-09 15:45:41,143 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-09 15:45:41,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:45:41,144 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-09 15:45:41,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 15:45:41,144 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-09 15:45:41,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 15:45:41,145 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:45:41,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:45:41,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 15:45:41,146 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:45:41,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:45:41,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1381176445, now seen corresponding path program 1 times [2020-11-09 15:45:41,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:45:41,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738036997] [2020-11-09 15:45:41,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:45:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:45:41,369 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 15:45:41,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738036997] [2020-11-09 15:45:41,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:45:41,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:45:41,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [129929110] [2020-11-09 15:45:41,371 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:45:41,373 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:45:41,375 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-11-09 15:45:41,375 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:45:41,380 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:45:41,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:45:41,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:45:41,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:45:41,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:45:41,383 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-11-09 15:45:41,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:45:41,446 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-11-09 15:45:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:45:41,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 15:45:41,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:45:41,451 INFO L225 Difference]: With dead ends: 346 [2020-11-09 15:45:41,451 INFO L226 Difference]: Without dead ends: 282 [2020-11-09 15:45:41,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:45:41,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-11-09 15:45:41,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-11-09 15:45:41,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-11-09 15:45:41,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-11-09 15:45:41,475 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-11-09 15:45:41,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:45:41,475 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-11-09 15:45:41,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:45:41,475 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-11-09 15:45:41,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 15:45:41,477 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:45:41,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:45:41,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 15:45:41,478 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:45:41,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:45:41,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1310825236, now seen corresponding path program 1 times [2020-11-09 15:45:41,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:45:41,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775395493] [2020-11-09 15:45:41,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:45:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:45:41,543 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 15:45:41,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775395493] [2020-11-09 15:45:41,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:45:41,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:45:41,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1956054670] [2020-11-09 15:45:41,545 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:45:41,546 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:45:41,548 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-11-09 15:45:41,548 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:45:41,592 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:45:41,650 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:45:41,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:45:41,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:45:41,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:45:41,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:45:41,653 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-11-09 15:45:41,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:45:41,687 INFO L93 Difference]: Finished difference Result 277 states and 699 transitions. [2020-11-09 15:45:41,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:45:41,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-09 15:45:41,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:45:41,690 INFO L225 Difference]: With dead ends: 277 [2020-11-09 15:45:41,690 INFO L226 Difference]: Without dead ends: 213 [2020-11-09 15:45:41,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 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 15:45:41,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-11-09 15:45:41,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-11-09 15:45:41,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-11-09 15:45:41,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 528 transitions. [2020-11-09 15:45:41,704 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 528 transitions. Word has length 10 [2020-11-09 15:45:41,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:45:41,704 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 528 transitions. [2020-11-09 15:45:41,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:45:41,705 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 528 transitions. [2020-11-09 15:45:41,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 15:45:41,706 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:45:41,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:45:41,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 15:45:41,707 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:45:41,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:45:41,708 INFO L82 PathProgramCache]: Analyzing trace with hash -346485744, now seen corresponding path program 1 times [2020-11-09 15:45:41,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:45:41,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095776006] [2020-11-09 15:45:41,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:45:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:45:41,859 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 15:45:41,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095776006] [2020-11-09 15:45:41,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:45:41,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 15:45:41,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [583347546] [2020-11-09 15:45:41,864 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:45:41,865 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:45:41,871 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-11-09 15:45:41,871 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:45:42,065 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3403#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 15:45:42,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 15:45:42,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:45:42,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 15:45:42,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 15:45:42,067 INFO L87 Difference]: Start difference. First operand 213 states and 528 transitions. Second operand 6 states. [2020-11-09 15:45:42,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:45:42,124 INFO L93 Difference]: Finished difference Result 173 states and 387 transitions. [2020-11-09 15:45:42,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 15:45:42,125 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-09 15:45:42,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:45:42,126 INFO L225 Difference]: With dead ends: 173 [2020-11-09 15:45:42,126 INFO L226 Difference]: Without dead ends: 136 [2020-11-09 15:45:42,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:45:42,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-09 15:45:42,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-11-09 15:45:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-09 15:45:42,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-11-09 15:45:42,134 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-11-09 15:45:42,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:45:42,134 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-11-09 15:45:42,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 15:45:42,135 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-11-09 15:45:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 15:45:42,136 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:45:42,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:45:42,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 15:45:42,137 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:45:42,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:45:42,137 INFO L82 PathProgramCache]: Analyzing trace with hash 685431305, now seen corresponding path program 1 times [2020-11-09 15:45:42,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:45:42,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686731146] [2020-11-09 15:45:42,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:45:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:45:42,216 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 15:45:42,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686731146] [2020-11-09 15:45:42,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:45:42,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 15:45:42,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1244118450] [2020-11-09 15:45:42,220 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:45:42,221 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:45:42,226 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 67 transitions. [2020-11-09 15:45:42,226 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:45:42,361 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3857#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 15:45:42,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 15:45:42,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:45:42,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 15:45:42,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:45:42,363 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 7 states. [2020-11-09 15:45:42,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:45:42,417 INFO L93 Difference]: Finished difference Result 119 states and 261 transitions. [2020-11-09 15:45:42,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:45:42,418 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-09 15:45:42,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:45:42,419 INFO L225 Difference]: With dead ends: 119 [2020-11-09 15:45:42,419 INFO L226 Difference]: Without dead ends: 109 [2020-11-09 15:45:42,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-09 15:45:42,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-09 15:45:42,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-09 15:45:42,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-09 15:45:42,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-11-09 15:45:42,427 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-11-09 15:45:42,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:45:42,427 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-11-09 15:45:42,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 15:45:42,428 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-11-09 15:45:42,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:45:42,429 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:45:42,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:45:42,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 15:45:42,430 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:45:42,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:45:42,430 INFO L82 PathProgramCache]: Analyzing trace with hash 461507696, now seen corresponding path program 1 times [2020-11-09 15:45:42,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:45:42,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360998] [2020-11-09 15:45:42,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:45:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:45:42,498 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 15:45:42,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360998] [2020-11-09 15:45:42,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:45:42,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:45:42,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1137055662] [2020-11-09 15:45:42,499 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:45:42,501 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:45:42,508 INFO L252 McrAutomatonBuilder]: Finished intersection with 47 states and 78 transitions. [2020-11-09 15:45:42,509 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:45:42,540 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:45:42,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:45:42,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:45:42,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:45:42,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:45:42,542 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-11-09 15:45:42,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:45:42,576 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-11-09 15:45:42,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:45:42,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-09 15:45:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:45:42,578 INFO L225 Difference]: With dead ends: 135 [2020-11-09 15:45:42,578 INFO L226 Difference]: Without dead ends: 55 [2020-11-09 15:45:42,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 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 15:45:42,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-09 15:45:42,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-09 15:45:42,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-09 15:45:42,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-11-09 15:45:42,582 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-11-09 15:45:42,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:45:42,582 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-11-09 15:45:42,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:45:42,583 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-11-09 15:45:42,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:45:42,583 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:45:42,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:45:42,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 15:45:42,584 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:45:42,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:45:42,585 INFO L82 PathProgramCache]: Analyzing trace with hash 356647694, now seen corresponding path program 2 times [2020-11-09 15:45:42,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:45:42,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100581640] [2020-11-09 15:45:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:45:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:45:42,718 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 15:45:42,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100581640] [2020-11-09 15:45:42,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:45:42,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 15:45:42,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1614218085] [2020-11-09 15:45:42,720 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:45:42,723 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:45:42,733 INFO L252 McrAutomatonBuilder]: Finished intersection with 60 states and 109 transitions. [2020-11-09 15:45:42,733 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:45:42,756 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:45:42,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:45:42,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:45:42,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:45:42,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:45:42,758 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-11-09 15:45:42,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:45:42,796 INFO L93 Difference]: Finished difference Result 69 states and 121 transitions. [2020-11-09 15:45:42,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:45:42,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 15:45:42,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:45:42,800 INFO L225 Difference]: With dead ends: 69 [2020-11-09 15:45:42,800 INFO L226 Difference]: Without dead ends: 31 [2020-11-09 15:45:42,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:45:42,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-09 15:45:42,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-09 15:45:42,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-09 15:45:42,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-11-09 15:45:42,802 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 18 [2020-11-09 15:45:42,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:45:42,803 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-11-09 15:45:42,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:45:42,803 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-11-09 15:45:42,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:45:42,803 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:45:42,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:45:42,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 15:45:42,804 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:45:42,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:45:42,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1017008488, now seen corresponding path program 3 times [2020-11-09 15:45:42,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:45:42,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286315791] [2020-11-09 15:45:42,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:45:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:45:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:45:42,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286315791] [2020-11-09 15:45:42,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:45:42,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 15:45:42,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [318706396] [2020-11-09 15:45:42,875 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:45:42,878 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:45:42,887 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 77 transitions. [2020-11-09 15:45:42,887 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:45:42,897 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:45:42,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:45:42,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:45:42,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:45:42,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:45:42,898 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand 5 states. [2020-11-09 15:45:42,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:45:42,925 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2020-11-09 15:45:42,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:45:42,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 15:45:42,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:45:42,926 INFO L225 Difference]: With dead ends: 30 [2020-11-09 15:45:42,926 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 15:45:42,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:45:42,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 15:45:42,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 15:45:42,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 15:45:42,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 15:45:42,927 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-09 15:45:42,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:45:42,928 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 15:45:42,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:45:42,928 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 15:45:42,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 15:45:42,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 15:45:42,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:45:42 BasicIcfg [2020-11-09 15:45:42,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 15:45:42,934 INFO L168 Benchmark]: Toolchain (without parser) took 7575.68 ms. Allocated memory was 162.5 MB in the beginning and 234.9 MB in the end (delta: 72.4 MB). Free memory was 135.7 MB in the beginning and 164.7 MB in the end (delta: -29.0 MB). Peak memory consumption was 44.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:45:42,934 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 125.8 MB. Free memory is still 96.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:45:42,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 934.77 ms. Allocated memory is still 162.5 MB. Free memory was 135.2 MB in the beginning and 143.4 MB in the end (delta: -8.2 MB). Peak memory consumption was 35.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:45:42,936 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.50 ms. Allocated memory is still 162.5 MB. Free memory was 142.9 MB in the beginning and 141.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:45:42,937 INFO L168 Benchmark]: Boogie Preprocessor took 30.25 ms. Allocated memory is still 162.5 MB. Free memory was 141.3 MB in the beginning and 139.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:45:42,937 INFO L168 Benchmark]: RCFGBuilder took 497.20 ms. Allocated memory is still 162.5 MB. Free memory was 139.7 MB in the beginning and 117.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:45:42,938 INFO L168 Benchmark]: TraceAbstraction took 6047.40 ms. Allocated memory was 162.5 MB in the beginning and 234.9 MB in the end (delta: 72.4 MB). Free memory was 117.7 MB in the beginning and 164.7 MB in the end (delta: -47.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 8.0 GB. [2020-11-09 15:45:42,942 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 125.8 MB. Free memory is still 96.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 934.77 ms. Allocated memory is still 162.5 MB. Free memory was 135.2 MB in the beginning and 143.4 MB in the end (delta: -8.2 MB). Peak memory consumption was 35.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 52.50 ms. Allocated memory is still 162.5 MB. Free memory was 142.9 MB in the beginning and 141.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.25 ms. Allocated memory is still 162.5 MB. Free memory was 141.3 MB in the beginning and 139.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 497.20 ms. Allocated memory is still 162.5 MB. Free memory was 139.7 MB in the beginning and 117.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6047.40 ms. Allocated memory was 162.5 MB in the beginning and 234.9 MB in the end (delta: 72.4 MB). Free memory was 117.7 MB in the beginning and 164.7 MB in the end (delta: -47.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 751 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 55 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2658 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: 5.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 172 SDtfs, 128 SDslu, 307 SDs, 0 SdLazy, 112 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 3540 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...