/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:14:02,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:14:02,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:14:02,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:14:02,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:14:02,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:14:02,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:14:02,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:14:02,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:14:02,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:14:02,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:14:02,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:14:02,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:14:02,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:14:02,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:14:02,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:14:02,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:14:02,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:14:02,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:14:02,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:14:02,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:14:02,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:14:02,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:14:02,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:14:02,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:14:02,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:14:02,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:14:02,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:14:02,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:14:02,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:14:02,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:14:02,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:14:02,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:14:02,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:14:02,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:14:02,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:14:02,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:14:02,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:14:02,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:14:02,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:14:02,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:14:02,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:14:02,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:14:02,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:14:02,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:14:02,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:14:02,804 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:14:02,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:14:02,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:14:02,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:14:02,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:14:02,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:14:02,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:14:02,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:14:02,805 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:14:02,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:14:02,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:14:02,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:14:02,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:14:02,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:14:02,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:14:02,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:14:02,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:14:02,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:14:02,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:14:02,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:14:02,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:14:02,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:14:03,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:14:03,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:14:03,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:14:03,255 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:14:03,256 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:14:03,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i [2020-12-22 11:14:03,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a802d86/e8b40d264a794aec914a6505adb62514/FLAGd6af5fe8d [2020-12-22 11:14:04,051 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:14:04,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i [2020-12-22 11:14:04,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a802d86/e8b40d264a794aec914a6505adb62514/FLAGd6af5fe8d [2020-12-22 11:14:04,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a802d86/e8b40d264a794aec914a6505adb62514 [2020-12-22 11:14:04,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:14:04,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:14:04,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:14:04,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:14:04,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:14:04,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:14:04" (1/1) ... [2020-12-22 11:14:04,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@93435bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:04, skipping insertion in model container [2020-12-22 11:14:04,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:14:04" (1/1) ... [2020-12-22 11:14:04,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:14:04,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:14:04,750 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i[950,963] [2020-12-22 11:14:04,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:14:04,923 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:14:04,937 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i[950,963] [2020-12-22 11:14:04,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:14:05,104 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:14:05,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:05 WrapperNode [2020-12-22 11:14:05,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:14:05,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:14:05,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:14:05,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:14:05,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:05" (1/1) ... [2020-12-22 11:14:05,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:05" (1/1) ... [2020-12-22 11:14:05,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:14:05,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:14:05,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:14:05,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:14:05,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:05" (1/1) ... [2020-12-22 11:14:05,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:05" (1/1) ... [2020-12-22 11:14:05,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:05" (1/1) ... [2020-12-22 11:14:05,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:05" (1/1) ... [2020-12-22 11:14:05,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:05" (1/1) ... [2020-12-22 11:14:05,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:05" (1/1) ... [2020-12-22 11:14:05,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:05" (1/1) ... [2020-12-22 11:14:05,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:14:05,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:14:05,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:14:05,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:14:05,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:05" (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 [2020-12-22 11:14:05,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:14:05,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:14:05,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:14:05,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:14:05,405 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:14:05,405 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:14:05,406 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:14:05,406 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:14:05,406 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-22 11:14:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-22 11:14:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:14:05,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:14:05,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:14:05,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:14:05,412 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-22 11:14:05,861 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:14:05,861 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:14:05,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:14:05 BoogieIcfgContainer [2020-12-22 11:14:05,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:14:05,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:14:05,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:14:05,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:14:05,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:14:04" (1/3) ... [2020-12-22 11:14:05,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26eebfb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:14:05, skipping insertion in model container [2020-12-22 11:14:05,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:05" (2/3) ... [2020-12-22 11:14:05,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26eebfb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:14:05, skipping insertion in model container [2020-12-22 11:14:05,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:14:05" (3/3) ... [2020-12-22 11:14:05,888 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.oepc.i [2020-12-22 11:14:05,903 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:14:05,903 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:14:05,909 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:14:05,910 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:14:06,004 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,004 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,005 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,007 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,008 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,008 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,008 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,008 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,009 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,009 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,010 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,010 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,011 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,011 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,011 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,011 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,012 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,012 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,012 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,012 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,013 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,013 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,014 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,014 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,017 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,017 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,017 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,019 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,020 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,020 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,020 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,021 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,021 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,022 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,022 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,025 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,026 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,026 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,027 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,037 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,037 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,037 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,038 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,046 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,047 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,047 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,047 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:06,053 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:14:06,077 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 11:14:06,118 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:14:06,118 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:14:06,118 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:14:06,118 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:14:06,119 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:14:06,119 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:14:06,119 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:14:06,119 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:14:06,138 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:14:06,141 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-22 11:14:06,145 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-22 11:14:06,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-22 11:14:06,240 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-22 11:14:06,240 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:14:06,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-22 11:14:06,255 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-22 11:14:08,909 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-22 11:14:09,025 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-22 11:14:09,260 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-22 11:14:09,370 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-22 11:14:09,427 INFO L131 LiptonReduction]: Checked pairs total: 2576 [2020-12-22 11:14:09,427 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-22 11:14:09,434 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-22 11:14:09,463 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-22 11:14:09,465 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-22 11:14:09,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 11:14:09,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:14:09,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:14:09,473 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:14:09,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:14:09,480 INFO L82 PathProgramCache]: Analyzing trace with hash 694239397, now seen corresponding path program 1 times [2020-12-22 11:14:09,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:14:09,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228281890] [2020-12-22 11:14:09,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:14:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:14:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:14:09,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228281890] [2020-12-22 11:14:09,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:14:09,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:14:09,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218881735] [2020-12-22 11:14:09,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:14:09,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:14:09,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:14:09,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:14:09,702 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-22 11:14:09,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:14:09,747 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-22 11:14:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:14:09,748 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 11:14:09,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:14:09,766 INFO L225 Difference]: With dead ends: 362 [2020-12-22 11:14:09,766 INFO L226 Difference]: Without dead ends: 298 [2020-12-22 11:14:09,767 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 [2020-12-22 11:14:09,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-22 11:14:09,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-22 11:14:09,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-22 11:14:09,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-22 11:14:09,852 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-22 11:14:09,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:14:09,854 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-22 11:14:09,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:14:09,854 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-22 11:14:09,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 11:14:09,855 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:14:09,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:14:09,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:14:09,856 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:14:09,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:14:09,857 INFO L82 PathProgramCache]: Analyzing trace with hash 46562236, now seen corresponding path program 1 times [2020-12-22 11:14:09,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:14:09,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111711366] [2020-12-22 11:14:09,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:14:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:14:10,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:14:10,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111711366] [2020-12-22 11:14:10,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:14:10,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:14:10,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56867432] [2020-12-22 11:14:10,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:14:10,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:14:10,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:14:10,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:14:10,046 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-22 11:14:10,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:14:10,111 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-12-22 11:14:10,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:14:10,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 11:14:10,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:14:10,119 INFO L225 Difference]: With dead ends: 346 [2020-12-22 11:14:10,121 INFO L226 Difference]: Without dead ends: 282 [2020-12-22 11:14:10,122 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 [2020-12-22 11:14:10,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-12-22 11:14:10,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-12-22 11:14:10,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-12-22 11:14:10,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-12-22 11:14:10,181 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-12-22 11:14:10,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:14:10,184 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-12-22 11:14:10,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:14:10,184 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-12-22 11:14:10,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:14:10,187 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:14:10,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:14:10,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:14:10,188 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:14:10,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:14:10,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1443401920, now seen corresponding path program 1 times [2020-12-22 11:14:10,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:14:10,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58397162] [2020-12-22 11:14:10,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:14:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:14:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:14:10,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58397162] [2020-12-22 11:14:10,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:14:10,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:14:10,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957742679] [2020-12-22 11:14:10,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:14:10,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:14:10,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:14:10,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:14:10,339 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-12-22 11:14:10,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:14:10,389 INFO L93 Difference]: Finished difference Result 277 states and 699 transitions. [2020-12-22 11:14:10,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:14:10,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 11:14:10,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:14:10,394 INFO L225 Difference]: With dead ends: 277 [2020-12-22 11:14:10,394 INFO L226 Difference]: Without dead ends: 213 [2020-12-22 11:14:10,395 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 [2020-12-22 11:14:10,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-12-22 11:14:10,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-12-22 11:14:10,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-12-22 11:14:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 528 transitions. [2020-12-22 11:14:10,422 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 528 transitions. Word has length 10 [2020-12-22 11:14:10,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:14:10,423 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 528 transitions. [2020-12-22 11:14:10,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:14:10,423 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 528 transitions. [2020-12-22 11:14:10,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:14:10,441 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:14:10,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:14:10,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:14:10,442 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:14:10,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:14:10,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1084426668, now seen corresponding path program 1 times [2020-12-22 11:14:10,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:14:10,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598097148] [2020-12-22 11:14:10,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:14:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:14:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:14:10,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598097148] [2020-12-22 11:14:10,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:14:10,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:14:10,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014306205] [2020-12-22 11:14:10,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:14:10,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:14:10,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:14:10,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:14:10,581 INFO L87 Difference]: Start difference. First operand 213 states and 528 transitions. Second operand 4 states. [2020-12-22 11:14:10,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:14:10,631 INFO L93 Difference]: Finished difference Result 323 states and 755 transitions. [2020-12-22 11:14:10,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:14:10,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 11:14:10,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:14:10,636 INFO L225 Difference]: With dead ends: 323 [2020-12-22 11:14:10,636 INFO L226 Difference]: Without dead ends: 267 [2020-12-22 11:14:10,637 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 [2020-12-22 11:14:10,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-12-22 11:14:10,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 243. [2020-12-22 11:14:10,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-12-22 11:14:10,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 589 transitions. [2020-12-22 11:14:10,650 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 589 transitions. Word has length 12 [2020-12-22 11:14:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:14:10,650 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 589 transitions. [2020-12-22 11:14:10,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:14:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 589 transitions. [2020-12-22 11:14:10,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:14:10,658 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:14:10,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:14:10,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:14:10,660 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:14:10,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:14:10,665 INFO L82 PathProgramCache]: Analyzing trace with hash -465965508, now seen corresponding path program 1 times [2020-12-22 11:14:10,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:14:10,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686205892] [2020-12-22 11:14:10,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:14:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:14:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:14:10,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686205892] [2020-12-22 11:14:10,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:14:10,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:14:10,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242020931] [2020-12-22 11:14:10,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:14:10,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:14:10,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:14:10,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:14:10,762 INFO L87 Difference]: Start difference. First operand 243 states and 589 transitions. Second operand 5 states. [2020-12-22 11:14:10,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:14:10,817 INFO L93 Difference]: Finished difference Result 211 states and 463 transitions. [2020-12-22 11:14:10,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:14:10,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-22 11:14:10,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:14:10,820 INFO L225 Difference]: With dead ends: 211 [2020-12-22 11:14:10,820 INFO L226 Difference]: Without dead ends: 160 [2020-12-22 11:14:10,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:14:10,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-12-22 11:14:10,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2020-12-22 11:14:10,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-12-22 11:14:10,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 332 transitions. [2020-12-22 11:14:10,828 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 332 transitions. Word has length 12 [2020-12-22 11:14:10,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:14:10,828 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 332 transitions. [2020-12-22 11:14:10,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:14:10,828 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 332 transitions. [2020-12-22 11:14:10,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 11:14:10,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:14:10,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:14:10,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:14:10,830 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:14:10,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:14:10,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1982160192, now seen corresponding path program 1 times [2020-12-22 11:14:10,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:14:10,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988911079] [2020-12-22 11:14:10,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:14:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:14:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:14:10,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988911079] [2020-12-22 11:14:10,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:14:10,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:14:10,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216533234] [2020-12-22 11:14:10,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:14:10,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:14:10,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:14:10,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:14:10,916 INFO L87 Difference]: Start difference. First operand 156 states and 332 transitions. Second operand 6 states. [2020-12-22 11:14:10,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:14:10,975 INFO L93 Difference]: Finished difference Result 139 states and 296 transitions. [2020-12-22 11:14:10,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:14:10,976 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 11:14:10,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:14:10,977 INFO L225 Difference]: With dead ends: 139 [2020-12-22 11:14:10,977 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 11:14:10,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:14:10,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 11:14:10,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2020-12-22 11:14:10,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-22 11:14:10,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 195 transitions. [2020-12-22 11:14:10,982 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 195 transitions. Word has length 15 [2020-12-22 11:14:10,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:14:10,982 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 195 transitions. [2020-12-22 11:14:10,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:14:10,982 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 195 transitions. [2020-12-22 11:14:10,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 11:14:10,983 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:14:10,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:14:10,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:14:10,983 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:14:10,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:14:10,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1206418128, now seen corresponding path program 1 times [2020-12-22 11:14:10,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:14:10,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868127796] [2020-12-22 11:14:10,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:14:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:14:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:14:11,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868127796] [2020-12-22 11:14:11,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:14:11,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:14:11,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136472188] [2020-12-22 11:14:11,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:14:11,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:14:11,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:14:11,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:14:11,051 INFO L87 Difference]: Start difference. First operand 93 states and 195 transitions. Second operand 5 states. [2020-12-22 11:14:11,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:14:11,089 INFO L93 Difference]: Finished difference Result 115 states and 233 transitions. [2020-12-22 11:14:11,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:14:11,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 11:14:11,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:14:11,092 INFO L225 Difference]: With dead ends: 115 [2020-12-22 11:14:11,092 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 11:14:11,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:14:11,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 11:14:11,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-22 11:14:11,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 11:14:11,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 97 transitions. [2020-12-22 11:14:11,096 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 97 transitions. Word has length 18 [2020-12-22 11:14:11,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:14:11,096 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 97 transitions. [2020-12-22 11:14:11,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:14:11,096 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 97 transitions. [2020-12-22 11:14:11,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 11:14:11,097 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:14:11,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:14:11,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:14:11,097 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:14:11,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:14:11,098 INFO L82 PathProgramCache]: Analyzing trace with hash 785508606, now seen corresponding path program 2 times [2020-12-22 11:14:11,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:14:11,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943084094] [2020-12-22 11:14:11,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:14:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:14:11,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:14:11,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943084094] [2020-12-22 11:14:11,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:14:11,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:14:11,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529016037] [2020-12-22 11:14:11,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:14:11,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:14:11,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:14:11,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:14:11,171 INFO L87 Difference]: Start difference. First operand 53 states and 97 transitions. Second operand 5 states. [2020-12-22 11:14:11,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:14:11,199 INFO L93 Difference]: Finished difference Result 67 states and 119 transitions. [2020-12-22 11:14:11,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:14:11,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 11:14:11,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:14:11,205 INFO L225 Difference]: With dead ends: 67 [2020-12-22 11:14:11,205 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 11:14:11,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:14:11,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 11:14:11,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 11:14:11,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 11:14:11,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-12-22 11:14:11,208 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 18 [2020-12-22 11:14:11,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:14:11,208 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-12-22 11:14:11,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:14:11,208 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-12-22 11:14:11,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 11:14:11,209 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:14:11,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:14:11,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:14:11,209 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:14:11,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:14:11,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1230604400, now seen corresponding path program 3 times [2020-12-22 11:14:11,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:14:11,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498047792] [2020-12-22 11:14:11,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:14:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:14:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:14:11,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498047792] [2020-12-22 11:14:11,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:14:11,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:14:11,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091876585] [2020-12-22 11:14:11,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:14:11,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:14:11,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:14:11,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:14:11,272 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-12-22 11:14:11,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:14:11,301 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-12-22 11:14:11,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:14:11,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 11:14:11,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:14:11,302 INFO L225 Difference]: With dead ends: 36 [2020-12-22 11:14:11,302 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:14:11,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:14:11,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:14:11,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:14:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:14:11,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:14:11,303 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-22 11:14:11,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:14:11,304 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:14:11,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:14:11,304 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:14:11,304 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:14:11,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:14:11,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:14:11 BasicIcfg [2020-12-22 11:14:11,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:14:11,313 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:14:11,314 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:14:11,314 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:14:11,314 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:14:05" (3/4) ... [2020-12-22 11:14:11,319 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:14:11,327 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:14:11,327 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:14:11,327 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-22 11:14:11,335 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-22 11:14:11,335 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:14:11,335 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:14:11,335 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:14:11,405 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe034_tso.oepc.i-witness.graphml [2020-12-22 11:14:11,405 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:14:11,406 INFO L168 Benchmark]: Toolchain (without parser) took 7037.47 ms. Allocated memory was 153.1 MB in the beginning and 188.7 MB in the end (delta: 35.7 MB). Free memory was 125.8 MB in the beginning and 69.0 MB in the end (delta: 56.8 MB). Peak memory consumption was 93.5 MB. Max. memory is 8.0 GB. [2020-12-22 11:14:11,407 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory is still 107.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:14:11,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.86 ms. Allocated memory is still 153.1 MB. Free memory was 125.5 MB in the beginning and 94.7 MB in the end (delta: 30.8 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-12-22 11:14:11,410 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.48 ms. Allocated memory is still 153.1 MB. Free memory was 94.7 MB in the beginning and 92.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:14:11,411 INFO L168 Benchmark]: Boogie Preprocessor took 61.77 ms. Allocated memory is still 153.1 MB. Free memory was 92.6 MB in the beginning and 91.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:14:11,411 INFO L168 Benchmark]: RCFGBuilder took 593.11 ms. Allocated memory is still 153.1 MB. Free memory was 91.2 MB in the beginning and 69.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:14:11,417 INFO L168 Benchmark]: TraceAbstraction took 5444.11 ms. Allocated memory was 153.1 MB in the beginning and 188.7 MB in the end (delta: 35.7 MB). Free memory was 68.8 MB in the beginning and 71.6 MB in the end (delta: -2.7 MB). Peak memory consumption was 33.8 MB. Max. memory is 8.0 GB. [2020-12-22 11:14:11,417 INFO L168 Benchmark]: Witness Printer took 91.56 ms. Allocated memory is still 188.7 MB. Free memory was 71.6 MB in the beginning and 69.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:14:11,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory is still 107.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 733.86 ms. Allocated memory is still 153.1 MB. Free memory was 125.5 MB in the beginning and 94.7 MB in the end (delta: 30.8 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 97.48 ms. Allocated memory is still 153.1 MB. Free memory was 94.7 MB in the beginning and 92.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.77 ms. Allocated memory is still 153.1 MB. Free memory was 92.6 MB in the beginning and 91.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 593.11 ms. Allocated memory is still 153.1 MB. Free memory was 91.2 MB in the beginning and 69.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5444.11 ms. Allocated memory was 153.1 MB in the beginning and 188.7 MB in the end (delta: 35.7 MB). Free memory was 68.8 MB in the beginning and 71.6 MB in the end (delta: -2.7 MB). Peak memory consumption was 33.8 MB. Max. memory is 8.0 GB. * Witness Printer took 91.56 ms. Allocated memory is still 188.7 MB. Free memory was 71.6 MB in the beginning and 69.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 835 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2576 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 200 SDtfs, 167 SDslu, 330 SDs, 0 SdLazy, 126 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 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, 9 MinimizatonAttempts, 44 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 5031 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...