/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/safe009_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:39:54,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:39:54,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:39:54,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:39:54,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:39:54,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:39:54,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:39:54,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:39:54,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:39:54,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:39:54,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:39:54,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:39:54,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:39:54,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:39:54,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:39:54,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:39:54,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:39:54,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:39:54,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:39:54,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:39:54,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:39:54,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:39:54,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:39:54,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:39:54,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 13:39:54,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 13:39:54,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 13:39:54,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 13:39:54,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 13:39:54,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 13:39:54,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:39:54,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:39:54,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:39:54,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:39:54,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:39:54,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:39:54,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:39:54,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:39:54,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:39:54,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:39:54,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:39:54,110 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 13:39:54,138 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:39:54,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:39:54,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:39:54,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:39:54,141 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:39:54,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:39:54,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:39:54,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:39:54,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:39:54,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:39:54,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:39:54,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:39:54,143 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:39:54,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:39:54,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:39:54,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:39:54,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:39:54,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:39:54,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:39:54,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:39:54,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:39:54,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:39:54,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:39:54,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:39:54,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:39:54,146 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:39:54,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:39:54,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:39:54,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:39:54,615 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:39:54,621 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:39:54,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe009_tso.opt.i [2020-12-23 13:39:54,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/bea144564/ec92458c320547cebdafd4ee3f0026d8/FLAGcd1099328 [2020-12-23 13:39:55,445 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:39:55,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_tso.opt.i [2020-12-23 13:39:55,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/bea144564/ec92458c320547cebdafd4ee3f0026d8/FLAGcd1099328 [2020-12-23 13:39:55,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/bea144564/ec92458c320547cebdafd4ee3f0026d8 [2020-12-23 13:39:55,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:39:55,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:39:55,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:39:55,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:39:55,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:39:55,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:39:55" (1/1) ... [2020-12-23 13:39:55,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40acae4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:55, skipping insertion in model container [2020-12-23 13:39:55,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:39:55" (1/1) ... [2020-12-23 13:39:55,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:39:55,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:39:56,021 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:39:56,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:39:56,353 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:39:56,371 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:39:56,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:39:56,617 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:39:56,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:56 WrapperNode [2020-12-23 13:39:56,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:39:56,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:39:56,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:39:56,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:39:56,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:56" (1/1) ... [2020-12-23 13:39:56,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:56" (1/1) ... [2020-12-23 13:39:56,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:39:56,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:39:56,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:39:56,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:39:56,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:56" (1/1) ... [2020-12-23 13:39:56,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:56" (1/1) ... [2020-12-23 13:39:56,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:56" (1/1) ... [2020-12-23 13:39:56,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:56" (1/1) ... [2020-12-23 13:39:56,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:56" (1/1) ... [2020-12-23 13:39:56,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:56" (1/1) ... [2020-12-23 13:39:56,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:56" (1/1) ... [2020-12-23 13:39:56,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:39:56,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:39:56,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:39:56,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:39:56,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:39:56,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:39:56,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:39:56,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:39:56,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:39:56,850 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:39:56,850 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:39:56,851 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:39:56,851 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:39:56,852 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:39:56,853 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:39:56,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:39:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:39:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:39:56,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:39:56,858 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-23 13:39:57,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:39:57,326 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:39:57,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:39:57 BoogieIcfgContainer [2020-12-23 13:39:57,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:39:57,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:39:57,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:39:57,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:39:57,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:39:55" (1/3) ... [2020-12-23 13:39:57,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f73bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:39:57, skipping insertion in model container [2020-12-23 13:39:57,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:56" (2/3) ... [2020-12-23 13:39:57,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f73bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:39:57, skipping insertion in model container [2020-12-23 13:39:57,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:39:57" (3/3) ... [2020-12-23 13:39:57,339 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.opt.i [2020-12-23 13:39:57,347 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:39:57,350 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:39:57,356 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:39:57,357 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:39:57,391 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,391 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,391 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,392 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,392 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,392 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,392 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,392 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,393 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,393 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,393 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,394 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,394 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,394 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,395 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,395 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,395 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,395 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,395 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,396 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,396 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,396 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,396 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,397 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,397 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,397 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,398 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,398 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,398 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,398 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,398 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,398 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,399 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,399 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,399 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,400 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,402 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,403 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,403 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,403 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,408 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,408 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,409 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,409 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,411 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,411 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,411 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,412 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:57,413 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:39:57,435 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-23 13:39:57,458 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:39:57,458 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:39:57,459 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:39:57,459 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:39:57,459 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:39:57,459 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:39:57,459 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:39:57,459 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:39:57,474 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:39:57,477 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-23 13:39:57,480 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-23 13:39:57,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2020-12-23 13:39:57,535 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2020-12-23 13:39:57,536 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:39:57,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-12-23 13:39:57,543 INFO L116 LiptonReduction]: Number of co-enabled transitions 1220 [2020-12-23 13:40:00,274 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 13:40:00,607 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 13:40:00,789 INFO L131 LiptonReduction]: Checked pairs total: 2044 [2020-12-23 13:40:00,790 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-23 13:40:00,798 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-12-23 13:40:00,826 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 282 states. [2020-12-23 13:40:00,828 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2020-12-23 13:40:00,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:40:00,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:00,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:00,838 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:00,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:00,846 INFO L82 PathProgramCache]: Analyzing trace with hash 622846231, now seen corresponding path program 1 times [2020-12-23 13:40:00,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:00,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651763874] [2020-12-23 13:40:00,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:40:01,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651763874] [2020-12-23 13:40:01,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:01,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:40:01,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925253741] [2020-12-23 13:40:01,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 13:40:01,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:01,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 13:40:01,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:40:01,079 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 2 states. [2020-12-23 13:40:01,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:01,130 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-12-23 13:40:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 13:40:01,132 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 13:40:01,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:01,153 INFO L225 Difference]: With dead ends: 282 [2020-12-23 13:40:01,153 INFO L226 Difference]: Without dead ends: 234 [2020-12-23 13:40:01,155 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 [2020-12-23 13:40:01,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-12-23 13:40:01,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-12-23 13:40:01,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-12-23 13:40:01,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 656 transitions. [2020-12-23 13:40:01,225 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 656 transitions. Word has length 8 [2020-12-23 13:40:01,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:01,227 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 656 transitions. [2020-12-23 13:40:01,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 13:40:01,227 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 656 transitions. [2020-12-23 13:40:01,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:40:01,229 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:01,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:01,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:40:01,229 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:01,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:01,230 INFO L82 PathProgramCache]: Analyzing trace with hash 2128318799, now seen corresponding path program 1 times [2020-12-23 13:40:01,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:01,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272659768] [2020-12-23 13:40:01,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:40:01,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272659768] [2020-12-23 13:40:01,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:01,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:40:01,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817945568] [2020-12-23 13:40:01,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:40:01,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:01,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:40:01,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:40:01,425 INFO L87 Difference]: Start difference. First operand 234 states and 656 transitions. Second operand 4 states. [2020-12-23 13:40:01,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:01,494 INFO L93 Difference]: Finished difference Result 402 states and 1050 transitions. [2020-12-23 13:40:01,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:40:01,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 13:40:01,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:01,506 INFO L225 Difference]: With dead ends: 402 [2020-12-23 13:40:01,506 INFO L226 Difference]: Without dead ends: 308 [2020-12-23 13:40:01,507 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 [2020-12-23 13:40:01,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-12-23 13:40:01,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 264. [2020-12-23 13:40:01,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-12-23 13:40:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 712 transitions. [2020-12-23 13:40:01,562 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 712 transitions. Word has length 9 [2020-12-23 13:40:01,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:01,562 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 712 transitions. [2020-12-23 13:40:01,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:40:01,563 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 712 transitions. [2020-12-23 13:40:01,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:40:01,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:01,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:01,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:40:01,565 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:01,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:01,566 INFO L82 PathProgramCache]: Analyzing trace with hash 503221834, now seen corresponding path program 1 times [2020-12-23 13:40:01,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:01,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535801893] [2020-12-23 13:40:01,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:40:01,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535801893] [2020-12-23 13:40:01,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:01,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:40:01,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647000271] [2020-12-23 13:40:01,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:40:01,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:01,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:40:01,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:40:01,679 INFO L87 Difference]: Start difference. First operand 264 states and 712 transitions. Second operand 5 states. [2020-12-23 13:40:01,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:01,750 INFO L93 Difference]: Finished difference Result 345 states and 864 transitions. [2020-12-23 13:40:01,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:40:01,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:40:01,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:01,754 INFO L225 Difference]: With dead ends: 345 [2020-12-23 13:40:01,755 INFO L226 Difference]: Without dead ends: 278 [2020-12-23 13:40:01,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:40:01,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-12-23 13:40:01,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 246. [2020-12-23 13:40:01,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-12-23 13:40:01,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 648 transitions. [2020-12-23 13:40:01,792 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 648 transitions. Word has length 10 [2020-12-23 13:40:01,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:01,793 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 648 transitions. [2020-12-23 13:40:01,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:40:01,793 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 648 transitions. [2020-12-23 13:40:01,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:40:01,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:01,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:01,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:40:01,801 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:01,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:01,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1553300282, now seen corresponding path program 1 times [2020-12-23 13:40:01,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:01,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39912933] [2020-12-23 13:40:01,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:40:01,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39912933] [2020-12-23 13:40:01,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:01,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:40:01,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927376018] [2020-12-23 13:40:01,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:40:01,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:01,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:40:01,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:40:01,936 INFO L87 Difference]: Start difference. First operand 246 states and 648 transitions. Second operand 5 states. [2020-12-23 13:40:01,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:01,989 INFO L93 Difference]: Finished difference Result 298 states and 740 transitions. [2020-12-23 13:40:01,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:40:01,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:40:01,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:01,992 INFO L225 Difference]: With dead ends: 298 [2020-12-23 13:40:01,992 INFO L226 Difference]: Without dead ends: 254 [2020-12-23 13:40:01,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:40:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-12-23 13:40:02,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 222. [2020-12-23 13:40:02,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-23 13:40:02,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 576 transitions. [2020-12-23 13:40:02,005 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 576 transitions. Word has length 10 [2020-12-23 13:40:02,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:02,005 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 576 transitions. [2020-12-23 13:40:02,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:40:02,005 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 576 transitions. [2020-12-23 13:40:02,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:40:02,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:02,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:02,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:40:02,008 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:02,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:02,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1580065377, now seen corresponding path program 1 times [2020-12-23 13:40:02,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:02,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068514300] [2020-12-23 13:40:02,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:02,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:40:02,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068514300] [2020-12-23 13:40:02,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:02,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:40:02,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236512087] [2020-12-23 13:40:02,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:40:02,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:02,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:40:02,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:40:02,107 INFO L87 Difference]: Start difference. First operand 222 states and 576 transitions. Second operand 5 states. [2020-12-23 13:40:02,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:02,177 INFO L93 Difference]: Finished difference Result 266 states and 662 transitions. [2020-12-23 13:40:02,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:40:02,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 13:40:02,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:02,180 INFO L225 Difference]: With dead ends: 266 [2020-12-23 13:40:02,180 INFO L226 Difference]: Without dead ends: 242 [2020-12-23 13:40:02,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:40:02,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-12-23 13:40:02,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 210. [2020-12-23 13:40:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-12-23 13:40:02,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 538 transitions. [2020-12-23 13:40:02,191 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 538 transitions. Word has length 11 [2020-12-23 13:40:02,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:02,192 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 538 transitions. [2020-12-23 13:40:02,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:40:02,192 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 538 transitions. [2020-12-23 13:40:02,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:40:02,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:02,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:02,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:40:02,194 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:02,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:02,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1430850506, now seen corresponding path program 1 times [2020-12-23 13:40:02,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:02,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515158870] [2020-12-23 13:40:02,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:40:02,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515158870] [2020-12-23 13:40:02,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:02,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:40:02,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434060467] [2020-12-23 13:40:02,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:40:02,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:02,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:40:02,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:40:02,271 INFO L87 Difference]: Start difference. First operand 210 states and 538 transitions. Second operand 6 states. [2020-12-23 13:40:02,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:02,318 INFO L93 Difference]: Finished difference Result 300 states and 745 transitions. [2020-12-23 13:40:02,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:40:02,319 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-23 13:40:02,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:02,321 INFO L225 Difference]: With dead ends: 300 [2020-12-23 13:40:02,321 INFO L226 Difference]: Without dead ends: 180 [2020-12-23 13:40:02,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:40:02,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-23 13:40:02,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 156. [2020-12-23 13:40:02,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-12-23 13:40:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 390 transitions. [2020-12-23 13:40:02,329 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 390 transitions. Word has length 12 [2020-12-23 13:40:02,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:02,329 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 390 transitions. [2020-12-23 13:40:02,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:40:02,330 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 390 transitions. [2020-12-23 13:40:02,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:40:02,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:02,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:02,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:40:02,331 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:02,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:02,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1400741867, now seen corresponding path program 1 times [2020-12-23 13:40:02,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:02,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575003748] [2020-12-23 13:40:02,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:40:02,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575003748] [2020-12-23 13:40:02,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:02,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:40:02,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855486142] [2020-12-23 13:40:02,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:40:02,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:02,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:40:02,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:40:02,379 INFO L87 Difference]: Start difference. First operand 156 states and 390 transitions. Second operand 5 states. [2020-12-23 13:40:02,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:02,426 INFO L93 Difference]: Finished difference Result 254 states and 611 transitions. [2020-12-23 13:40:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:40:02,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:40:02,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:02,428 INFO L225 Difference]: With dead ends: 254 [2020-12-23 13:40:02,429 INFO L226 Difference]: Without dead ends: 144 [2020-12-23 13:40:02,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:40:02,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-23 13:40:02,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 120. [2020-12-23 13:40:02,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-23 13:40:02,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 282 transitions. [2020-12-23 13:40:02,436 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 282 transitions. Word has length 12 [2020-12-23 13:40:02,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:02,436 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 282 transitions. [2020-12-23 13:40:02,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:40:02,436 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 282 transitions. [2020-12-23 13:40:02,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:40:02,437 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:02,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:02,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:40:02,438 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:02,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:02,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1013965314, now seen corresponding path program 2 times [2020-12-23 13:40:02,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:02,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309393261] [2020-12-23 13:40:02,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:40:02,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309393261] [2020-12-23 13:40:02,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:02,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:40:02,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214843400] [2020-12-23 13:40:02,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:40:02,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:02,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:40:02,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:40:02,499 INFO L87 Difference]: Start difference. First operand 120 states and 282 transitions. Second operand 5 states. [2020-12-23 13:40:02,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:02,547 INFO L93 Difference]: Finished difference Result 134 states and 299 transitions. [2020-12-23 13:40:02,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:40:02,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:40:02,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:02,555 INFO L225 Difference]: With dead ends: 134 [2020-12-23 13:40:02,555 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 13:40:02,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:40:02,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 13:40:02,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-23 13:40:02,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 13:40:02,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 113 transitions. [2020-12-23 13:40:02,561 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 113 transitions. Word has length 12 [2020-12-23 13:40:02,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:02,561 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 113 transitions. [2020-12-23 13:40:02,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:40:02,562 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 113 transitions. [2020-12-23 13:40:02,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:40:02,562 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:02,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:02,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:40:02,562 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:02,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:02,563 INFO L82 PathProgramCache]: Analyzing trace with hash 776645246, now seen corresponding path program 1 times [2020-12-23 13:40:02,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:02,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028569155] [2020-12-23 13:40:02,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:02,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:40:02,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028569155] [2020-12-23 13:40:02,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:02,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:40:02,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343529725] [2020-12-23 13:40:02,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:40:02,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:02,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:40:02,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:40:02,619 INFO L87 Difference]: Start difference. First operand 56 states and 113 transitions. Second operand 4 states. [2020-12-23 13:40:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:02,640 INFO L93 Difference]: Finished difference Result 58 states and 102 transitions. [2020-12-23 13:40:02,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:40:02,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 13:40:02,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:02,641 INFO L225 Difference]: With dead ends: 58 [2020-12-23 13:40:02,641 INFO L226 Difference]: Without dead ends: 45 [2020-12-23 13:40:02,642 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 [2020-12-23 13:40:02,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-23 13:40:02,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-23 13:40:02,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 13:40:02,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 78 transitions. [2020-12-23 13:40:02,644 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 78 transitions. Word has length 13 [2020-12-23 13:40:02,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:02,645 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 78 transitions. [2020-12-23 13:40:02,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:40:02,645 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 78 transitions. [2020-12-23 13:40:02,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:40:02,645 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:02,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:02,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:40:02,646 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:02,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:02,646 INFO L82 PathProgramCache]: Analyzing trace with hash -809970744, now seen corresponding path program 1 times [2020-12-23 13:40:02,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:02,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615893338] [2020-12-23 13:40:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:40:02,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615893338] [2020-12-23 13:40:02,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:02,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:40:02,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928779118] [2020-12-23 13:40:02,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:40:02,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:02,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:40:02,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:40:02,699 INFO L87 Difference]: Start difference. First operand 45 states and 78 transitions. Second operand 5 states. [2020-12-23 13:40:02,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:02,732 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2020-12-23 13:40:02,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:40:02,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 13:40:02,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:02,733 INFO L225 Difference]: With dead ends: 35 [2020-12-23 13:40:02,733 INFO L226 Difference]: Without dead ends: 27 [2020-12-23 13:40:02,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:40:02,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-23 13:40:02,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-23 13:40:02,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 13:40:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2020-12-23 13:40:02,735 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 14 [2020-12-23 13:40:02,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:02,736 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-12-23 13:40:02,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:40:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2020-12-23 13:40:02,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 13:40:02,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:02,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:02,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 13:40:02,737 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:02,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:02,738 INFO L82 PathProgramCache]: Analyzing trace with hash -145595207, now seen corresponding path program 1 times [2020-12-23 13:40:02,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:02,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108620522] [2020-12-23 13:40:02,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:40:02,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108620522] [2020-12-23 13:40:02,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:02,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:40:02,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914211602] [2020-12-23 13:40:02,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:40:02,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:02,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:40:02,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:40:02,796 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 6 states. [2020-12-23 13:40:02,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:02,831 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2020-12-23 13:40:02,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:40:02,832 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 13:40:02,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:02,832 INFO L225 Difference]: With dead ends: 21 [2020-12-23 13:40:02,832 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:40:02,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:40:02,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:40:02,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:40:02,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:40:02,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:40:02,834 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-23 13:40:02,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:02,834 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:40:02,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:40:02,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:40:02,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:40:02,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 13:40:02,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:40:02 BasicIcfg [2020-12-23 13:40:02,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:40:02,839 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:40:02,839 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:40:02,840 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:40:02,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:39:57" (3/4) ... [2020-12-23 13:40:02,844 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:40:02,852 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:40:02,852 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:40:02,853 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:40:02,858 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 13:40:02,858 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:40:02,858 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:40:02,859 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:40:02,903 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe009_tso.opt.i-witness.graphml [2020-12-23 13:40:02,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:40:02,905 INFO L168 Benchmark]: Toolchain (without parser) took 7181.88 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 138.2 MB in the beginning and 77.6 MB in the end (delta: 60.6 MB). Peak memory consumption was 95.2 MB. Max. memory is 8.0 GB. [2020-12-23 13:40:02,905 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 163.6 MB. Free memory is still 138.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:40:02,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 892.61 ms. Allocated memory is still 163.6 MB. Free memory was 138.0 MB in the beginning and 140.0 MB in the end (delta: -2.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 8.0 GB. [2020-12-23 13:40:02,907 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.49 ms. Allocated memory is still 163.6 MB. Free memory was 140.0 MB in the beginning and 137.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:40:02,907 INFO L168 Benchmark]: Boogie Preprocessor took 29.56 ms. Allocated memory is still 163.6 MB. Free memory was 137.9 MB in the beginning and 136.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:40:02,908 INFO L168 Benchmark]: RCFGBuilder took 621.79 ms. Allocated memory is still 163.6 MB. Free memory was 136.3 MB in the beginning and 114.8 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:40:02,909 INFO L168 Benchmark]: TraceAbstraction took 5507.58 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 114.3 MB in the beginning and 80.7 MB in the end (delta: 33.6 MB). Peak memory consumption was 67.6 MB. Max. memory is 8.0 GB. [2020-12-23 13:40:02,909 INFO L168 Benchmark]: Witness Printer took 64.38 ms. Allocated memory is still 197.1 MB. Free memory was 80.7 MB in the beginning and 77.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:40:02,913 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 163.6 MB. Free memory is still 138.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 892.61 ms. Allocated memory is still 163.6 MB. Free memory was 138.0 MB in the beginning and 140.0 MB in the end (delta: -2.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.49 ms. Allocated memory is still 163.6 MB. Free memory was 140.0 MB in the beginning and 137.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.56 ms. Allocated memory is still 163.6 MB. Free memory was 137.9 MB in the beginning and 136.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 621.79 ms. Allocated memory is still 163.6 MB. Free memory was 136.3 MB in the beginning and 114.8 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5507.58 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 114.3 MB in the beginning and 80.7 MB in the end (delta: 33.6 MB). Peak memory consumption was 67.6 MB. Max. memory is 8.0 GB. * Witness Printer took 64.38 ms. Allocated memory is still 197.1 MB. Free memory was 80.7 MB in the beginning and 77.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 799 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.3s, 81 PlacesBefore, 31 PlacesAfterwards, 73 TransitionsBefore, 22 TransitionsAfterwards, 1220 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2044 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, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 236 SDtfs, 261 SDslu, 362 SDs, 0 SdLazy, 136 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred 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, 11 MinimizatonAttempts, 188 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 5242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...