/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/safe016_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:34:15,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:34:16,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:34:16,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:34:16,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:34:16,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:34:16,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:34:16,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:34:16,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:34:16,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:34:16,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:34:16,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:34:16,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:34:16,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:34:16,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:34:16,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:34:16,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:34:16,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:34:16,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:34:16,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:34:16,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:34:16,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:34:16,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:34:16,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:34:16,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 23:34:16,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 23:34:16,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 23:34:16,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 23:34:16,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 23:34:16,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 23:34:16,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 23:34:16,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 23:34:16,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 23:34:16,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:34:16,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:34:16,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:34:16,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 23:34:16,119 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:34:16,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:34:16,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:34:16,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:34:16,122 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:34:16,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:34:16,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:34:16,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:34:16,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:34:16,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:34:16,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:34:16,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:34:16,124 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:34:16,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:34:16,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:34:16,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:34:16,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:34:16,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:34:16,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:34:16,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:34:16,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:34:16,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:34:16,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:34:16,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:34:16,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:34:16,127 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:34:16,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:34:16,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:34:16,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:34:16,527 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:34:16,529 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:34:16,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i [2021-01-06 23:34:16,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8377881b6/a1c0e2e217be483192a121c678a3e3bd/FLAG56a7dbeb4 [2021-01-06 23:34:17,409 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:34:17,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i [2021-01-06 23:34:17,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8377881b6/a1c0e2e217be483192a121c678a3e3bd/FLAG56a7dbeb4 [2021-01-06 23:34:17,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8377881b6/a1c0e2e217be483192a121c678a3e3bd [2021-01-06 23:34:17,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:34:17,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:34:17,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:34:17,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:34:17,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:34:17,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:34:17" (1/1) ... [2021-01-06 23:34:17,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322ae73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:17, skipping insertion in model container [2021-01-06 23:34:17,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:34:17" (1/1) ... [2021-01-06 23:34:17,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:34:17,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:34:18,001 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/safe016_pso.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[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_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$tmp_guard1~0,GLOBAL] [2021-01-06 23:34:18,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:34:18,243 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:34:18,258 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:34:18,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:34:18,413 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:34:18,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:18 WrapperNode [2021-01-06 23:34:18,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:34:18,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:34:18,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:34:18,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:34:18,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:18" (1/1) ... [2021-01-06 23:34:18,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:18" (1/1) ... [2021-01-06 23:34:18,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:34:18,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:34:18,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:34:18,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:34:18,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:18" (1/1) ... [2021-01-06 23:34:18,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:18" (1/1) ... [2021-01-06 23:34:18,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:18" (1/1) ... [2021-01-06 23:34:18,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:18" (1/1) ... [2021-01-06 23:34:18,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:18" (1/1) ... [2021-01-06 23:34:18,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:18" (1/1) ... [2021-01-06 23:34:18,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:18" (1/1) ... [2021-01-06 23:34:18,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:34:18,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:34:18,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:34:18,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:34:18,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:18" (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 [2021-01-06 23:34:18,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:34:18,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:34:18,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:34:18,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:34:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-06 23:34:18,603 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-06 23:34:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-06 23:34:18,604 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-06 23:34:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-06 23:34:18,605 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-06 23:34:18,605 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-01-06 23:34:18,608 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-01-06 23:34:18,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:34:18,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:34:18,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:34:18,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:34:18,612 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-06 23:34:19,086 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:34:19,087 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-06 23:34:19,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:34:19 BoogieIcfgContainer [2021-01-06 23:34:19,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:34:19,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:34:19,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:34:19,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:34:19,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:34:17" (1/3) ... [2021-01-06 23:34:19,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3c15ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:34:19, skipping insertion in model container [2021-01-06 23:34:19,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:18" (2/3) ... [2021-01-06 23:34:19,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3c15ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:34:19, skipping insertion in model container [2021-01-06 23:34:19,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:34:19" (3/3) ... [2021-01-06 23:34:19,108 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2021-01-06 23:34:19,120 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:34:19,120 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:34:19,125 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:34:19,127 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:34:19,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,186 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,186 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,187 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,187 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,188 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,188 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,189 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,190 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,190 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,190 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,190 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,191 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,191 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,191 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,192 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,192 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,199 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,200 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,201 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,201 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,202 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,202 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,204 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,205 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,207 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,207 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,209 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,209 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,209 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,209 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,210 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,210 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,210 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,211 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,211 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,211 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,211 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,212 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,215 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,216 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,216 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,217 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,225 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,225 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,225 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,226 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,230 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,230 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,230 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,231 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,244 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,244 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,244 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,245 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:19,252 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:34:19,277 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-01-06 23:34:19,322 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:34:19,322 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:34:19,323 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:34:19,323 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:34:19,324 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:34:19,324 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:34:19,324 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:34:19,324 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:34:19,350 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:34:19,353 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 85 transitions, 190 flow [2021-01-06 23:34:19,358 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 85 transitions, 190 flow [2021-01-06 23:34:19,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 85 transitions, 190 flow [2021-01-06 23:34:19,456 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-01-06 23:34:19,457 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:34:19,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-01-06 23:34:19,470 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2021-01-06 23:34:22,005 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-01-06 23:34:22,152 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-01-06 23:34:22,608 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 23:34:22,942 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 23:34:23,045 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-01-06 23:34:23,117 INFO L131 LiptonReduction]: Checked pairs total: 3411 [2021-01-06 23:34:23,118 INFO L133 LiptonReduction]: Total number of compositions: 70 [2021-01-06 23:34:23,125 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2021-01-06 23:34:23,187 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2021-01-06 23:34:23,190 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2021-01-06 23:34:23,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:34:23,201 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:23,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:23,202 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:23,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:23,208 INFO L82 PathProgramCache]: Analyzing trace with hash -975438877, now seen corresponding path program 1 times [2021-01-06 23:34:23,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:23,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261849733] [2021-01-06 23:34:23,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:23,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261849733] [2021-01-06 23:34:23,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:23,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:34:23,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760829291] [2021-01-06 23:34:23,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 23:34:23,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:23,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 23:34:23,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 23:34:23,508 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2021-01-06 23:34:23,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:23,579 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2021-01-06 23:34:23,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 23:34:23,581 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 23:34:23,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:23,622 INFO L225 Difference]: With dead ends: 850 [2021-01-06 23:34:23,623 INFO L226 Difference]: Without dead ends: 706 [2021-01-06 23:34:23,624 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 [2021-01-06 23:34:23,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-01-06 23:34:23,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2021-01-06 23:34:23,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2021-01-06 23:34:23,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2021-01-06 23:34:23,800 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2021-01-06 23:34:23,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:23,801 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2021-01-06 23:34:23,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 23:34:23,802 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2021-01-06 23:34:23,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:34:23,808 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:23,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:23,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:34:23,809 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:23,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:23,814 INFO L82 PathProgramCache]: Analyzing trace with hash -173841252, now seen corresponding path program 1 times [2021-01-06 23:34:23,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:23,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503848250] [2021-01-06 23:34:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:24,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503848250] [2021-01-06 23:34:24,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:24,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:34:24,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344204652] [2021-01-06 23:34:24,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:34:24,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:24,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:34:24,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:34:24,049 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2021-01-06 23:34:24,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:24,123 INFO L93 Difference]: Finished difference Result 1412 states and 4631 transitions. [2021-01-06 23:34:24,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:34:24,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 23:34:24,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:24,136 INFO L225 Difference]: With dead ends: 1412 [2021-01-06 23:34:24,137 INFO L226 Difference]: Without dead ends: 1104 [2021-01-06 23:34:24,138 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 [2021-01-06 23:34:24,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2021-01-06 23:34:24,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 904. [2021-01-06 23:34:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2021-01-06 23:34:24,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 3004 transitions. [2021-01-06 23:34:24,193 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 3004 transitions. Word has length 11 [2021-01-06 23:34:24,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:24,194 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 3004 transitions. [2021-01-06 23:34:24,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:34:24,194 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 3004 transitions. [2021-01-06 23:34:24,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:34:24,197 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:24,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:24,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:34:24,198 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:24,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:24,198 INFO L82 PathProgramCache]: Analyzing trace with hash -892982348, now seen corresponding path program 1 times [2021-01-06 23:34:24,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:24,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636840943] [2021-01-06 23:34:24,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:24,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636840943] [2021-01-06 23:34:24,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:24,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:34:24,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114180540] [2021-01-06 23:34:24,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:34:24,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:24,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:34:24,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:34:24,364 INFO L87 Difference]: Start difference. First operand 904 states and 3004 transitions. Second operand 5 states. [2021-01-06 23:34:24,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:24,455 INFO L93 Difference]: Finished difference Result 1245 states and 3917 transitions. [2021-01-06 23:34:24,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:34:24,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:34:24,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:24,466 INFO L225 Difference]: With dead ends: 1245 [2021-01-06 23:34:24,466 INFO L226 Difference]: Without dead ends: 1014 [2021-01-06 23:34:24,466 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 [2021-01-06 23:34:24,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-01-06 23:34:24,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 806. [2021-01-06 23:34:24,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2021-01-06 23:34:24,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 2638 transitions. [2021-01-06 23:34:24,509 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 2638 transitions. Word has length 12 [2021-01-06 23:34:24,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:24,509 INFO L481 AbstractCegarLoop]: Abstraction has 806 states and 2638 transitions. [2021-01-06 23:34:24,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:34:24,510 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 2638 transitions. [2021-01-06 23:34:24,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:34:24,512 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:24,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:24,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:34:24,512 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:24,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:24,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1094137873, now seen corresponding path program 1 times [2021-01-06 23:34:24,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:24,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305819192] [2021-01-06 23:34:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:24,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305819192] [2021-01-06 23:34:24,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:24,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:34:24,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677264060] [2021-01-06 23:34:24,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:34:24,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:24,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:34:24,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:34:24,584 INFO L87 Difference]: Start difference. First operand 806 states and 2638 transitions. Second operand 5 states. [2021-01-06 23:34:24,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:24,668 INFO L93 Difference]: Finished difference Result 1094 states and 3416 transitions. [2021-01-06 23:34:24,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:34:24,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:34:24,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:24,677 INFO L225 Difference]: With dead ends: 1094 [2021-01-06 23:34:24,677 INFO L226 Difference]: Without dead ends: 934 [2021-01-06 23:34:24,678 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 [2021-01-06 23:34:24,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-01-06 23:34:24,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 710. [2021-01-06 23:34:24,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 710 states. [2021-01-06 23:34:24,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2290 transitions. [2021-01-06 23:34:24,714 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2290 transitions. Word has length 12 [2021-01-06 23:34:24,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:24,715 INFO L481 AbstractCegarLoop]: Abstraction has 710 states and 2290 transitions. [2021-01-06 23:34:24,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:34:24,715 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2290 transitions. [2021-01-06 23:34:24,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 23:34:24,717 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:24,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:24,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 23:34:24,717 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:24,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:24,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1912675369, now seen corresponding path program 1 times [2021-01-06 23:34:24,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:24,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853748491] [2021-01-06 23:34:24,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:24,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:24,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853748491] [2021-01-06 23:34:24,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:24,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:34:24,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466572998] [2021-01-06 23:34:24,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:34:24,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:24,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:34:24,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:34:24,801 INFO L87 Difference]: Start difference. First operand 710 states and 2290 transitions. Second operand 5 states. [2021-01-06 23:34:24,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:24,903 INFO L93 Difference]: Finished difference Result 1024 states and 3137 transitions. [2021-01-06 23:34:24,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:34:24,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 23:34:24,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:24,911 INFO L225 Difference]: With dead ends: 1024 [2021-01-06 23:34:24,911 INFO L226 Difference]: Without dead ends: 874 [2021-01-06 23:34:24,912 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 [2021-01-06 23:34:24,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-01-06 23:34:24,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 666. [2021-01-06 23:34:24,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2021-01-06 23:34:24,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 2118 transitions. [2021-01-06 23:34:24,943 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 2118 transitions. Word has length 13 [2021-01-06 23:34:24,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:24,943 INFO L481 AbstractCegarLoop]: Abstraction has 666 states and 2118 transitions. [2021-01-06 23:34:24,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:34:24,943 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 2118 transitions. [2021-01-06 23:34:24,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:34:24,945 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:24,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:24,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 23:34:24,945 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:24,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:24,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1163214657, now seen corresponding path program 1 times [2021-01-06 23:34:24,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:24,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979485435] [2021-01-06 23:34:24,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:25,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979485435] [2021-01-06 23:34:25,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:25,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:34:25,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975404819] [2021-01-06 23:34:25,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:34:25,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:25,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:34:25,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:34:25,010 INFO L87 Difference]: Start difference. First operand 666 states and 2118 transitions. Second operand 5 states. [2021-01-06 23:34:25,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:25,083 INFO L93 Difference]: Finished difference Result 1050 states and 3172 transitions. [2021-01-06 23:34:25,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:34:25,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 23:34:25,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:25,090 INFO L225 Difference]: With dead ends: 1050 [2021-01-06 23:34:25,090 INFO L226 Difference]: Without dead ends: 802 [2021-01-06 23:34:25,091 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 [2021-01-06 23:34:25,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2021-01-06 23:34:25,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 586. [2021-01-06 23:34:25,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2021-01-06 23:34:25,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1786 transitions. [2021-01-06 23:34:25,119 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1786 transitions. Word has length 14 [2021-01-06 23:34:25,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:25,119 INFO L481 AbstractCegarLoop]: Abstraction has 586 states and 1786 transitions. [2021-01-06 23:34:25,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:34:25,119 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1786 transitions. [2021-01-06 23:34:25,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:34:25,121 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:25,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:25,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 23:34:25,122 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:25,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:25,123 INFO L82 PathProgramCache]: Analyzing trace with hash -2014475768, now seen corresponding path program 1 times [2021-01-06 23:34:25,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:25,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125849448] [2021-01-06 23:34:25,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:25,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125849448] [2021-01-06 23:34:25,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:25,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:34:25,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336442105] [2021-01-06 23:34:25,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:34:25,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:25,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:34:25,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:34:25,202 INFO L87 Difference]: Start difference. First operand 586 states and 1786 transitions. Second operand 6 states. [2021-01-06 23:34:25,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:25,262 INFO L93 Difference]: Finished difference Result 990 states and 2964 transitions. [2021-01-06 23:34:25,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:34:25,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-01-06 23:34:25,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:25,268 INFO L225 Difference]: With dead ends: 990 [2021-01-06 23:34:25,268 INFO L226 Difference]: Without dead ends: 570 [2021-01-06 23:34:25,269 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 [2021-01-06 23:34:25,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-01-06 23:34:25,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 442. [2021-01-06 23:34:25,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2021-01-06 23:34:25,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1340 transitions. [2021-01-06 23:34:25,288 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1340 transitions. Word has length 14 [2021-01-06 23:34:25,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:25,289 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 1340 transitions. [2021-01-06 23:34:25,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:34:25,289 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1340 transitions. [2021-01-06 23:34:25,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:34:25,290 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:25,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:25,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 23:34:25,291 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:25,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:25,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1683713572, now seen corresponding path program 2 times [2021-01-06 23:34:25,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:25,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701630266] [2021-01-06 23:34:25,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:25,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:25,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701630266] [2021-01-06 23:34:25,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:25,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:34:25,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574681611] [2021-01-06 23:34:25,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:34:25,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:25,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:34:25,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:34:25,341 INFO L87 Difference]: Start difference. First operand 442 states and 1340 transitions. Second operand 4 states. [2021-01-06 23:34:25,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:25,362 INFO L93 Difference]: Finished difference Result 466 states and 1380 transitions. [2021-01-06 23:34:25,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:34:25,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 23:34:25,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:25,366 INFO L225 Difference]: With dead ends: 466 [2021-01-06 23:34:25,367 INFO L226 Difference]: Without dead ends: 418 [2021-01-06 23:34:25,369 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 [2021-01-06 23:34:25,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-01-06 23:34:25,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2021-01-06 23:34:25,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2021-01-06 23:34:25,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1252 transitions. [2021-01-06 23:34:25,386 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1252 transitions. Word has length 14 [2021-01-06 23:34:25,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:25,386 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 1252 transitions. [2021-01-06 23:34:25,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:34:25,386 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1252 transitions. [2021-01-06 23:34:25,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 23:34:25,387 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:25,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:25,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 23:34:25,388 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:25,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:25,388 INFO L82 PathProgramCache]: Analyzing trace with hash -672340700, now seen corresponding path program 1 times [2021-01-06 23:34:25,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:25,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308572012] [2021-01-06 23:34:25,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:25,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:25,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308572012] [2021-01-06 23:34:25,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:25,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:34:25,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282641514] [2021-01-06 23:34:25,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:34:25,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:25,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:34:25,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:34:25,502 INFO L87 Difference]: Start difference. First operand 418 states and 1252 transitions. Second operand 5 states. [2021-01-06 23:34:25,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:25,562 INFO L93 Difference]: Finished difference Result 686 states and 1964 transitions. [2021-01-06 23:34:25,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:34:25,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-06 23:34:25,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:25,567 INFO L225 Difference]: With dead ends: 686 [2021-01-06 23:34:25,568 INFO L226 Difference]: Without dead ends: 514 [2021-01-06 23:34:25,568 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 [2021-01-06 23:34:25,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-01-06 23:34:25,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 394. [2021-01-06 23:34:25,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2021-01-06 23:34:25,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1140 transitions. [2021-01-06 23:34:25,585 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1140 transitions. Word has length 15 [2021-01-06 23:34:25,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:25,586 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1140 transitions. [2021-01-06 23:34:25,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:34:25,586 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1140 transitions. [2021-01-06 23:34:25,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 23:34:25,587 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:25,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:25,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 23:34:25,588 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:25,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:25,588 INFO L82 PathProgramCache]: Analyzing trace with hash -671268224, now seen corresponding path program 1 times [2021-01-06 23:34:25,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:25,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388489029] [2021-01-06 23:34:25,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:25,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:25,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388489029] [2021-01-06 23:34:25,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:25,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:34:25,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29501482] [2021-01-06 23:34:25,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 23:34:25,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:25,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 23:34:25,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 23:34:25,627 INFO L87 Difference]: Start difference. First operand 394 states and 1140 transitions. Second operand 3 states. [2021-01-06 23:34:25,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:25,641 INFO L93 Difference]: Finished difference Result 358 states and 974 transitions. [2021-01-06 23:34:25,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 23:34:25,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-01-06 23:34:25,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:25,644 INFO L225 Difference]: With dead ends: 358 [2021-01-06 23:34:25,644 INFO L226 Difference]: Without dead ends: 358 [2021-01-06 23:34:25,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 23:34:25,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-01-06 23:34:25,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-01-06 23:34:25,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-01-06 23:34:25,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 974 transitions. [2021-01-06 23:34:25,658 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 974 transitions. Word has length 15 [2021-01-06 23:34:25,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:25,659 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 974 transitions. [2021-01-06 23:34:25,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 23:34:25,659 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 974 transitions. [2021-01-06 23:34:25,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 23:34:25,686 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:25,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:25,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 23:34:25,687 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:25,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:25,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1195890947, now seen corresponding path program 1 times [2021-01-06 23:34:25,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:25,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34160047] [2021-01-06 23:34:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:25,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:25,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34160047] [2021-01-06 23:34:25,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:25,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:34:25,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441660677] [2021-01-06 23:34:25,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:34:25,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:25,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:34:25,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:34:25,729 INFO L87 Difference]: Start difference. First operand 358 states and 974 transitions. Second operand 4 states. [2021-01-06 23:34:25,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:25,754 INFO L93 Difference]: Finished difference Result 282 states and 692 transitions. [2021-01-06 23:34:25,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:34:25,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-01-06 23:34:25,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:25,757 INFO L225 Difference]: With dead ends: 282 [2021-01-06 23:34:25,757 INFO L226 Difference]: Without dead ends: 282 [2021-01-06 23:34:25,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:34:25,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-01-06 23:34:25,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-01-06 23:34:25,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2021-01-06 23:34:25,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 692 transitions. [2021-01-06 23:34:25,767 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 692 transitions. Word has length 16 [2021-01-06 23:34:25,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:25,767 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 692 transitions. [2021-01-06 23:34:25,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:34:25,768 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 692 transitions. [2021-01-06 23:34:25,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 23:34:25,769 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:25,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:25,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 23:34:25,769 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:25,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:25,770 INFO L82 PathProgramCache]: Analyzing trace with hash 852842, now seen corresponding path program 1 times [2021-01-06 23:34:25,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:25,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000632296] [2021-01-06 23:34:25,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:25,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000632296] [2021-01-06 23:34:25,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:25,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:34:25,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264245252] [2021-01-06 23:34:25,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:34:25,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:25,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:34:25,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:34:25,817 INFO L87 Difference]: Start difference. First operand 282 states and 692 transitions. Second operand 5 states. [2021-01-06 23:34:25,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:25,853 INFO L93 Difference]: Finished difference Result 221 states and 521 transitions. [2021-01-06 23:34:25,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:34:25,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-01-06 23:34:25,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:25,855 INFO L225 Difference]: With dead ends: 221 [2021-01-06 23:34:25,855 INFO L226 Difference]: Without dead ends: 205 [2021-01-06 23:34:25,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:34:25,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-01-06 23:34:25,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2021-01-06 23:34:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2021-01-06 23:34:25,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 477 transitions. [2021-01-06 23:34:25,862 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 477 transitions. Word has length 17 [2021-01-06 23:34:25,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:25,863 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 477 transitions. [2021-01-06 23:34:25,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:34:25,863 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 477 transitions. [2021-01-06 23:34:25,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 23:34:25,864 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:25,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:25,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 23:34:25,864 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:25,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:25,865 INFO L82 PathProgramCache]: Analyzing trace with hash 2041241983, now seen corresponding path program 1 times [2021-01-06 23:34:25,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:25,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141938777] [2021-01-06 23:34:25,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:25,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:25,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141938777] [2021-01-06 23:34:25,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:25,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:34:25,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214511343] [2021-01-06 23:34:25,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:34:25,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:25,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:34:25,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:34:25,923 INFO L87 Difference]: Start difference. First operand 205 states and 477 transitions. Second operand 5 states. [2021-01-06 23:34:25,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:25,961 INFO L93 Difference]: Finished difference Result 258 states and 580 transitions. [2021-01-06 23:34:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:34:25,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2021-01-06 23:34:25,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:25,963 INFO L225 Difference]: With dead ends: 258 [2021-01-06 23:34:25,963 INFO L226 Difference]: Without dead ends: 154 [2021-01-06 23:34:25,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:34:25,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-01-06 23:34:25,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 150. [2021-01-06 23:34:25,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2021-01-06 23:34:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 316 transitions. [2021-01-06 23:34:25,969 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 316 transitions. Word has length 19 [2021-01-06 23:34:25,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:25,969 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 316 transitions. [2021-01-06 23:34:25,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:34:25,970 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 316 transitions. [2021-01-06 23:34:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 23:34:25,970 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:25,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:25,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 23:34:25,971 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:25,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:25,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1152877885, now seen corresponding path program 2 times [2021-01-06 23:34:25,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:25,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917833663] [2021-01-06 23:34:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:26,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:26,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917833663] [2021-01-06 23:34:26,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:26,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 23:34:26,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932712075] [2021-01-06 23:34:26,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:34:26,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:26,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:34:26,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:34:26,028 INFO L87 Difference]: Start difference. First operand 150 states and 316 transitions. Second operand 6 states. [2021-01-06 23:34:26,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:26,067 INFO L93 Difference]: Finished difference Result 129 states and 276 transitions. [2021-01-06 23:34:26,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:34:26,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2021-01-06 23:34:26,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:26,068 INFO L225 Difference]: With dead ends: 129 [2021-01-06 23:34:26,068 INFO L226 Difference]: Without dead ends: 53 [2021-01-06 23:34:26,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:34:26,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-01-06 23:34:26,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-01-06 23:34:26,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-06 23:34:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 96 transitions. [2021-01-06 23:34:26,071 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 96 transitions. Word has length 19 [2021-01-06 23:34:26,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:26,071 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 96 transitions. [2021-01-06 23:34:26,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:34:26,071 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 96 transitions. [2021-01-06 23:34:26,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 23:34:26,072 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:26,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:26,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 23:34:26,072 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:26,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:26,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1281872009, now seen corresponding path program 1 times [2021-01-06 23:34:26,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:26,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439418748] [2021-01-06 23:34:26,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:26,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:26,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439418748] [2021-01-06 23:34:26,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:26,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:34:26,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036301851] [2021-01-06 23:34:26,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:34:26,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:26,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:34:26,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:34:26,143 INFO L87 Difference]: Start difference. First operand 53 states and 96 transitions. Second operand 6 states. [2021-01-06 23:34:26,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:26,170 INFO L93 Difference]: Finished difference Result 52 states and 95 transitions. [2021-01-06 23:34:26,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:34:26,170 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2021-01-06 23:34:26,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:26,171 INFO L225 Difference]: With dead ends: 52 [2021-01-06 23:34:26,171 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:34:26,171 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 [2021-01-06 23:34:26,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:34:26,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:34:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:34:26,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:34:26,172 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-01-06 23:34:26,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:26,172 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:34:26,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:34:26,173 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:34:26,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:34:26,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 23:34:26,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:34:26 BasicIcfg [2021-01-06 23:34:26,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:34:26,178 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:34:26,178 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:34:26,179 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:34:26,179 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:34:19" (3/4) ... [2021-01-06 23:34:26,184 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:34:26,192 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-01-06 23:34:26,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-01-06 23:34:26,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-01-06 23:34:26,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-01-06 23:34:26,199 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-01-06 23:34:26,199 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 23:34:26,199 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:34:26,199 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:34:26,245 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe016_pso.opt.i-witness.graphml [2021-01-06 23:34:26,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:34:26,246 INFO L168 Benchmark]: Toolchain (without parser) took 8622.50 ms. Allocated memory was 157.3 MB in the beginning and 241.2 MB in the end (delta: 83.9 MB). Free memory was 131.5 MB in the beginning and 133.9 MB in the end (delta: -2.4 MB). Peak memory consumption was 83.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:26,247 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 157.3 MB. Free memory is still 129.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:34:26,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.81 ms. Allocated memory is still 157.3 MB. Free memory was 131.3 MB in the beginning and 133.2 MB in the end (delta: -2.0 MB). Peak memory consumption was 29.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:26,248 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.42 ms. Allocated memory is still 157.3 MB. Free memory was 133.2 MB in the beginning and 131.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:26,248 INFO L168 Benchmark]: Boogie Preprocessor took 29.20 ms. Allocated memory is still 157.3 MB. Free memory was 131.2 MB in the beginning and 130.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:26,249 INFO L168 Benchmark]: RCFGBuilder took 596.45 ms. Allocated memory is still 157.3 MB. Free memory was 129.6 MB in the beginning and 106.0 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:26,250 INFO L168 Benchmark]: TraceAbstraction took 7080.03 ms. Allocated memory was 157.3 MB in the beginning and 241.2 MB in the end (delta: 83.9 MB). Free memory was 105.5 MB in the beginning and 136.5 MB in the end (delta: -31.0 MB). Peak memory consumption was 52.9 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:26,250 INFO L168 Benchmark]: Witness Printer took 67.00 ms. Allocated memory is still 241.2 MB. Free memory was 136.5 MB in the beginning and 133.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:26,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 157.3 MB. Free memory is still 129.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 787.81 ms. Allocated memory is still 157.3 MB. Free memory was 131.3 MB in the beginning and 133.2 MB in the end (delta: -2.0 MB). Peak memory consumption was 29.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.42 ms. Allocated memory is still 157.3 MB. Free memory was 133.2 MB in the beginning and 131.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.20 ms. Allocated memory is still 157.3 MB. Free memory was 131.2 MB in the beginning and 130.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 596.45 ms. Allocated memory is still 157.3 MB. Free memory was 129.6 MB in the beginning and 106.0 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7080.03 ms. Allocated memory was 157.3 MB in the beginning and 241.2 MB in the end (delta: 83.9 MB). Free memory was 105.5 MB in the beginning and 136.5 MB in the end (delta: -31.0 MB). Peak memory consumption was 52.9 MB. Max. memory is 8.0 GB. * Witness Printer took 67.00 ms. Allocated memory is still 241.2 MB. Free memory was 136.5 MB in the beginning and 133.9 MB in the end (delta: 2.6 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 1211 VarBasedMoverChecksPositive, 49 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 114 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.7s, 96 PlacesBefore, 39 PlacesAfterwards, 85 TransitionsBefore, 27 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 70 TotalNumberOfCompositions, 3411 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 5 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.8s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 409 SDtfs, 421 SDslu, 694 SDs, 0 SdLazy, 266 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 15 MinimizatonAttempts, 1308 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 207 ConstructedInterpolants, 0 QuantifiedInterpolants, 13199 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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...