/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/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:32:54,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:32:54,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:32:54,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:32:54,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:32:54,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:32:54,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:32:54,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:32:54,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:32:54,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:32:54,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:32:54,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:32:54,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:32:54,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:32:54,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:32:54,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:32:54,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:32:54,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:32:54,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:32:54,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:32:54,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:32:54,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:32:54,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:32:54,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:32:54,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 08:32:54,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 08:32:54,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 08:32:54,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 08:32:54,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 08:32:54,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 08:32:54,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:32:54,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:32:54,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:32:54,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:32:54,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:32:54,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:32:54,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:32:54,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:32:54,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:32:54,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:32:54,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:32:54,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:32:54,265 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:32:54,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:32:54,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:32:54,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:32:54,269 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:32:54,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:32:54,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:32:54,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:32:54,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:32:54,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:32:54,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:32:54,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:32:54,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:32:54,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:32:54,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:32:54,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:32:54,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:32:54,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:32:54,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:32:54,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:32:54,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:32:54,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:32:54,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:32:54,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:32:54,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:32:54,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:32:54,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:32:54,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:32:54,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:32:54,703 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:32:54,703 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:32:54,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:32:54,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d08410c3/caab6dac8bfd4fb58d052e1fb9c92893/FLAGb1e91d35a [2020-12-22 08:32:55,523 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:32:55,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:32:55,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d08410c3/caab6dac8bfd4fb58d052e1fb9c92893/FLAGb1e91d35a [2020-12-22 08:32:55,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d08410c3/caab6dac8bfd4fb58d052e1fb9c92893 [2020-12-22 08:32:55,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:32:55,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:32:55,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:32:55,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:32:55,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:32:55,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:32:55" (1/1) ... [2020-12-22 08:32:55,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf500f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:55, skipping insertion in model container [2020-12-22 08:32:55,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:32:55" (1/1) ... [2020-12-22 08:32:55,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:32:55,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:32:56,217 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9464,9477] [2020-12-22 08:32:56,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:32:56,346 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:32:56,438 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9464,9477] [2020-12-22 08:32:56,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:32:56,575 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:32:56,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:56 WrapperNode [2020-12-22 08:32:56,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:32:56,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:32:56,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:32:56,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:32:56,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:56" (1/1) ... [2020-12-22 08:32:56,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:56" (1/1) ... [2020-12-22 08:32:56,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:32:56,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:32:56,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:32:56,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:32:56,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:56" (1/1) ... [2020-12-22 08:32:56,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:56" (1/1) ... [2020-12-22 08:32:56,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:56" (1/1) ... [2020-12-22 08:32:56,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:56" (1/1) ... [2020-12-22 08:32:56,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:56" (1/1) ... [2020-12-22 08:32:56,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:56" (1/1) ... [2020-12-22 08:32:56,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:56" (1/1) ... [2020-12-22 08:32:56,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:32:56,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:32:56,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:32:56,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:32:56,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:32:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:32:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:32:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:32:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:32:58,307 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:32:58,308 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:32:58,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:32:58 BoogieIcfgContainer [2020-12-22 08:32:58,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:32:58,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:32:58,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:32:58,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:32:58,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:32:55" (1/3) ... [2020-12-22 08:32:58,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf3355f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:32:58, skipping insertion in model container [2020-12-22 08:32:58,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:56" (2/3) ... [2020-12-22 08:32:58,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf3355f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:32:58, skipping insertion in model container [2020-12-22 08:32:58,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:32:58" (3/3) ... [2020-12-22 08:32:58,320 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:32:58,327 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:32:58,332 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:32:58,349 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:32:58,379 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:32:58,380 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:32:58,380 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:32:58,380 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:32:58,380 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:32:58,380 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:32:58,381 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:32:58,381 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:32:58,403 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-12-22 08:32:58,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 08:32:58,416 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:58,417 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:58,417 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:58,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:58,424 INFO L82 PathProgramCache]: Analyzing trace with hash -165426501, now seen corresponding path program 1 times [2020-12-22 08:32:58,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:58,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582085780] [2020-12-22 08:32:58,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:58,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582085780] [2020-12-22 08:32:58,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:58,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:58,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994859862] [2020-12-22 08:32:58,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:58,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:58,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:58,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:58,987 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 3 states. [2020-12-22 08:32:59,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:59,198 INFO L93 Difference]: Finished difference Result 521 states and 862 transitions. [2020-12-22 08:32:59,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:59,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-22 08:32:59,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:59,245 INFO L225 Difference]: With dead ends: 521 [2020-12-22 08:32:59,245 INFO L226 Difference]: Without dead ends: 395 [2020-12-22 08:32:59,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:59,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-12-22 08:32:59,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 393. [2020-12-22 08:32:59,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-12-22 08:32:59,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 591 transitions. [2020-12-22 08:32:59,329 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 591 transitions. Word has length 96 [2020-12-22 08:32:59,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:59,330 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 591 transitions. [2020-12-22 08:32:59,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:32:59,330 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 591 transitions. [2020-12-22 08:32:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 08:32:59,334 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:59,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:59,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:32:59,335 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:59,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:59,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1176866191, now seen corresponding path program 1 times [2020-12-22 08:32:59,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:59,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821223645] [2020-12-22 08:32:59,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:59,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821223645] [2020-12-22 08:32:59,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:59,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:32:59,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622921323] [2020-12-22 08:32:59,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:32:59,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:59,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:32:59,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:32:59,922 INFO L87 Difference]: Start difference. First operand 393 states and 591 transitions. Second operand 8 states. [2020-12-22 08:33:00,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:00,423 INFO L93 Difference]: Finished difference Result 1958 states and 3049 transitions. [2020-12-22 08:33:00,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:33:00,424 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-12-22 08:33:00,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:00,434 INFO L225 Difference]: With dead ends: 1958 [2020-12-22 08:33:00,435 INFO L226 Difference]: Without dead ends: 1664 [2020-12-22 08:33:00,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:33:00,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-12-22 08:33:00,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1654. [2020-12-22 08:33:00,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1654 states. [2020-12-22 08:33:00,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2569 transitions. [2020-12-22 08:33:00,563 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2569 transitions. Word has length 97 [2020-12-22 08:33:00,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:00,566 INFO L481 AbstractCegarLoop]: Abstraction has 1654 states and 2569 transitions. [2020-12-22 08:33:00,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:33:00,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2569 transitions. [2020-12-22 08:33:00,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:33:00,577 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:00,578 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:00,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:33:00,578 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:00,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:00,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1298319018, now seen corresponding path program 1 times [2020-12-22 08:33:00,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:00,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369920357] [2020-12-22 08:33:00,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:00,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:33:00,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369920357] [2020-12-22 08:33:00,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:00,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:33:00,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154921249] [2020-12-22 08:33:00,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:33:00,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:00,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:33:00,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:33:00,813 INFO L87 Difference]: Start difference. First operand 1654 states and 2569 transitions. Second operand 6 states. [2020-12-22 08:33:01,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:01,515 INFO L93 Difference]: Finished difference Result 5696 states and 8963 transitions. [2020-12-22 08:33:01,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:33:01,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-12-22 08:33:01,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:01,539 INFO L225 Difference]: With dead ends: 5696 [2020-12-22 08:33:01,539 INFO L226 Difference]: Without dead ends: 4093 [2020-12-22 08:33:01,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:33:01,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2020-12-22 08:33:01,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 4089. [2020-12-22 08:33:01,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4089 states. [2020-12-22 08:33:01,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4089 states to 4089 states and 6423 transitions. [2020-12-22 08:33:01,858 INFO L78 Accepts]: Start accepts. Automaton has 4089 states and 6423 transitions. Word has length 98 [2020-12-22 08:33:01,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:01,858 INFO L481 AbstractCegarLoop]: Abstraction has 4089 states and 6423 transitions. [2020-12-22 08:33:01,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:33:01,859 INFO L276 IsEmpty]: Start isEmpty. Operand 4089 states and 6423 transitions. [2020-12-22 08:33:01,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:33:01,863 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:01,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:01,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:33:01,864 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:01,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:01,865 INFO L82 PathProgramCache]: Analyzing trace with hash -2114426094, now seen corresponding path program 1 times [2020-12-22 08:33:01,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:01,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586736159] [2020-12-22 08:33:01,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:33:01,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586736159] [2020-12-22 08:33:01,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:01,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:33:01,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074366436] [2020-12-22 08:33:01,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:33:01,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:01,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:33:01,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:33:01,999 INFO L87 Difference]: Start difference. First operand 4089 states and 6423 transitions. Second operand 5 states. [2020-12-22 08:33:02,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:02,861 INFO L93 Difference]: Finished difference Result 11204 states and 17678 transitions. [2020-12-22 08:33:02,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:33:02,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 08:33:02,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:02,899 INFO L225 Difference]: With dead ends: 11204 [2020-12-22 08:33:02,900 INFO L226 Difference]: Without dead ends: 7272 [2020-12-22 08:33:02,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:33:02,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2020-12-22 08:33:03,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7270. [2020-12-22 08:33:03,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7270 states. [2020-12-22 08:33:03,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7270 states to 7270 states and 11413 transitions. [2020-12-22 08:33:03,448 INFO L78 Accepts]: Start accepts. Automaton has 7270 states and 11413 transitions. Word has length 98 [2020-12-22 08:33:03,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:03,449 INFO L481 AbstractCegarLoop]: Abstraction has 7270 states and 11413 transitions. [2020-12-22 08:33:03,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:33:03,450 INFO L276 IsEmpty]: Start isEmpty. Operand 7270 states and 11413 transitions. [2020-12-22 08:33:03,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:33:03,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:03,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:03,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:33:03,456 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:03,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:03,457 INFO L82 PathProgramCache]: Analyzing trace with hash -280718047, now seen corresponding path program 1 times [2020-12-22 08:33:03,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:03,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858655086] [2020-12-22 08:33:03,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:03,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:33:03,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858655086] [2020-12-22 08:33:03,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:03,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:33:03,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495971316] [2020-12-22 08:33:03,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:33:03,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:03,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:33:03,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:33:03,607 INFO L87 Difference]: Start difference. First operand 7270 states and 11413 transitions. Second operand 5 states. [2020-12-22 08:33:04,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:04,890 INFO L93 Difference]: Finished difference Result 20652 states and 32549 transitions. [2020-12-22 08:33:04,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:33:04,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 08:33:04,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:04,988 INFO L225 Difference]: With dead ends: 20652 [2020-12-22 08:33:04,989 INFO L226 Difference]: Without dead ends: 13580 [2020-12-22 08:33:05,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:33:05,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13580 states. [2020-12-22 08:33:05,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13580 to 13578. [2020-12-22 08:33:05,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13578 states. [2020-12-22 08:33:06,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13578 states to 13578 states and 21317 transitions. [2020-12-22 08:33:06,032 INFO L78 Accepts]: Start accepts. Automaton has 13578 states and 21317 transitions. Word has length 98 [2020-12-22 08:33:06,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:06,032 INFO L481 AbstractCegarLoop]: Abstraction has 13578 states and 21317 transitions. [2020-12-22 08:33:06,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:33:06,032 INFO L276 IsEmpty]: Start isEmpty. Operand 13578 states and 21317 transitions. [2020-12-22 08:33:06,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:33:06,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:06,039 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:06,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:33:06,039 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:06,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:06,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1024308035, now seen corresponding path program 1 times [2020-12-22 08:33:06,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:06,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596461793] [2020-12-22 08:33:06,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:33:06,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596461793] [2020-12-22 08:33:06,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:06,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:33:06,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128851019] [2020-12-22 08:33:06,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:33:06,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:06,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:33:06,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:33:06,200 INFO L87 Difference]: Start difference. First operand 13578 states and 21317 transitions. Second operand 5 states. [2020-12-22 08:33:08,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:08,144 INFO L93 Difference]: Finished difference Result 39834 states and 62629 transitions. [2020-12-22 08:33:08,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:33:08,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 08:33:08,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:08,216 INFO L225 Difference]: With dead ends: 39834 [2020-12-22 08:33:08,216 INFO L226 Difference]: Without dead ends: 26376 [2020-12-22 08:33:08,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:33:08,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26376 states. [2020-12-22 08:33:09,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26376 to 26374. [2020-12-22 08:33:09,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26374 states. [2020-12-22 08:33:10,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26374 states to 26374 states and 41274 transitions. [2020-12-22 08:33:10,060 INFO L78 Accepts]: Start accepts. Automaton has 26374 states and 41274 transitions. Word has length 98 [2020-12-22 08:33:10,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:10,061 INFO L481 AbstractCegarLoop]: Abstraction has 26374 states and 41274 transitions. [2020-12-22 08:33:10,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:33:10,061 INFO L276 IsEmpty]: Start isEmpty. Operand 26374 states and 41274 transitions. [2020-12-22 08:33:10,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:33:10,074 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:10,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:10,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:33:10,075 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:10,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:10,076 INFO L82 PathProgramCache]: Analyzing trace with hash -866521676, now seen corresponding path program 1 times [2020-12-22 08:33:10,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:10,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795630330] [2020-12-22 08:33:10,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:33:10,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795630330] [2020-12-22 08:33:10,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:10,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:33:10,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777140629] [2020-12-22 08:33:10,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:33:10,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:10,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:33:10,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:33:10,223 INFO L87 Difference]: Start difference. First operand 26374 states and 41274 transitions. Second operand 6 states. [2020-12-22 08:33:14,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:14,151 INFO L93 Difference]: Finished difference Result 102510 states and 160403 transitions. [2020-12-22 08:33:14,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:33:14,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-12-22 08:33:14,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:14,354 INFO L225 Difference]: With dead ends: 102510 [2020-12-22 08:33:14,355 INFO L226 Difference]: Without dead ends: 76226 [2020-12-22 08:33:14,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:33:14,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76226 states. [2020-12-22 08:33:18,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76226 to 76222. [2020-12-22 08:33:18,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76222 states. [2020-12-22 08:33:18,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76222 states to 76222 states and 118816 transitions. [2020-12-22 08:33:18,853 INFO L78 Accepts]: Start accepts. Automaton has 76222 states and 118816 transitions. Word has length 98 [2020-12-22 08:33:18,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:18,853 INFO L481 AbstractCegarLoop]: Abstraction has 76222 states and 118816 transitions. [2020-12-22 08:33:18,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:33:18,853 INFO L276 IsEmpty]: Start isEmpty. Operand 76222 states and 118816 transitions. [2020-12-22 08:33:18,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:33:18,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:18,872 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:18,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:33:18,873 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:18,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:18,874 INFO L82 PathProgramCache]: Analyzing trace with hash -677209499, now seen corresponding path program 1 times [2020-12-22 08:33:18,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:18,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012109455] [2020-12-22 08:33:18,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:33:18,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012109455] [2020-12-22 08:33:18,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:18,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:33:18,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388972717] [2020-12-22 08:33:18,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:33:18,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:18,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:33:18,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:33:18,994 INFO L87 Difference]: Start difference. First operand 76222 states and 118816 transitions. Second operand 6 states. [2020-12-22 08:33:30,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:30,628 INFO L93 Difference]: Finished difference Result 298425 states and 464628 transitions. [2020-12-22 08:33:30,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:33:30,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-12-22 08:33:30,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:31,343 INFO L225 Difference]: With dead ends: 298425 [2020-12-22 08:33:31,343 INFO L226 Difference]: Without dead ends: 222270 [2020-12-22 08:33:31,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:33:31,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222270 states. [2020-12-22 08:33:43,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222270 to 222266. [2020-12-22 08:33:43,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222266 states. [2020-12-22 08:33:44,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222266 states to 222266 states and 344491 transitions. [2020-12-22 08:33:44,108 INFO L78 Accepts]: Start accepts. Automaton has 222266 states and 344491 transitions. Word has length 98 [2020-12-22 08:33:44,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:44,108 INFO L481 AbstractCegarLoop]: Abstraction has 222266 states and 344491 transitions. [2020-12-22 08:33:44,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:33:44,109 INFO L276 IsEmpty]: Start isEmpty. Operand 222266 states and 344491 transitions. [2020-12-22 08:33:44,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:33:44,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:44,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:44,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:33:44,153 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:44,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:44,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1615132955, now seen corresponding path program 1 times [2020-12-22 08:33:44,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:44,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037408028] [2020-12-22 08:33:44,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:44,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:33:44,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037408028] [2020-12-22 08:33:44,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:44,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:33:44,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503730904] [2020-12-22 08:33:44,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:33:44,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:44,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:33:44,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:33:44,300 INFO L87 Difference]: Start difference. First operand 222266 states and 344491 transitions. Second operand 5 states. [2020-12-22 08:34:05,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:05,188 INFO L93 Difference]: Finished difference Result 422548 states and 651932 transitions. [2020-12-22 08:34:05,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:34:05,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-12-22 08:34:05,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:06,080 INFO L225 Difference]: With dead ends: 422548 [2020-12-22 08:34:06,081 INFO L226 Difference]: Without dead ends: 422546 [2020-12-22 08:34:06,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:34:06,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422546 states. [2020-12-22 08:34:21,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422546 to 224714. [2020-12-22 08:34:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224714 states. [2020-12-22 08:34:22,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224714 states to 224714 states and 346939 transitions. [2020-12-22 08:34:22,316 INFO L78 Accepts]: Start accepts. Automaton has 224714 states and 346939 transitions. Word has length 99 [2020-12-22 08:34:22,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:22,317 INFO L481 AbstractCegarLoop]: Abstraction has 224714 states and 346939 transitions. [2020-12-22 08:34:22,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:34:22,317 INFO L276 IsEmpty]: Start isEmpty. Operand 224714 states and 346939 transitions. [2020-12-22 08:34:22,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 08:34:22,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:22,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:34:22,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:34:22,357 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:22,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:22,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1815671702, now seen corresponding path program 1 times [2020-12-22 08:34:22,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:22,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224982808] [2020-12-22 08:34:22,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:22,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:22,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224982808] [2020-12-22 08:34:22,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:22,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:34:22,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314298312] [2020-12-22 08:34:22,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:34:22,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:22,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:34:22,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:34:22,675 INFO L87 Difference]: Start difference. First operand 224714 states and 346939 transitions. Second operand 10 states.