/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+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:32:36,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:32:36,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:32:36,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:32:36,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:32:36,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:32:36,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:32:36,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:32:36,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:32:36,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:32:36,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:32:36,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:32:36,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:32:36,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:32:36,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:32:36,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:32:36,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:32:36,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:32:36,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:32:36,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:32:36,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:32:36,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:32:36,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:32:36,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:32:36,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:32:36,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:32:36,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:32:36,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:32:36,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:32:36,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:32:36,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:32:36,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:32:36,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:32:36,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:32:36,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:32:36,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:32:36,710 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:32:36,763 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:32:36,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:32:36,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:32:36,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:32:36,768 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:32:36,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:32:36,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:32:36,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:32:36,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:32:36,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:32:36,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:32:36,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:32:36,771 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:32:36,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:32:36,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:32:36,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:32:36,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:32:36,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:32:36,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:32:36,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:32:36,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:32:36,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:32:36,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:32:36,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:32:36,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:32:36,774 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:32:37,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:32:37,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:32:37,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:32:37,199 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:32:37,202 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:32:37,203 INFO L432 ainManager$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+cfa-reducer.c [2020-12-22 08:32:37,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d58a4b2f1/09851eb48451445e993b73697e8a2085/FLAGed7be0af5 [2020-12-22 08:32:38,011 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:32:38,012 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+cfa-reducer.c [2020-12-22 08:32:38,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d58a4b2f1/09851eb48451445e993b73697e8a2085/FLAGed7be0af5 [2020-12-22 08:32:38,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d58a4b2f1/09851eb48451445e993b73697e8a2085 [2020-12-22 08:32:38,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:32:38,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:32:38,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:32:38,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:32:38,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:32:38,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:32:38" (1/1) ... [2020-12-22 08:32:38,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6854e0ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:38, skipping insertion in model container [2020-12-22 08:32:38,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:32:38" (1/1) ... [2020-12-22 08:32:38,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:32:38,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:32:38,689 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+cfa-reducer.c[6997,7010] [2020-12-22 08:32:38,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:32:38,805 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:32:38,925 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+cfa-reducer.c[6997,7010] [2020-12-22 08:32:38,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:32:39,002 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:32:39,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:39 WrapperNode [2020-12-22 08:32:39,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:32:39,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:32:39,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:32:39,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:32:39,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:39" (1/1) ... [2020-12-22 08:32:39,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:39" (1/1) ... [2020-12-22 08:32:39,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:32:39,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:32:39,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:32:39,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:32:39,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:39" (1/1) ... [2020-12-22 08:32:39,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:39" (1/1) ... [2020-12-22 08:32:39,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:39" (1/1) ... [2020-12-22 08:32:39,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:39" (1/1) ... [2020-12-22 08:32:39,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:39" (1/1) ... [2020-12-22 08:32:39,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:39" (1/1) ... [2020-12-22 08:32:39,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:39" (1/1) ... [2020-12-22 08:32:39,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:32:39,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:32:39,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:32:39,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:32:39,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:39" (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 08:32:39,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:32:39,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:32:39,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:32:39,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:32:40,554 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:32:40,554 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:32:40,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:32:40 BoogieIcfgContainer [2020-12-22 08:32:40,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:32:40,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:32:40,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:32:40,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:32:40,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:32:38" (1/3) ... [2020-12-22 08:32:40,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1fc4c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:32:40, skipping insertion in model container [2020-12-22 08:32:40,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:39" (2/3) ... [2020-12-22 08:32:40,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1fc4c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:32:40, skipping insertion in model container [2020-12-22 08:32:40,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:32:40" (3/3) ... [2020-12-22 08:32:40,567 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:32:40,574 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:32:40,580 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:32:40,602 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:32:40,635 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:32:40,636 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:32:40,636 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:32:40,636 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:32:40,636 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:32:40,636 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:32:40,637 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:32:40,637 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:32:40,660 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2020-12-22 08:32:40,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 08:32:40,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:40,674 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] [2020-12-22 08:32:40,675 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:40,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:40,685 INFO L82 PathProgramCache]: Analyzing trace with hash 2011282842, now seen corresponding path program 1 times [2020-12-22 08:32:40,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:40,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890190291] [2020-12-22 08:32:40,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:41,215 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 08:32:41,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890190291] [2020-12-22 08:32:41,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:41,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:41,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489443403] [2020-12-22 08:32:41,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:41,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:41,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:41,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:41,240 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 3 states. [2020-12-22 08:32:41,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:41,335 INFO L93 Difference]: Finished difference Result 391 states and 633 transitions. [2020-12-22 08:32:41,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:41,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 08:32:41,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:41,370 INFO L225 Difference]: With dead ends: 391 [2020-12-22 08:32:41,371 INFO L226 Difference]: Without dead ends: 264 [2020-12-22 08:32:41,376 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 08:32:41,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-12-22 08:32:41,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2020-12-22 08:32:41,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-22 08:32:41,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 392 transitions. [2020-12-22 08:32:41,466 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 392 transitions. Word has length 74 [2020-12-22 08:32:41,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:41,467 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 392 transitions. [2020-12-22 08:32:41,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:32:41,467 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 392 transitions. [2020-12-22 08:32:41,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 08:32:41,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:41,471 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] [2020-12-22 08:32:41,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:32:41,471 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:41,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:41,472 INFO L82 PathProgramCache]: Analyzing trace with hash -141824057, now seen corresponding path program 1 times [2020-12-22 08:32:41,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:41,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077834851] [2020-12-22 08:32:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:41,656 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 08:32:41,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077834851] [2020-12-22 08:32:41,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:41,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:41,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215082767] [2020-12-22 08:32:41,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:41,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:41,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:41,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:41,661 INFO L87 Difference]: Start difference. First operand 262 states and 392 transitions. Second operand 3 states. [2020-12-22 08:32:41,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:41,744 INFO L93 Difference]: Finished difference Result 666 states and 1036 transitions. [2020-12-22 08:32:41,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:41,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 08:32:41,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:41,753 INFO L225 Difference]: With dead ends: 666 [2020-12-22 08:32:41,753 INFO L226 Difference]: Without dead ends: 448 [2020-12-22 08:32:41,758 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 08:32:41,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-12-22 08:32:41,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 446. [2020-12-22 08:32:41,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-12-22 08:32:41,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 685 transitions. [2020-12-22 08:32:41,852 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 685 transitions. Word has length 75 [2020-12-22 08:32:41,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:41,853 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 685 transitions. [2020-12-22 08:32:41,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:32:41,853 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 685 transitions. [2020-12-22 08:32:41,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:32:41,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:41,857 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] [2020-12-22 08:32:41,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:32:41,857 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:41,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:41,858 INFO L82 PathProgramCache]: Analyzing trace with hash 890430339, now seen corresponding path program 1 times [2020-12-22 08:32:41,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:41,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054508108] [2020-12-22 08:32:41,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:41,964 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 08:32:41,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054508108] [2020-12-22 08:32:41,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:41,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:41,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439550650] [2020-12-22 08:32:41,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:41,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:41,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:41,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:41,968 INFO L87 Difference]: Start difference. First operand 446 states and 685 transitions. Second operand 3 states. [2020-12-22 08:32:42,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:42,061 INFO L93 Difference]: Finished difference Result 1186 states and 1863 transitions. [2020-12-22 08:32:42,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:42,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 08:32:42,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:42,069 INFO L225 Difference]: With dead ends: 1186 [2020-12-22 08:32:42,069 INFO L226 Difference]: Without dead ends: 784 [2020-12-22 08:32:42,074 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 08:32:42,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-12-22 08:32:42,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 782. [2020-12-22 08:32:42,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 782 states. [2020-12-22 08:32:42,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1217 transitions. [2020-12-22 08:32:42,150 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1217 transitions. Word has length 76 [2020-12-22 08:32:42,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:42,157 INFO L481 AbstractCegarLoop]: Abstraction has 782 states and 1217 transitions. [2020-12-22 08:32:42,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:32:42,158 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1217 transitions. [2020-12-22 08:32:42,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:32:42,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:42,165 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] [2020-12-22 08:32:42,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:32:42,166 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:42,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:42,167 INFO L82 PathProgramCache]: Analyzing trace with hash -806203398, now seen corresponding path program 1 times [2020-12-22 08:32:42,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:42,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795339007] [2020-12-22 08:32:42,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:42,307 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 08:32:42,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795339007] [2020-12-22 08:32:42,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:42,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:42,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959714369] [2020-12-22 08:32:42,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:42,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:42,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:42,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:42,311 INFO L87 Difference]: Start difference. First operand 782 states and 1217 transitions. Second operand 3 states. [2020-12-22 08:32:42,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:42,409 INFO L93 Difference]: Finished difference Result 2130 states and 3355 transitions. [2020-12-22 08:32:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:42,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 08:32:42,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:42,419 INFO L225 Difference]: With dead ends: 2130 [2020-12-22 08:32:42,419 INFO L226 Difference]: Without dead ends: 1392 [2020-12-22 08:32:42,421 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 08:32:42,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2020-12-22 08:32:42,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1390. [2020-12-22 08:32:42,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1390 states. [2020-12-22 08:32:42,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 2173 transitions. [2020-12-22 08:32:42,500 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 2173 transitions. Word has length 77 [2020-12-22 08:32:42,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:42,500 INFO L481 AbstractCegarLoop]: Abstraction has 1390 states and 2173 transitions. [2020-12-22 08:32:42,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:32:42,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 2173 transitions. [2020-12-22 08:32:42,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:32:42,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:42,502 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] [2020-12-22 08:32:42,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:32:42,503 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:42,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:42,503 INFO L82 PathProgramCache]: Analyzing trace with hash -904090240, now seen corresponding path program 1 times [2020-12-22 08:32:42,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:42,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914924550] [2020-12-22 08:32:42,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:42,581 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 08:32:42,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914924550] [2020-12-22 08:32:42,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:42,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:42,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099248499] [2020-12-22 08:32:42,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:42,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:42,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:42,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:42,606 INFO L87 Difference]: Start difference. First operand 1390 states and 2173 transitions. Second operand 3 states. [2020-12-22 08:32:42,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:42,744 INFO L93 Difference]: Finished difference Result 3826 states and 6015 transitions. [2020-12-22 08:32:42,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:42,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 08:32:42,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:42,759 INFO L225 Difference]: With dead ends: 3826 [2020-12-22 08:32:42,760 INFO L226 Difference]: Without dead ends: 2480 [2020-12-22 08:32:42,763 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 08:32:42,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2020-12-22 08:32:42,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2478. [2020-12-22 08:32:42,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2478 states. [2020-12-22 08:32:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3869 transitions. [2020-12-22 08:32:42,924 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3869 transitions. Word has length 78 [2020-12-22 08:32:42,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:42,925 INFO L481 AbstractCegarLoop]: Abstraction has 2478 states and 3869 transitions. [2020-12-22 08:32:42,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:32:42,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3869 transitions. [2020-12-22 08:32:42,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 08:32:42,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:42,930 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] [2020-12-22 08:32:42,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:32:42,931 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:42,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:42,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1797609537, now seen corresponding path program 1 times [2020-12-22 08:32:42,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:42,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829692530] [2020-12-22 08:32:42,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:43,316 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 08:32:43,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829692530] [2020-12-22 08:32:43,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:43,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:32:43,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140884000] [2020-12-22 08:32:43,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:32:43,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:43,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:32:43,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:32:43,328 INFO L87 Difference]: Start difference. First operand 2478 states and 3869 transitions. Second operand 8 states. [2020-12-22 08:32:44,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:44,510 INFO L93 Difference]: Finished difference Result 15082 states and 23523 transitions. [2020-12-22 08:32:44,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:32:44,511 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-12-22 08:32:44,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:44,580 INFO L225 Difference]: With dead ends: 15082 [2020-12-22 08:32:44,581 INFO L226 Difference]: Without dead ends: 12648 [2020-12-22 08:32:44,590 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 08:32:44,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12648 states. [2020-12-22 08:32:45,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12648 to 12638. [2020-12-22 08:32:45,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12638 states. [2020-12-22 08:32:45,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12638 states to 12638 states and 19661 transitions. [2020-12-22 08:32:45,704 INFO L78 Accepts]: Start accepts. Automaton has 12638 states and 19661 transitions. Word has length 79 [2020-12-22 08:32:45,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:45,705 INFO L481 AbstractCegarLoop]: Abstraction has 12638 states and 19661 transitions. [2020-12-22 08:32:45,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:32:45,705 INFO L276 IsEmpty]: Start isEmpty. Operand 12638 states and 19661 transitions. [2020-12-22 08:32:45,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:32:45,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:45,711 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] [2020-12-22 08:32:45,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:32:45,711 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:45,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:45,718 INFO L82 PathProgramCache]: Analyzing trace with hash -252245181, now seen corresponding path program 1 times [2020-12-22 08:32:45,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:45,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976075786] [2020-12-22 08:32:45,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:45,808 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 08:32:45,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976075786] [2020-12-22 08:32:45,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:45,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:45,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400866898] [2020-12-22 08:32:45,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:45,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:45,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:45,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:45,818 INFO L87 Difference]: Start difference. First operand 12638 states and 19661 transitions. Second operand 3 states. [2020-12-22 08:32:47,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:47,246 INFO L93 Difference]: Finished difference Result 34530 states and 53583 transitions. [2020-12-22 08:32:47,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:47,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 08:32:47,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:47,332 INFO L225 Difference]: With dead ends: 34530 [2020-12-22 08:32:47,333 INFO L226 Difference]: Without dead ends: 21936 [2020-12-22 08:32:47,354 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 08:32:47,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21936 states. [2020-12-22 08:32:48,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21936 to 21934. [2020-12-22 08:32:48,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21934 states. [2020-12-22 08:32:48,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21934 states to 21934 states and 33773 transitions. [2020-12-22 08:32:48,808 INFO L78 Accepts]: Start accepts. Automaton has 21934 states and 33773 transitions. Word has length 80 [2020-12-22 08:32:48,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:48,809 INFO L481 AbstractCegarLoop]: Abstraction has 21934 states and 33773 transitions. [2020-12-22 08:32:48,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:32:48,809 INFO L276 IsEmpty]: Start isEmpty. Operand 21934 states and 33773 transitions. [2020-12-22 08:32:48,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:32:48,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:48,811 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] [2020-12-22 08:32:48,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:32:48,812 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:48,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:48,812 INFO L82 PathProgramCache]: Analyzing trace with hash -41800598, now seen corresponding path program 1 times [2020-12-22 08:32:48,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:48,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538478483] [2020-12-22 08:32:48,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:48,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:48,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538478483] [2020-12-22 08:32:48,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:48,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:32:48,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732798917] [2020-12-22 08:32:48,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:32:48,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:48,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:32:48,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:32:48,933 INFO L87 Difference]: Start difference. First operand 21934 states and 33773 transitions. Second operand 6 states. [2020-12-22 08:32:52,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:52,547 INFO L93 Difference]: Finished difference Result 83284 states and 128144 transitions. [2020-12-22 08:32:52,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:32:52,548 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-22 08:32:52,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:52,776 INFO L225 Difference]: With dead ends: 83284 [2020-12-22 08:32:52,776 INFO L226 Difference]: Without dead ends: 61394 [2020-12-22 08:32:52,832 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 08:32:53,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61394 states. [2020-12-22 08:32:56,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61394 to 61390. [2020-12-22 08:32:56,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61390 states. [2020-12-22 08:32:56,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61390 states to 61390 states and 94061 transitions. [2020-12-22 08:32:56,413 INFO L78 Accepts]: Start accepts. Automaton has 61390 states and 94061 transitions. Word has length 81 [2020-12-22 08:32:56,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:56,413 INFO L481 AbstractCegarLoop]: Abstraction has 61390 states and 94061 transitions. [2020-12-22 08:32:56,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:32:56,413 INFO L276 IsEmpty]: Start isEmpty. Operand 61390 states and 94061 transitions. [2020-12-22 08:32:56,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:32:56,415 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:56,415 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] [2020-12-22 08:32:56,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:32:56,416 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:56,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:56,416 INFO L82 PathProgramCache]: Analyzing trace with hash -198748465, now seen corresponding path program 1 times [2020-12-22 08:32:56,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:56,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016280770] [2020-12-22 08:32:56,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:56,574 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 08:32:56,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016280770] [2020-12-22 08:32:56,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:56,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:32:56,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019715286] [2020-12-22 08:32:56,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:32:56,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:56,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:32:56,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:32:56,577 INFO L87 Difference]: Start difference. First operand 61390 states and 94061 transitions. Second operand 8 states. [2020-12-22 08:33:10,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:10,588 INFO L93 Difference]: Finished difference Result 354972 states and 544660 transitions. [2020-12-22 08:33:10,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:33:10,720 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-12-22 08:33:10,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:11,493 INFO L225 Difference]: With dead ends: 354972 [2020-12-22 08:33:11,493 INFO L226 Difference]: Without dead ends: 293626 [2020-12-22 08:33:11,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:33:11,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293626 states. [2020-12-22 08:33:21,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293626 to 122734. [2020-12-22 08:33:21,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122734 states. [2020-12-22 08:33:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122734 states to 122734 states and 185901 transitions. [2020-12-22 08:33:21,975 INFO L78 Accepts]: Start accepts. Automaton has 122734 states and 185901 transitions. Word has length 81 [2020-12-22 08:33:21,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:21,975 INFO L481 AbstractCegarLoop]: Abstraction has 122734 states and 185901 transitions. [2020-12-22 08:33:21,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:33:21,976 INFO L276 IsEmpty]: Start isEmpty. Operand 122734 states and 185901 transitions. [2020-12-22 08:33:21,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:33:21,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:21,977 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] [2020-12-22 08:33:21,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:33:21,978 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:21,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:21,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1885691313, now seen corresponding path program 1 times [2020-12-22 08:33:21,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:21,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138735834] [2020-12-22 08:33:21,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:22,076 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 08:33:22,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138735834] [2020-12-22 08:33:22,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:22,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:33:22,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85823588] [2020-12-22 08:33:22,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:33:22,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:22,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:33:22,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:33:22,078 INFO L87 Difference]: Start difference. First operand 122734 states and 185901 transitions. Second operand 5 states. [2020-12-22 08:33:37,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:37,077 INFO L93 Difference]: Finished difference Result 249776 states and 376110 transitions. [2020-12-22 08:33:37,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:33:37,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-12-22 08:33:37,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:37,895 INFO L225 Difference]: With dead ends: 249776 [2020-12-22 08:33:37,895 INFO L226 Difference]: Without dead ends: 249774 [2020-12-22 08:33:37,991 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 08:33:38,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249774 states. [2020-12-22 08:33:48,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249774 to 127086. [2020-12-22 08:33:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127086 states. [2020-12-22 08:33:49,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127086 states to 127086 states and 190253 transitions. [2020-12-22 08:33:49,050 INFO L78 Accepts]: Start accepts. Automaton has 127086 states and 190253 transitions. Word has length 82 [2020-12-22 08:33:49,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:49,059 INFO L481 AbstractCegarLoop]: Abstraction has 127086 states and 190253 transitions. [2020-12-22 08:33:49,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:33:49,059 INFO L276 IsEmpty]: Start isEmpty. Operand 127086 states and 190253 transitions. [2020-12-22 08:33:49,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:33:49,061 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:49,061 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] [2020-12-22 08:33:49,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:33:49,062 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:49,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:49,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1683684575, now seen corresponding path program 1 times [2020-12-22 08:33:49,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:49,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787817952] [2020-12-22 08:33:49,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:49,163 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 08:33:49,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787817952] [2020-12-22 08:33:49,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:49,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:33:49,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108315690] [2020-12-22 08:33:49,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:33:49,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:49,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:33:49,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:49,167 INFO L87 Difference]: Start difference. First operand 127086 states and 190253 transitions. Second operand 3 states. [2020-12-22 08:33:59,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:59,471 INFO L93 Difference]: Finished difference Result 275732 states and 412321 transitions. [2020-12-22 08:33:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:33:59,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 08:33:59,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:59,895 INFO L225 Difference]: With dead ends: 275732 [2020-12-22 08:33:59,896 INFO L226 Difference]: Without dead ends: 148690 [2020-12-22 08:34:00,009 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 08:34:00,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148690 states. [2020-12-22 08:34:10,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148690 to 148336. [2020-12-22 08:34:10,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148336 states. [2020-12-22 08:34:11,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148336 states to 148336 states and 221055 transitions. [2020-12-22 08:34:11,332 INFO L78 Accepts]: Start accepts. Automaton has 148336 states and 221055 transitions. Word has length 83 [2020-12-22 08:34:11,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:11,332 INFO L481 AbstractCegarLoop]: Abstraction has 148336 states and 221055 transitions. [2020-12-22 08:34:11,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:34:11,332 INFO L276 IsEmpty]: Start isEmpty. Operand 148336 states and 221055 transitions. [2020-12-22 08:34:11,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 08:34:11,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:11,389 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:34:11,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:34:11,390 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:11,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:11,390 INFO L82 PathProgramCache]: Analyzing trace with hash 967908386, now seen corresponding path program 1 times [2020-12-22 08:34:11,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:11,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850308358] [2020-12-22 08:34:11,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:12,066 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:12,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850308358] [2020-12-22 08:34:12,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762344276] [2020-12-22 08:34:12,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:34:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:12,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 08:34:12,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:34:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:34:12,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:34:12,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-22 08:34:12,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848370244] [2020-12-22 08:34:12,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:34:12,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:12,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:34:12,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:34:12,844 INFO L87 Difference]: Start difference. First operand 148336 states and 221055 transitions. Second operand 12 states. [2020-12-22 08:34:14,760 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2020-12-22 08:36:29,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:29,244 INFO L93 Difference]: Finished difference Result 1539580 states and 2276629 transitions. [2020-12-22 08:36:29,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-12-22 08:36:29,244 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 114 [2020-12-22 08:36:29,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:32,804 INFO L225 Difference]: With dead ends: 1539580 [2020-12-22 08:36:32,804 INFO L226 Difference]: Without dead ends: 1391290