/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/product-lines/elevator_spec1_product01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:58:20,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:58:20,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:58:20,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:58:20,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:58:20,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:58:20,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:58:20,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:58:20,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:58:20,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:58:20,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:58:20,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:58:20,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:58:20,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:58:20,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:58:20,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:58:20,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:58:20,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:58:20,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:58:20,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:58:20,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:58:20,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:58:20,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:58:20,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:58:20,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:58:20,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:58:20,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:58:20,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:58:20,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:58:20,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:58:20,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:58:20,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:58:20,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:58:20,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:58:20,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:58:20,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:58:20,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:58:20,706 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:58:20,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:58:20,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:58:20,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:58:20,709 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:58:20,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:58:20,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:58:20,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:58:20,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:58:20,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:58:20,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:58:20,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:58:20,710 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:58:20,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:58:20,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:58:20,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:58:20,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:58:20,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:58:20,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:58:20,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:58:20,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:58:20,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:58:20,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:58:20,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:58:20,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:58:20,713 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:58:21,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:58:21,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:58:21,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:58:21,205 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:58:21,206 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:58:21,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c [2020-12-22 05:58:21,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d50db6836/e8e7080559474cfa91eb3b60440551fd/FLAG8ddc0ca28 [2020-12-22 05:58:22,265 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:58:22,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c [2020-12-22 05:58:22,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d50db6836/e8e7080559474cfa91eb3b60440551fd/FLAG8ddc0ca28 [2020-12-22 05:58:22,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d50db6836/e8e7080559474cfa91eb3b60440551fd [2020-12-22 05:58:22,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:58:22,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:58:22,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:58:22,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:58:22,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:58:22,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:58:22" (1/1) ... [2020-12-22 05:58:22,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f9487b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:22, skipping insertion in model container [2020-12-22 05:58:22,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:58:22" (1/1) ... [2020-12-22 05:58:22,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:58:22,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:58:22,760 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/product-lines/elevator_spec1_product01.cil.c[1221,1234] [2020-12-22 05:58:23,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:58:23,374 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:58:23,433 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/product-lines/elevator_spec1_product01.cil.c[1221,1234] [2020-12-22 05:58:23,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:58:23,682 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:58:23,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:23 WrapperNode [2020-12-22 05:58:23,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:58:23,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:58:23,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:58:23,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:58:23,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:23" (1/1) ... [2020-12-22 05:58:23,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:23" (1/1) ... [2020-12-22 05:58:23,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:58:23,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:58:23,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:58:23,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:58:23,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:23" (1/1) ... [2020-12-22 05:58:23,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:23" (1/1) ... [2020-12-22 05:58:24,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:23" (1/1) ... [2020-12-22 05:58:24,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:23" (1/1) ... [2020-12-22 05:58:24,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:23" (1/1) ... [2020-12-22 05:58:24,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:23" (1/1) ... [2020-12-22 05:58:24,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:23" (1/1) ... [2020-12-22 05:58:24,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:58:24,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:58:24,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:58:24,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:58:24,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:23" (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 05:58:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:58:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:58:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:58:24,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:58:30,704 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:58:30,704 INFO L299 CfgBuilder]: Removed 445 assume(true) statements. [2020-12-22 05:58:30,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:58:30 BoogieIcfgContainer [2020-12-22 05:58:30,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:58:30,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:58:30,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:58:30,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:58:30,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:58:22" (1/3) ... [2020-12-22 05:58:30,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583a79ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:58:30, skipping insertion in model container [2020-12-22 05:58:30,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:23" (2/3) ... [2020-12-22 05:58:30,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583a79ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:58:30, skipping insertion in model container [2020-12-22 05:58:30,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:58:30" (3/3) ... [2020-12-22 05:58:30,720 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product01.cil.c [2020-12-22 05:58:30,727 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:58:30,735 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:58:30,754 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:58:30,797 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:58:30,798 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:58:30,798 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:58:30,798 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:58:30,800 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:58:30,800 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:58:30,800 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:58:30,800 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:58:30,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states. [2020-12-22 05:58:30,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 05:58:30,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:30,870 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] [2020-12-22 05:58:30,871 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:30,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:30,878 INFO L82 PathProgramCache]: Analyzing trace with hash -560062675, now seen corresponding path program 1 times [2020-12-22 05:58:30,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:30,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908842202] [2020-12-22 05:58:30,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:31,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908842202] [2020-12-22 05:58:31,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:31,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:31,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972280404] [2020-12-22 05:58:31,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:58:31,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:31,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:58:31,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:31,367 INFO L87 Difference]: Start difference. First operand 2211 states. Second operand 3 states. [2020-12-22 05:58:31,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:31,788 INFO L93 Difference]: Finished difference Result 6553 states and 12467 transitions. [2020-12-22 05:58:31,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:58:31,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-12-22 05:58:31,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:31,867 INFO L225 Difference]: With dead ends: 6553 [2020-12-22 05:58:31,867 INFO L226 Difference]: Without dead ends: 4347 [2020-12-22 05:58:31,883 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 05:58:31,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2020-12-22 05:58:32,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 2207. [2020-12-22 05:58:32,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2207 states. [2020-12-22 05:58:32,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 4186 transitions. [2020-12-22 05:58:32,073 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 4186 transitions. Word has length 47 [2020-12-22 05:58:32,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:32,074 INFO L481 AbstractCegarLoop]: Abstraction has 2207 states and 4186 transitions. [2020-12-22 05:58:32,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:58:32,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 4186 transitions. [2020-12-22 05:58:32,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 05:58:32,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:32,079 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] [2020-12-22 05:58:32,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:58:32,081 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:32,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:32,082 INFO L82 PathProgramCache]: Analyzing trace with hash -823582041, now seen corresponding path program 1 times [2020-12-22 05:58:32,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:32,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716085680] [2020-12-22 05:58:32,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:32,325 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 05:58:32,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716085680] [2020-12-22 05:58:32,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:32,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:58:32,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328979815] [2020-12-22 05:58:32,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:58:32,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:32,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:58:32,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:58:32,330 INFO L87 Difference]: Start difference. First operand 2207 states and 4186 transitions. Second operand 6 states. [2020-12-22 05:58:33,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:33,045 INFO L93 Difference]: Finished difference Result 8603 states and 16341 transitions. [2020-12-22 05:58:33,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:58:33,046 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-12-22 05:58:33,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:33,212 INFO L225 Difference]: With dead ends: 8603 [2020-12-22 05:58:33,213 INFO L226 Difference]: Without dead ends: 6439 [2020-12-22 05:58:33,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:58:33,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6439 states. [2020-12-22 05:58:33,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6439 to 2203. [2020-12-22 05:58:33,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2203 states. [2020-12-22 05:58:33,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 4175 transitions. [2020-12-22 05:58:33,374 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 4175 transitions. Word has length 54 [2020-12-22 05:58:33,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:33,375 INFO L481 AbstractCegarLoop]: Abstraction has 2203 states and 4175 transitions. [2020-12-22 05:58:33,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:58:33,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 4175 transitions. [2020-12-22 05:58:33,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 05:58:33,383 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:33,383 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] [2020-12-22 05:58:33,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:58:33,384 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:33,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:33,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1232259066, now seen corresponding path program 1 times [2020-12-22 05:58:33,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:33,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379007365] [2020-12-22 05:58:33,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:33,537 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 05:58:33,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379007365] [2020-12-22 05:58:33,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:33,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:33,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427509236] [2020-12-22 05:58:33,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:33,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:33,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:33,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:33,543 INFO L87 Difference]: Start difference. First operand 2203 states and 4175 transitions. Second operand 4 states. [2020-12-22 05:58:34,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:34,257 INFO L93 Difference]: Finished difference Result 6497 states and 12334 transitions. [2020-12-22 05:58:34,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:34,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-12-22 05:58:34,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:34,290 INFO L225 Difference]: With dead ends: 6497 [2020-12-22 05:58:34,290 INFO L226 Difference]: Without dead ends: 4337 [2020-12-22 05:58:34,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:34,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4337 states. [2020-12-22 05:58:34,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4337 to 2203. [2020-12-22 05:58:34,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2203 states. [2020-12-22 05:58:34,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 4166 transitions. [2020-12-22 05:58:34,429 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 4166 transitions. Word has length 56 [2020-12-22 05:58:34,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:34,437 INFO L481 AbstractCegarLoop]: Abstraction has 2203 states and 4166 transitions. [2020-12-22 05:58:34,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:34,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 4166 transitions. [2020-12-22 05:58:34,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 05:58:34,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:34,440 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] [2020-12-22 05:58:34,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:58:34,440 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:34,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:34,441 INFO L82 PathProgramCache]: Analyzing trace with hash -221626611, now seen corresponding path program 1 times [2020-12-22 05:58:34,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:34,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526012228] [2020-12-22 05:58:34,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:34,636 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 05:58:34,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526012228] [2020-12-22 05:58:34,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:34,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:34,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556360266] [2020-12-22 05:58:34,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:34,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:34,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:34,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:34,640 INFO L87 Difference]: Start difference. First operand 2203 states and 4166 transitions. Second operand 4 states. [2020-12-22 05:58:35,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:35,224 INFO L93 Difference]: Finished difference Result 6497 states and 12316 transitions. [2020-12-22 05:58:35,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:35,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-12-22 05:58:35,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:35,253 INFO L225 Difference]: With dead ends: 6497 [2020-12-22 05:58:35,254 INFO L226 Difference]: Without dead ends: 4337 [2020-12-22 05:58:35,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:35,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4337 states. [2020-12-22 05:58:35,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4337 to 2203. [2020-12-22 05:58:35,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2203 states. [2020-12-22 05:58:35,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 4157 transitions. [2020-12-22 05:58:35,407 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 4157 transitions. Word has length 58 [2020-12-22 05:58:35,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:35,410 INFO L481 AbstractCegarLoop]: Abstraction has 2203 states and 4157 transitions. [2020-12-22 05:58:35,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 4157 transitions. [2020-12-22 05:58:35,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 05:58:35,414 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:35,414 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] [2020-12-22 05:58:35,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:58:35,414 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:35,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:35,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1033744390, now seen corresponding path program 1 times [2020-12-22 05:58:35,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:35,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376708799] [2020-12-22 05:58:35,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:35,527 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 05:58:35,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376708799] [2020-12-22 05:58:35,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:35,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:35,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519510388] [2020-12-22 05:58:35,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:35,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:35,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:35,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:35,532 INFO L87 Difference]: Start difference. First operand 2203 states and 4157 transitions. Second operand 4 states. [2020-12-22 05:58:36,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:36,214 INFO L93 Difference]: Finished difference Result 10705 states and 20292 transitions. [2020-12-22 05:58:36,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:36,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 05:58:36,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:36,275 INFO L225 Difference]: With dead ends: 10705 [2020-12-22 05:58:36,275 INFO L226 Difference]: Without dead ends: 8545 [2020-12-22 05:58:36,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:36,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8545 states. [2020-12-22 05:58:36,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8545 to 2203. [2020-12-22 05:58:36,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2203 states. [2020-12-22 05:58:36,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 4153 transitions. [2020-12-22 05:58:36,454 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 4153 transitions. Word has length 60 [2020-12-22 05:58:36,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:36,454 INFO L481 AbstractCegarLoop]: Abstraction has 2203 states and 4153 transitions. [2020-12-22 05:58:36,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:36,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 4153 transitions. [2020-12-22 05:58:36,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 05:58:36,457 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:36,457 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] [2020-12-22 05:58:36,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 05:58:36,458 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:36,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:36,459 INFO L82 PathProgramCache]: Analyzing trace with hash 840459130, now seen corresponding path program 1 times [2020-12-22 05:58:36,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:36,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497278658] [2020-12-22 05:58:36,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:36,566 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 05:58:36,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497278658] [2020-12-22 05:58:36,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:36,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:36,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213559373] [2020-12-22 05:58:36,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:36,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:36,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:36,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:36,569 INFO L87 Difference]: Start difference. First operand 2203 states and 4153 transitions. Second operand 4 states. [2020-12-22 05:58:37,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:37,030 INFO L93 Difference]: Finished difference Result 8580 states and 16255 transitions. [2020-12-22 05:58:37,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:37,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 05:58:37,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:37,051 INFO L225 Difference]: With dead ends: 8580 [2020-12-22 05:58:37,051 INFO L226 Difference]: Without dead ends: 6399 [2020-12-22 05:58:37,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:37,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6399 states. [2020-12-22 05:58:37,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6399 to 2185. [2020-12-22 05:58:37,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2185 states. [2020-12-22 05:58:37,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 4122 transitions. [2020-12-22 05:58:37,213 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 4122 transitions. Word has length 60 [2020-12-22 05:58:37,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:37,213 INFO L481 AbstractCegarLoop]: Abstraction has 2185 states and 4122 transitions. [2020-12-22 05:58:37,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:37,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 4122 transitions. [2020-12-22 05:58:37,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 05:58:37,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:37,216 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] [2020-12-22 05:58:37,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:58:37,216 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:37,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:37,223 INFO L82 PathProgramCache]: Analyzing trace with hash -128980043, now seen corresponding path program 1 times [2020-12-22 05:58:37,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:37,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902525061] [2020-12-22 05:58:37,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:37,316 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 05:58:37,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902525061] [2020-12-22 05:58:37,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:37,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:37,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220750480] [2020-12-22 05:58:37,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:37,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:37,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:37,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:37,319 INFO L87 Difference]: Start difference. First operand 2185 states and 4122 transitions. Second operand 4 states. [2020-12-22 05:58:37,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:37,746 INFO L93 Difference]: Finished difference Result 6461 states and 12229 transitions. [2020-12-22 05:58:37,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:37,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 05:58:37,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:37,759 INFO L225 Difference]: With dead ends: 6461 [2020-12-22 05:58:37,760 INFO L226 Difference]: Without dead ends: 4298 [2020-12-22 05:58:37,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:37,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4298 states. [2020-12-22 05:58:37,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4298 to 2185. [2020-12-22 05:58:37,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2185 states. [2020-12-22 05:58:37,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 4116 transitions. [2020-12-22 05:58:37,905 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 4116 transitions. Word has length 61 [2020-12-22 05:58:37,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:37,905 INFO L481 AbstractCegarLoop]: Abstraction has 2185 states and 4116 transitions. [2020-12-22 05:58:37,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:37,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 4116 transitions. [2020-12-22 05:58:37,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 05:58:37,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:37,908 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] [2020-12-22 05:58:37,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 05:58:37,909 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:37,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:37,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1525690123, now seen corresponding path program 1 times [2020-12-22 05:58:37,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:37,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541730914] [2020-12-22 05:58:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:38,012 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 05:58:38,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541730914] [2020-12-22 05:58:38,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:38,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:38,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150314122] [2020-12-22 05:58:38,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:38,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:38,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:38,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:38,015 INFO L87 Difference]: Start difference. First operand 2185 states and 4116 transitions. Second operand 4 states. [2020-12-22 05:58:38,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:38,551 INFO L93 Difference]: Finished difference Result 6461 states and 12217 transitions. [2020-12-22 05:58:38,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:38,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 05:58:38,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:38,569 INFO L225 Difference]: With dead ends: 6461 [2020-12-22 05:58:38,569 INFO L226 Difference]: Without dead ends: 4298 [2020-12-22 05:58:38,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:38,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4298 states. [2020-12-22 05:58:38,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4298 to 2185. [2020-12-22 05:58:38,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2185 states. [2020-12-22 05:58:38,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 4110 transitions. [2020-12-22 05:58:38,760 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 4110 transitions. Word has length 62 [2020-12-22 05:58:38,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:38,762 INFO L481 AbstractCegarLoop]: Abstraction has 2185 states and 4110 transitions. [2020-12-22 05:58:38,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:38,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 4110 transitions. [2020-12-22 05:58:38,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 05:58:38,765 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:38,766 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] [2020-12-22 05:58:38,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 05:58:38,766 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:38,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:38,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1253663408, now seen corresponding path program 1 times [2020-12-22 05:58:38,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:38,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977282677] [2020-12-22 05:58:38,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:38,881 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 05:58:38,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977282677] [2020-12-22 05:58:38,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:38,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:58:38,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446840505] [2020-12-22 05:58:38,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:58:38,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:38,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:58:38,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:58:38,890 INFO L87 Difference]: Start difference. First operand 2185 states and 4110 transitions. Second operand 7 states. [2020-12-22 05:58:39,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:39,815 INFO L93 Difference]: Finished difference Result 10676 states and 20206 transitions. [2020-12-22 05:58:39,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:58:39,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-12-22 05:58:39,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:39,843 INFO L225 Difference]: With dead ends: 10676 [2020-12-22 05:58:39,843 INFO L226 Difference]: Without dead ends: 8519 [2020-12-22 05:58:39,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:58:39,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8519 states. [2020-12-22 05:58:40,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8519 to 2187. [2020-12-22 05:58:40,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2187 states. [2020-12-22 05:58:40,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 4111 transitions. [2020-12-22 05:58:40,113 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 4111 transitions. Word has length 63 [2020-12-22 05:58:40,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:40,113 INFO L481 AbstractCegarLoop]: Abstraction has 2187 states and 4111 transitions. [2020-12-22 05:58:40,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:58:40,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 4111 transitions. [2020-12-22 05:58:40,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 05:58:40,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:40,115 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] [2020-12-22 05:58:40,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 05:58:40,115 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:40,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:40,116 INFO L82 PathProgramCache]: Analyzing trace with hash 273678923, now seen corresponding path program 1 times [2020-12-22 05:58:40,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:40,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613851604] [2020-12-22 05:58:40,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:40,227 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 05:58:40,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613851604] [2020-12-22 05:58:40,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:40,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:58:40,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793661190] [2020-12-22 05:58:40,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:58:40,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:40,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:58:40,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:58:40,230 INFO L87 Difference]: Start difference. First operand 2187 states and 4111 transitions. Second operand 7 states. [2020-12-22 05:58:41,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:41,060 INFO L93 Difference]: Finished difference Result 10668 states and 20185 transitions. [2020-12-22 05:58:41,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:58:41,061 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-12-22 05:58:41,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:41,090 INFO L225 Difference]: With dead ends: 10668 [2020-12-22 05:58:41,091 INFO L226 Difference]: Without dead ends: 8514 [2020-12-22 05:58:41,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:58:41,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8514 states. [2020-12-22 05:58:41,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8514 to 2192. [2020-12-22 05:58:41,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2192 states. [2020-12-22 05:58:41,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2192 states to 2192 states and 4119 transitions. [2020-12-22 05:58:41,287 INFO L78 Accepts]: Start accepts. Automaton has 2192 states and 4119 transitions. Word has length 65 [2020-12-22 05:58:41,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:41,287 INFO L481 AbstractCegarLoop]: Abstraction has 2192 states and 4119 transitions. [2020-12-22 05:58:41,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:58:41,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2192 states and 4119 transitions. [2020-12-22 05:58:41,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 05:58:41,290 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:41,290 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] [2020-12-22 05:58:41,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 05:58:41,291 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:41,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:41,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1483989296, now seen corresponding path program 1 times [2020-12-22 05:58:41,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:41,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659930039] [2020-12-22 05:58:41,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:41,364 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 05:58:41,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659930039] [2020-12-22 05:58:41,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:41,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:41,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118241824] [2020-12-22 05:58:41,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:58:41,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:41,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:58:41,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:41,368 INFO L87 Difference]: Start difference. First operand 2192 states and 4119 transitions. Second operand 3 states. [2020-12-22 05:58:41,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:41,516 INFO L93 Difference]: Finished difference Result 4326 states and 8156 transitions. [2020-12-22 05:58:41,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:58:41,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 05:58:41,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:41,525 INFO L225 Difference]: With dead ends: 4326 [2020-12-22 05:58:41,525 INFO L226 Difference]: Without dead ends: 2171 [2020-12-22 05:58:41,530 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 05:58:41,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2020-12-22 05:58:41,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 2171. [2020-12-22 05:58:41,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2171 states. [2020-12-22 05:58:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 4083 transitions. [2020-12-22 05:58:41,691 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 4083 transitions. Word has length 67 [2020-12-22 05:58:41,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:41,691 INFO L481 AbstractCegarLoop]: Abstraction has 2171 states and 4083 transitions. [2020-12-22 05:58:41,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:58:41,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 4083 transitions. [2020-12-22 05:58:41,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 05:58:41,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:41,694 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] [2020-12-22 05:58:41,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 05:58:41,694 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:41,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:41,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1912972619, now seen corresponding path program 1 times [2020-12-22 05:58:41,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:41,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854519203] [2020-12-22 05:58:41,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:41,784 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 05:58:41,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854519203] [2020-12-22 05:58:41,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:41,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:58:41,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577154730] [2020-12-22 05:58:41,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:58:41,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:41,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:58:41,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:41,787 INFO L87 Difference]: Start difference. First operand 2171 states and 4083 transitions. Second operand 5 states. [2020-12-22 05:58:41,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:41,987 INFO L93 Difference]: Finished difference Result 4275 states and 8078 transitions. [2020-12-22 05:58:41,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:41,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-22 05:58:41,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:41,996 INFO L225 Difference]: With dead ends: 4275 [2020-12-22 05:58:41,997 INFO L226 Difference]: Without dead ends: 2165 [2020-12-22 05:58:42,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:58:42,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2020-12-22 05:58:42,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2165. [2020-12-22 05:58:42,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2165 states. [2020-12-22 05:58:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2165 states to 2165 states and 4074 transitions. [2020-12-22 05:58:42,140 INFO L78 Accepts]: Start accepts. Automaton has 2165 states and 4074 transitions. Word has length 69 [2020-12-22 05:58:42,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:42,141 INFO L481 AbstractCegarLoop]: Abstraction has 2165 states and 4074 transitions. [2020-12-22 05:58:42,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:58:42,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2165 states and 4074 transitions. [2020-12-22 05:58:42,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 05:58:42,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:42,143 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] [2020-12-22 05:58:42,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 05:58:42,144 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:42,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:42,144 INFO L82 PathProgramCache]: Analyzing trace with hash -621258955, now seen corresponding path program 1 times [2020-12-22 05:58:42,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:42,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414310856] [2020-12-22 05:58:42,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:42,228 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 05:58:42,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414310856] [2020-12-22 05:58:42,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:42,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:42,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992103846] [2020-12-22 05:58:42,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:42,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:42,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:42,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:42,231 INFO L87 Difference]: Start difference. First operand 2165 states and 4074 transitions. Second operand 4 states. [2020-12-22 05:58:42,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:42,397 INFO L93 Difference]: Finished difference Result 4269 states and 8069 transitions. [2020-12-22 05:58:42,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:58:42,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-12-22 05:58:42,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:42,404 INFO L225 Difference]: With dead ends: 4269 [2020-12-22 05:58:42,404 INFO L226 Difference]: Without dead ends: 2151 [2020-12-22 05:58:42,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:42,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2020-12-22 05:58:42,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 2151. [2020-12-22 05:58:42,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2151 states. [2020-12-22 05:58:42,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 4053 transitions. [2020-12-22 05:58:42,542 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 4053 transitions. Word has length 69 [2020-12-22 05:58:42,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:42,544 INFO L481 AbstractCegarLoop]: Abstraction has 2151 states and 4053 transitions. [2020-12-22 05:58:42,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 4053 transitions. [2020-12-22 05:58:42,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 05:58:42,550 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:42,550 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] [2020-12-22 05:58:42,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 05:58:42,550 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:42,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:42,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1645173598, now seen corresponding path program 1 times [2020-12-22 05:58:42,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:42,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845179072] [2020-12-22 05:58:42,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:42,676 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 05:58:42,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845179072] [2020-12-22 05:58:42,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:42,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:58:42,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536920113] [2020-12-22 05:58:42,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:58:42,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:42,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:58:42,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:58:42,679 INFO L87 Difference]: Start difference. First operand 2151 states and 4053 transitions. Second operand 6 states. [2020-12-22 05:58:42,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:42,949 INFO L93 Difference]: Finished difference Result 4269 states and 8064 transitions. [2020-12-22 05:58:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:58:42,950 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-12-22 05:58:42,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:42,956 INFO L225 Difference]: With dead ends: 4269 [2020-12-22 05:58:42,956 INFO L226 Difference]: Without dead ends: 2171 [2020-12-22 05:58:42,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:58:42,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2020-12-22 05:58:43,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 2151. [2020-12-22 05:58:43,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2151 states. [2020-12-22 05:58:43,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 4052 transitions. [2020-12-22 05:58:43,110 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 4052 transitions. Word has length 70 [2020-12-22 05:58:43,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:43,110 INFO L481 AbstractCegarLoop]: Abstraction has 2151 states and 4052 transitions. [2020-12-22 05:58:43,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:58:43,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 4052 transitions. [2020-12-22 05:58:43,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 05:58:43,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:43,112 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] [2020-12-22 05:58:43,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 05:58:43,113 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:43,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:43,113 INFO L82 PathProgramCache]: Analyzing trace with hash -449475602, now seen corresponding path program 1 times [2020-12-22 05:58:43,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:43,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181872235] [2020-12-22 05:58:43,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:43,195 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 05:58:43,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181872235] [2020-12-22 05:58:43,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:43,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:58:43,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518146682] [2020-12-22 05:58:43,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:58:43,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:43,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:58:43,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:58:43,198 INFO L87 Difference]: Start difference. First operand 2151 states and 4052 transitions. Second operand 6 states. [2020-12-22 05:58:43,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:43,487 INFO L93 Difference]: Finished difference Result 4259 states and 8045 transitions. [2020-12-22 05:58:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:58:43,487 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-12-22 05:58:43,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:43,494 INFO L225 Difference]: With dead ends: 4259 [2020-12-22 05:58:43,495 INFO L226 Difference]: Without dead ends: 2166 [2020-12-22 05:58:43,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:58:43,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2020-12-22 05:58:43,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 2151. [2020-12-22 05:58:43,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2151 states. [2020-12-22 05:58:43,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 4051 transitions. [2020-12-22 05:58:43,638 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 4051 transitions. Word has length 71 [2020-12-22 05:58:43,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:43,638 INFO L481 AbstractCegarLoop]: Abstraction has 2151 states and 4051 transitions. [2020-12-22 05:58:43,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:58:43,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 4051 transitions. [2020-12-22 05:58:43,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 05:58:43,640 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:43,641 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] [2020-12-22 05:58:43,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 05:58:43,641 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:43,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:43,642 INFO L82 PathProgramCache]: Analyzing trace with hash -332311091, now seen corresponding path program 1 times [2020-12-22 05:58:43,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:43,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639344873] [2020-12-22 05:58:43,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:43,754 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 05:58:43,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639344873] [2020-12-22 05:58:43,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:43,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:43,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745877284] [2020-12-22 05:58:43,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:58:43,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:43,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:58:43,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:43,762 INFO L87 Difference]: Start difference. First operand 2151 states and 4051 transitions. Second operand 5 states. [2020-12-22 05:58:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:45,892 INFO L93 Difference]: Finished difference Result 8561 states and 16151 transitions. [2020-12-22 05:58:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:58:45,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-12-22 05:58:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:45,911 INFO L225 Difference]: With dead ends: 8561 [2020-12-22 05:58:45,912 INFO L226 Difference]: Without dead ends: 6483 [2020-12-22 05:58:45,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:58:45,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6483 states. [2020-12-22 05:58:46,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6483 to 2155. [2020-12-22 05:58:46,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2155 states. [2020-12-22 05:58:46,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 4055 transitions. [2020-12-22 05:58:46,087 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 4055 transitions. Word has length 72 [2020-12-22 05:58:46,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:46,087 INFO L481 AbstractCegarLoop]: Abstraction has 2155 states and 4055 transitions. [2020-12-22 05:58:46,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:58:46,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 4055 transitions. [2020-12-22 05:58:46,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 05:58:46,094 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:46,094 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] [2020-12-22 05:58:46,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 05:58:46,095 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:46,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:46,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1748734085, now seen corresponding path program 1 times [2020-12-22 05:58:46,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:46,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591994625] [2020-12-22 05:58:46,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:46,175 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 05:58:46,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591994625] [2020-12-22 05:58:46,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:46,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:46,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053621286] [2020-12-22 05:58:46,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:46,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:46,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:46,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:46,178 INFO L87 Difference]: Start difference. First operand 2155 states and 4055 transitions. Second operand 4 states. [2020-12-22 05:58:47,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:47,780 INFO L93 Difference]: Finished difference Result 6193 states and 11640 transitions. [2020-12-22 05:58:47,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:47,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-12-22 05:58:47,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:47,808 INFO L225 Difference]: With dead ends: 6193 [2020-12-22 05:58:47,808 INFO L226 Difference]: Without dead ends: 4098 [2020-12-22 05:58:47,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:47,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2020-12-22 05:58:47,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 2918. [2020-12-22 05:58:47,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2918 states. [2020-12-22 05:58:48,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2918 states to 2918 states and 5440 transitions. [2020-12-22 05:58:48,006 INFO L78 Accepts]: Start accepts. Automaton has 2918 states and 5440 transitions. Word has length 73 [2020-12-22 05:58:48,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:48,006 INFO L481 AbstractCegarLoop]: Abstraction has 2918 states and 5440 transitions. [2020-12-22 05:58:48,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:48,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2918 states and 5440 transitions. [2020-12-22 05:58:48,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 05:58:48,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:48,009 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 05:58:48,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 05:58:48,009 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:48,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:48,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1109939939, now seen corresponding path program 1 times [2020-12-22 05:58:48,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:48,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688356282] [2020-12-22 05:58:48,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:48,108 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 05:58:48,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688356282] [2020-12-22 05:58:48,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:48,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:48,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716057958] [2020-12-22 05:58:48,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:58:48,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:48,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:58:48,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:48,113 INFO L87 Difference]: Start difference. First operand 2918 states and 5440 transitions. Second operand 5 states. [2020-12-22 05:58:49,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:49,220 INFO L93 Difference]: Finished difference Result 20919 states and 39289 transitions. [2020-12-22 05:58:49,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:58:49,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-22 05:58:49,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:49,277 INFO L225 Difference]: With dead ends: 20919 [2020-12-22 05:58:49,277 INFO L226 Difference]: Without dead ends: 18070 [2020-12-22 05:58:49,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:58:49,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18070 states. [2020-12-22 05:58:49,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18070 to 5357. [2020-12-22 05:58:49,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5357 states. [2020-12-22 05:58:49,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5357 states to 5357 states and 10040 transitions. [2020-12-22 05:58:49,727 INFO L78 Accepts]: Start accepts. Automaton has 5357 states and 10040 transitions. Word has length 75 [2020-12-22 05:58:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:49,727 INFO L481 AbstractCegarLoop]: Abstraction has 5357 states and 10040 transitions. [2020-12-22 05:58:49,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:58:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 5357 states and 10040 transitions. [2020-12-22 05:58:49,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 05:58:49,729 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:49,729 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 05:58:49,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 05:58:49,730 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:49,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:49,730 INFO L82 PathProgramCache]: Analyzing trace with hash 975926433, now seen corresponding path program 1 times [2020-12-22 05:58:49,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:49,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763119325] [2020-12-22 05:58:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:49,804 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 05:58:49,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763119325] [2020-12-22 05:58:49,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:49,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:49,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366150038] [2020-12-22 05:58:49,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:49,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:49,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:49,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:49,806 INFO L87 Difference]: Start difference. First operand 5357 states and 10040 transitions. Second operand 4 states. [2020-12-22 05:58:50,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:50,706 INFO L93 Difference]: Finished difference Result 13048 states and 24448 transitions. [2020-12-22 05:58:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:50,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-22 05:58:50,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:50,731 INFO L225 Difference]: With dead ends: 13048 [2020-12-22 05:58:50,731 INFO L226 Difference]: Without dead ends: 10732 [2020-12-22 05:58:50,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:50,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10732 states. [2020-12-22 05:58:51,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10732 to 7422. [2020-12-22 05:58:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7422 states. [2020-12-22 05:58:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7422 states to 7422 states and 13907 transitions. [2020-12-22 05:58:51,257 INFO L78 Accepts]: Start accepts. Automaton has 7422 states and 13907 transitions. Word has length 75 [2020-12-22 05:58:51,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:51,257 INFO L481 AbstractCegarLoop]: Abstraction has 7422 states and 13907 transitions. [2020-12-22 05:58:51,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:51,257 INFO L276 IsEmpty]: Start isEmpty. Operand 7422 states and 13907 transitions. [2020-12-22 05:58:51,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 05:58:51,260 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:51,260 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 05:58:51,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 05:58:51,260 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:51,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:51,261 INFO L82 PathProgramCache]: Analyzing trace with hash -431085397, now seen corresponding path program 1 times [2020-12-22 05:58:51,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:51,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094161595] [2020-12-22 05:58:51,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:51,325 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 05:58:51,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094161595] [2020-12-22 05:58:51,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:51,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:51,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135904627] [2020-12-22 05:58:51,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:51,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:51,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:51,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:51,328 INFO L87 Difference]: Start difference. First operand 7422 states and 13907 transitions. Second operand 4 states. [2020-12-22 05:58:52,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:52,267 INFO L93 Difference]: Finished difference Result 15368 states and 28699 transitions. [2020-12-22 05:58:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:52,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-12-22 05:58:52,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:52,297 INFO L225 Difference]: With dead ends: 15368 [2020-12-22 05:58:52,298 INFO L226 Difference]: Without dead ends: 11176 [2020-12-22 05:58:52,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:52,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11176 states. [2020-12-22 05:58:52,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11176 to 7432. [2020-12-22 05:58:52,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7432 states. [2020-12-22 05:58:52,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7432 states to 7432 states and 13913 transitions. [2020-12-22 05:58:52,824 INFO L78 Accepts]: Start accepts. Automaton has 7432 states and 13913 transitions. Word has length 77 [2020-12-22 05:58:52,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:52,825 INFO L481 AbstractCegarLoop]: Abstraction has 7432 states and 13913 transitions. [2020-12-22 05:58:52,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:52,825 INFO L276 IsEmpty]: Start isEmpty. Operand 7432 states and 13913 transitions. [2020-12-22 05:58:52,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 05:58:52,828 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:52,828 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 05:58:52,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 05:58:52,829 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:52,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:52,829 INFO L82 PathProgramCache]: Analyzing trace with hash 899005140, now seen corresponding path program 1 times [2020-12-22 05:58:52,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:52,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016215620] [2020-12-22 05:58:52,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:52,923 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 05:58:52,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016215620] [2020-12-22 05:58:52,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:52,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:58:52,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224536481] [2020-12-22 05:58:52,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:58:52,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:52,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:58:52,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:58:52,927 INFO L87 Difference]: Start difference. First operand 7432 states and 13913 transitions. Second operand 7 states. [2020-12-22 05:58:54,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:54,276 INFO L93 Difference]: Finished difference Result 19486 states and 36456 transitions. [2020-12-22 05:58:54,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:58:54,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-12-22 05:58:54,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:54,302 INFO L225 Difference]: With dead ends: 19486 [2020-12-22 05:58:54,302 INFO L226 Difference]: Without dead ends: 15115 [2020-12-22 05:58:54,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:58:54,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15115 states. [2020-12-22 05:58:54,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15115 to 7436. [2020-12-22 05:58:54,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7436 states. [2020-12-22 05:58:54,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7436 states to 7436 states and 13911 transitions. [2020-12-22 05:58:54,831 INFO L78 Accepts]: Start accepts. Automaton has 7436 states and 13911 transitions. Word has length 83 [2020-12-22 05:58:54,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:54,831 INFO L481 AbstractCegarLoop]: Abstraction has 7436 states and 13911 transitions. [2020-12-22 05:58:54,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:58:54,831 INFO L276 IsEmpty]: Start isEmpty. Operand 7436 states and 13911 transitions. [2020-12-22 05:58:54,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 05:58:54,834 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:54,834 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 05:58:54,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 05:58:54,835 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:54,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:54,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1117859858, now seen corresponding path program 1 times [2020-12-22 05:58:54,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:54,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234864275] [2020-12-22 05:58:54,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:54,914 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 05:58:54,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234864275] [2020-12-22 05:58:54,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:54,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:58:54,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879443084] [2020-12-22 05:58:54,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:58:54,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:54,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:58:54,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:54,916 INFO L87 Difference]: Start difference. First operand 7436 states and 13911 transitions. Second operand 5 states. [2020-12-22 05:58:55,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:55,494 INFO L93 Difference]: Finished difference Result 11627 states and 21750 transitions. [2020-12-22 05:58:55,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:55,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 05:58:55,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:55,506 INFO L225 Difference]: With dead ends: 11627 [2020-12-22 05:58:55,507 INFO L226 Difference]: Without dead ends: 7455 [2020-12-22 05:58:55,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:58:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7455 states. [2020-12-22 05:58:55,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7455 to 7436. [2020-12-22 05:58:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7436 states. [2020-12-22 05:58:55,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7436 states to 7436 states and 13896 transitions. [2020-12-22 05:58:55,989 INFO L78 Accepts]: Start accepts. Automaton has 7436 states and 13896 transitions. Word has length 83 [2020-12-22 05:58:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:55,989 INFO L481 AbstractCegarLoop]: Abstraction has 7436 states and 13896 transitions. [2020-12-22 05:58:55,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:58:55,989 INFO L276 IsEmpty]: Start isEmpty. Operand 7436 states and 13896 transitions. [2020-12-22 05:58:55,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 05:58:55,992 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:55,992 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 05:58:55,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 05:58:55,992 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:55,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:55,993 INFO L82 PathProgramCache]: Analyzing trace with hash 531053844, now seen corresponding path program 1 times [2020-12-22 05:58:55,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:55,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806212375] [2020-12-22 05:58:55,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:56,096 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 05:58:56,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806212375] [2020-12-22 05:58:56,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:56,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:56,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056295593] [2020-12-22 05:58:56,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:58:56,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:56,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:58:56,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:56,103 INFO L87 Difference]: Start difference. First operand 7436 states and 13896 transitions. Second operand 3 states. [2020-12-22 05:58:56,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:56,702 INFO L93 Difference]: Finished difference Result 13405 states and 25069 transitions. [2020-12-22 05:58:56,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:58:56,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 05:58:56,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:56,720 INFO L225 Difference]: With dead ends: 13405 [2020-12-22 05:58:56,720 INFO L226 Difference]: Without dead ends: 7414 [2020-12-22 05:58:56,731 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 05:58:56,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7414 states. [2020-12-22 05:58:57,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7414 to 7414. [2020-12-22 05:58:57,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7414 states. [2020-12-22 05:58:57,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7414 states to 7414 states and 13854 transitions. [2020-12-22 05:58:57,287 INFO L78 Accepts]: Start accepts. Automaton has 7414 states and 13854 transitions. Word has length 83 [2020-12-22 05:58:57,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:57,288 INFO L481 AbstractCegarLoop]: Abstraction has 7414 states and 13854 transitions. [2020-12-22 05:58:57,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:58:57,288 INFO L276 IsEmpty]: Start isEmpty. Operand 7414 states and 13854 transitions. [2020-12-22 05:58:57,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 05:58:57,291 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:57,291 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] [2020-12-22 05:58:57,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 05:58:57,291 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:57,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:57,292 INFO L82 PathProgramCache]: Analyzing trace with hash 371034254, now seen corresponding path program 1 times [2020-12-22 05:58:57,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:57,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187862466] [2020-12-22 05:58:57,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:57,394 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 05:58:57,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187862466] [2020-12-22 05:58:57,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:57,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:58:57,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899064967] [2020-12-22 05:58:57,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:58:57,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:57,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:58:57,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:57,399 INFO L87 Difference]: Start difference. First operand 7414 states and 13854 transitions. Second operand 5 states. [2020-12-22 05:58:59,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:59,159 INFO L93 Difference]: Finished difference Result 30024 states and 55693 transitions. [2020-12-22 05:58:59,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:58:59,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-12-22 05:58:59,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:59,198 INFO L225 Difference]: With dead ends: 30024 [2020-12-22 05:58:59,198 INFO L226 Difference]: Without dead ends: 25883 [2020-12-22 05:58:59,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:58:59,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25883 states. [2020-12-22 05:59:00,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25883 to 9136. [2020-12-22 05:59:00,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9136 states. [2020-12-22 05:59:00,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9136 states to 9136 states and 16832 transitions. [2020-12-22 05:59:00,151 INFO L78 Accepts]: Start accepts. Automaton has 9136 states and 16832 transitions. Word has length 85 [2020-12-22 05:59:00,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:00,151 INFO L481 AbstractCegarLoop]: Abstraction has 9136 states and 16832 transitions. [2020-12-22 05:59:00,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:00,152 INFO L276 IsEmpty]: Start isEmpty. Operand 9136 states and 16832 transitions. [2020-12-22 05:59:00,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 05:59:00,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:00,154 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] [2020-12-22 05:59:00,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 05:59:00,154 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:00,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:00,155 INFO L82 PathProgramCache]: Analyzing trace with hash 55726604, now seen corresponding path program 1 times [2020-12-22 05:59:00,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:00,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660513610] [2020-12-22 05:59:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:00,260 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 05:59:00,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660513610] [2020-12-22 05:59:00,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:00,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:00,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753181477] [2020-12-22 05:59:00,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:00,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:00,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:00,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:00,262 INFO L87 Difference]: Start difference. First operand 9136 states and 16832 transitions. Second operand 5 states. [2020-12-22 05:59:01,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:01,382 INFO L93 Difference]: Finished difference Result 15100 states and 27857 transitions. [2020-12-22 05:59:01,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:01,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-12-22 05:59:01,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:01,401 INFO L225 Difference]: With dead ends: 15100 [2020-12-22 05:59:01,402 INFO L226 Difference]: Without dead ends: 15087 [2020-12-22 05:59:01,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:01,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15087 states. [2020-12-22 05:59:02,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15087 to 9154. [2020-12-22 05:59:02,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9154 states. [2020-12-22 05:59:02,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9154 states to 9154 states and 16850 transitions. [2020-12-22 05:59:02,448 INFO L78 Accepts]: Start accepts. Automaton has 9154 states and 16850 transitions. Word has length 85 [2020-12-22 05:59:02,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:02,449 INFO L481 AbstractCegarLoop]: Abstraction has 9154 states and 16850 transitions. [2020-12-22 05:59:02,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:02,449 INFO L276 IsEmpty]: Start isEmpty. Operand 9154 states and 16850 transitions. [2020-12-22 05:59:02,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 05:59:02,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:02,452 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] [2020-12-22 05:59:02,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 05:59:02,452 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:02,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:02,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1097921713, now seen corresponding path program 1 times [2020-12-22 05:59:02,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:02,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642015682] [2020-12-22 05:59:02,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:02,532 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 05:59:02,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642015682] [2020-12-22 05:59:02,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:02,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:02,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994238124] [2020-12-22 05:59:02,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:02,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:02,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:02,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:02,536 INFO L87 Difference]: Start difference. First operand 9154 states and 16850 transitions. Second operand 4 states. [2020-12-22 05:59:03,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:03,043 INFO L93 Difference]: Finished difference Result 9173 states and 16868 transitions. [2020-12-22 05:59:03,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:59:03,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-22 05:59:03,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:03,058 INFO L225 Difference]: With dead ends: 9173 [2020-12-22 05:59:03,059 INFO L226 Difference]: Without dead ends: 9160 [2020-12-22 05:59:03,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:03,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9160 states. [2020-12-22 05:59:03,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9160 to 9154. [2020-12-22 05:59:03,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9154 states. [2020-12-22 05:59:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9154 states to 9154 states and 16840 transitions. [2020-12-22 05:59:03,717 INFO L78 Accepts]: Start accepts. Automaton has 9154 states and 16840 transitions. Word has length 87 [2020-12-22 05:59:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:03,717 INFO L481 AbstractCegarLoop]: Abstraction has 9154 states and 16840 transitions. [2020-12-22 05:59:03,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:03,717 INFO L276 IsEmpty]: Start isEmpty. Operand 9154 states and 16840 transitions. [2020-12-22 05:59:03,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 05:59:03,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:03,720 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] [2020-12-22 05:59:03,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 05:59:03,720 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:03,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:03,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1116592923, now seen corresponding path program 1 times [2020-12-22 05:59:03,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:03,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835145797] [2020-12-22 05:59:03,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:03,825 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 05:59:03,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835145797] [2020-12-22 05:59:03,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:03,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:03,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467790410] [2020-12-22 05:59:03,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:03,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:03,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:03,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:03,827 INFO L87 Difference]: Start difference. First operand 9154 states and 16840 transitions. Second operand 5 states. [2020-12-22 05:59:05,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:05,414 INFO L93 Difference]: Finished difference Result 21715 states and 39757 transitions. [2020-12-22 05:59:05,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:05,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-12-22 05:59:05,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:05,435 INFO L225 Difference]: With dead ends: 21715 [2020-12-22 05:59:05,435 INFO L226 Difference]: Without dead ends: 14268 [2020-12-22 05:59:05,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:05,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14268 states. [2020-12-22 05:59:06,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14268 to 9154. [2020-12-22 05:59:06,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9154 states. [2020-12-22 05:59:06,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9154 states to 9154 states and 16830 transitions. [2020-12-22 05:59:06,125 INFO L78 Accepts]: Start accepts. Automaton has 9154 states and 16830 transitions. Word has length 94 [2020-12-22 05:59:06,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:06,125 INFO L481 AbstractCegarLoop]: Abstraction has 9154 states and 16830 transitions. [2020-12-22 05:59:06,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:06,125 INFO L276 IsEmpty]: Start isEmpty. Operand 9154 states and 16830 transitions. [2020-12-22 05:59:06,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 05:59:06,129 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:06,129 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 05:59:06,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 05:59:06,130 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:06,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:06,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1307988227, now seen corresponding path program 1 times [2020-12-22 05:59:06,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:06,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856168002] [2020-12-22 05:59:06,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:06,207 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 05:59:06,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856168002] [2020-12-22 05:59:06,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:06,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:06,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617766761] [2020-12-22 05:59:06,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:06,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:06,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:06,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:06,210 INFO L87 Difference]: Start difference. First operand 9154 states and 16830 transitions. Second operand 5 states. [2020-12-22 05:59:07,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:07,675 INFO L93 Difference]: Finished difference Result 21612 states and 39611 transitions. [2020-12-22 05:59:07,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:07,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 05:59:07,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:07,693 INFO L225 Difference]: With dead ends: 21612 [2020-12-22 05:59:07,693 INFO L226 Difference]: Without dead ends: 13827 [2020-12-22 05:59:07,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:59:07,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13827 states. [2020-12-22 05:59:08,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13827 to 9154. [2020-12-22 05:59:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9154 states. [2020-12-22 05:59:08,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9154 states to 9154 states and 16634 transitions. [2020-12-22 05:59:08,362 INFO L78 Accepts]: Start accepts. Automaton has 9154 states and 16634 transitions. Word has length 98 [2020-12-22 05:59:08,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:08,363 INFO L481 AbstractCegarLoop]: Abstraction has 9154 states and 16634 transitions. [2020-12-22 05:59:08,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:08,363 INFO L276 IsEmpty]: Start isEmpty. Operand 9154 states and 16634 transitions. [2020-12-22 05:59:08,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 05:59:08,366 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:08,366 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 05:59:08,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 05:59:08,367 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:08,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:08,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1214172120, now seen corresponding path program 1 times [2020-12-22 05:59:08,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:08,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760713479] [2020-12-22 05:59:08,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:08,507 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 05:59:08,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760713479] [2020-12-22 05:59:08,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:08,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:08,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047110353] [2020-12-22 05:59:08,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:08,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:08,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:08,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:08,508 INFO L87 Difference]: Start difference. First operand 9154 states and 16634 transitions. Second operand 5 states. [2020-12-22 05:59:09,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:09,997 INFO L93 Difference]: Finished difference Result 20665 states and 37619 transitions. [2020-12-22 05:59:09,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:09,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-12-22 05:59:09,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:10,020 INFO L225 Difference]: With dead ends: 20665 [2020-12-22 05:59:10,020 INFO L226 Difference]: Without dead ends: 15154 [2020-12-22 05:59:10,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:59:10,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15154 states. [2020-12-22 05:59:10,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15154 to 9132. [2020-12-22 05:59:10,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9132 states. [2020-12-22 05:59:10,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9132 states to 9132 states and 16581 transitions. [2020-12-22 05:59:10,719 INFO L78 Accepts]: Start accepts. Automaton has 9132 states and 16581 transitions. Word has length 99 [2020-12-22 05:59:10,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:10,720 INFO L481 AbstractCegarLoop]: Abstraction has 9132 states and 16581 transitions. [2020-12-22 05:59:10,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:10,720 INFO L276 IsEmpty]: Start isEmpty. Operand 9132 states and 16581 transitions. [2020-12-22 05:59:10,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 05:59:10,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:10,725 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 05:59:10,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 05:59:10,725 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:10,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:10,726 INFO L82 PathProgramCache]: Analyzing trace with hash -149399020, now seen corresponding path program 1 times [2020-12-22 05:59:10,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:10,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629752703] [2020-12-22 05:59:10,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:10,918 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 05:59:10,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629752703] [2020-12-22 05:59:10,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:10,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:59:10,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406181351] [2020-12-22 05:59:10,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:59:10,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:10,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:59:10,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:59:10,921 INFO L87 Difference]: Start difference. First operand 9132 states and 16581 transitions. Second operand 7 states. [2020-12-22 05:59:11,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:11,945 INFO L93 Difference]: Finished difference Result 14580 states and 26565 transitions. [2020-12-22 05:59:11,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:11,945 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-12-22 05:59:11,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:11,964 INFO L225 Difference]: With dead ends: 14580 [2020-12-22 05:59:11,964 INFO L226 Difference]: Without dead ends: 14567 [2020-12-22 05:59:11,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:59:11,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14567 states. [2020-12-22 05:59:12,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14567 to 9147. [2020-12-22 05:59:12,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9147 states. [2020-12-22 05:59:12,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9147 states to 9147 states and 16591 transitions. [2020-12-22 05:59:12,730 INFO L78 Accepts]: Start accepts. Automaton has 9147 states and 16591 transitions. Word has length 99 [2020-12-22 05:59:12,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:12,730 INFO L481 AbstractCegarLoop]: Abstraction has 9147 states and 16591 transitions. [2020-12-22 05:59:12,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:59:12,730 INFO L276 IsEmpty]: Start isEmpty. Operand 9147 states and 16591 transitions. [2020-12-22 05:59:12,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 05:59:12,733 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:12,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:12,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 05:59:12,733 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:12,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:12,734 INFO L82 PathProgramCache]: Analyzing trace with hash 257409240, now seen corresponding path program 1 times [2020-12-22 05:59:12,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:12,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954617751] [2020-12-22 05:59:12,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:12,823 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 05:59:12,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954617751] [2020-12-22 05:59:12,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:12,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:12,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503227444] [2020-12-22 05:59:12,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:12,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:12,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:12,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:12,825 INFO L87 Difference]: Start difference. First operand 9147 states and 16591 transitions. Second operand 5 states. [2020-12-22 05:59:16,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:16,312 INFO L93 Difference]: Finished difference Result 47420 states and 86851 transitions. [2020-12-22 05:59:16,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:16,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-12-22 05:59:16,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:16,364 INFO L225 Difference]: With dead ends: 47420 [2020-12-22 05:59:16,364 INFO L226 Difference]: Without dead ends: 39926 [2020-12-22 05:59:16,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:59:16,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39926 states. [2020-12-22 05:59:17,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39926 to 18258. [2020-12-22 05:59:17,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18258 states. [2020-12-22 05:59:17,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18258 states to 18258 states and 33138 transitions. [2020-12-22 05:59:17,754 INFO L78 Accepts]: Start accepts. Automaton has 18258 states and 33138 transitions. Word has length 115 [2020-12-22 05:59:17,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:17,754 INFO L481 AbstractCegarLoop]: Abstraction has 18258 states and 33138 transitions. [2020-12-22 05:59:17,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:17,754 INFO L276 IsEmpty]: Start isEmpty. Operand 18258 states and 33138 transitions. [2020-12-22 05:59:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 05:59:17,760 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:17,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:17,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 05:59:17,761 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:17,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:17,761 INFO L82 PathProgramCache]: Analyzing trace with hash 341624496, now seen corresponding path program 1 times [2020-12-22 05:59:17,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:17,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428420880] [2020-12-22 05:59:17,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:17,831 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 05:59:17,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428420880] [2020-12-22 05:59:17,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:17,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:17,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477347849] [2020-12-22 05:59:17,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:17,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:17,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:17,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:17,833 INFO L87 Difference]: Start difference. First operand 18258 states and 33138 transitions. Second operand 3 states. [2020-12-22 05:59:20,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:20,349 INFO L93 Difference]: Finished difference Result 43271 states and 78205 transitions. [2020-12-22 05:59:20,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:20,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2020-12-22 05:59:20,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:20,385 INFO L225 Difference]: With dead ends: 43271 [2020-12-22 05:59:20,385 INFO L226 Difference]: Without dead ends: 27706 [2020-12-22 05:59:20,397 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 05:59:20,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27706 states. [2020-12-22 05:59:21,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27706 to 17814. [2020-12-22 05:59:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17814 states. [2020-12-22 05:59:21,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17814 states to 17814 states and 32197 transitions. [2020-12-22 05:59:21,840 INFO L78 Accepts]: Start accepts. Automaton has 17814 states and 32197 transitions. Word has length 116 [2020-12-22 05:59:21,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:21,840 INFO L481 AbstractCegarLoop]: Abstraction has 17814 states and 32197 transitions. [2020-12-22 05:59:21,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:21,840 INFO L276 IsEmpty]: Start isEmpty. Operand 17814 states and 32197 transitions. [2020-12-22 05:59:21,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 05:59:21,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:21,847 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:21,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 05:59:21,847 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:21,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:21,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1694656862, now seen corresponding path program 1 times [2020-12-22 05:59:21,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:21,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406420926] [2020-12-22 05:59:21,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:21,913 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 05:59:21,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406420926] [2020-12-22 05:59:21,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:21,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:21,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099786613] [2020-12-22 05:59:21,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:21,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:21,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:21,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:21,915 INFO L87 Difference]: Start difference. First operand 17814 states and 32197 transitions. Second operand 5 states. [2020-12-22 05:59:23,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:23,235 INFO L93 Difference]: Finished difference Result 26272 states and 47569 transitions. [2020-12-22 05:59:23,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:23,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-12-22 05:59:23,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:23,261 INFO L225 Difference]: With dead ends: 26272 [2020-12-22 05:59:23,261 INFO L226 Difference]: Without dead ends: 17302 [2020-12-22 05:59:23,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:23,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17302 states. [2020-12-22 05:59:24,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17302 to 17302. [2020-12-22 05:59:24,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17302 states. [2020-12-22 05:59:24,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17302 states to 17302 states and 31356 transitions. [2020-12-22 05:59:24,739 INFO L78 Accepts]: Start accepts. Automaton has 17302 states and 31356 transitions. Word has length 116 [2020-12-22 05:59:24,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:24,739 INFO L481 AbstractCegarLoop]: Abstraction has 17302 states and 31356 transitions. [2020-12-22 05:59:24,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:24,740 INFO L276 IsEmpty]: Start isEmpty. Operand 17302 states and 31356 transitions. [2020-12-22 05:59:24,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 05:59:24,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:24,748 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:24,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 05:59:24,752 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:24,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:24,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1124334698, now seen corresponding path program 1 times [2020-12-22 05:59:24,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:24,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166335758] [2020-12-22 05:59:24,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:24,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166335758] [2020-12-22 05:59:24,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:24,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:24,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453305517] [2020-12-22 05:59:24,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:24,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:24,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:24,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:24,877 INFO L87 Difference]: Start difference. First operand 17302 states and 31356 transitions. Second operand 6 states. [2020-12-22 05:59:29,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:29,702 INFO L93 Difference]: Finished difference Result 51341 states and 93172 transitions. [2020-12-22 05:59:29,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:59:29,703 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2020-12-22 05:59:29,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:29,745 INFO L225 Difference]: With dead ends: 51341 [2020-12-22 05:59:29,746 INFO L226 Difference]: Without dead ends: 36446 [2020-12-22 05:59:29,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:59:29,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36446 states. [2020-12-22 05:59:31,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36446 to 23686. [2020-12-22 05:59:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23686 states. [2020-12-22 05:59:31,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23686 states to 23686 states and 43015 transitions. [2020-12-22 05:59:31,499 INFO L78 Accepts]: Start accepts. Automaton has 23686 states and 43015 transitions. Word has length 132 [2020-12-22 05:59:31,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:31,499 INFO L481 AbstractCegarLoop]: Abstraction has 23686 states and 43015 transitions. [2020-12-22 05:59:31,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand 23686 states and 43015 transitions. [2020-12-22 05:59:31,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 05:59:31,506 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:31,506 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:31,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 05:59:31,506 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:31,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:31,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1802664536, now seen corresponding path program 1 times [2020-12-22 05:59:31,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:31,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280689712] [2020-12-22 05:59:31,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 05:59:31,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280689712] [2020-12-22 05:59:31,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:31,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:59:31,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645450278] [2020-12-22 05:59:31,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:31,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:31,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:31,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:31,587 INFO L87 Difference]: Start difference. First operand 23686 states and 43015 transitions. Second operand 3 states. [2020-12-22 05:59:33,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:33,119 INFO L93 Difference]: Finished difference Result 38736 states and 70649 transitions. [2020-12-22 05:59:33,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:33,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-12-22 05:59:33,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:33,143 INFO L225 Difference]: With dead ends: 38736 [2020-12-22 05:59:33,143 INFO L226 Difference]: Without dead ends: 21106 [2020-12-22 05:59:33,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:33,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21106 states. [2020-12-22 05:59:34,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21106 to 21093. [2020-12-22 05:59:34,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21093 states. [2020-12-22 05:59:34,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21093 states to 21093 states and 38823 transitions. [2020-12-22 05:59:34,797 INFO L78 Accepts]: Start accepts. Automaton has 21093 states and 38823 transitions. Word has length 132 [2020-12-22 05:59:34,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:34,797 INFO L481 AbstractCegarLoop]: Abstraction has 21093 states and 38823 transitions. [2020-12-22 05:59:34,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:34,797 INFO L276 IsEmpty]: Start isEmpty. Operand 21093 states and 38823 transitions. [2020-12-22 05:59:34,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-22 05:59:34,804 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:34,804 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:34,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 05:59:34,804 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:34,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:34,805 INFO L82 PathProgramCache]: Analyzing trace with hash -262363383, now seen corresponding path program 1 times [2020-12-22 05:59:34,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:34,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793624193] [2020-12-22 05:59:34,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 05:59:34,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793624193] [2020-12-22 05:59:34,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:34,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:34,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484069435] [2020-12-22 05:59:34,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:34,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:34,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:34,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:34,919 INFO L87 Difference]: Start difference. First operand 21093 states and 38823 transitions. Second operand 5 states. [2020-12-22 05:59:37,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:37,559 INFO L93 Difference]: Finished difference Result 57172 states and 105209 transitions. [2020-12-22 05:59:37,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:37,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-12-22 05:59:37,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:37,609 INFO L225 Difference]: With dead ends: 57172 [2020-12-22 05:59:37,609 INFO L226 Difference]: Without dead ends: 42113 [2020-12-22 05:59:37,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:59:37,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42113 states. [2020-12-22 05:59:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42113 to 42113. [2020-12-22 05:59:40,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42113 states. [2020-12-22 05:59:40,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42113 states to 42113 states and 77544 transitions. [2020-12-22 05:59:40,516 INFO L78 Accepts]: Start accepts. Automaton has 42113 states and 77544 transitions. Word has length 133 [2020-12-22 05:59:40,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:40,517 INFO L481 AbstractCegarLoop]: Abstraction has 42113 states and 77544 transitions. [2020-12-22 05:59:40,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:40,517 INFO L276 IsEmpty]: Start isEmpty. Operand 42113 states and 77544 transitions. [2020-12-22 05:59:40,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-22 05:59:40,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:40,529 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:40,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 05:59:40,530 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:40,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:40,530 INFO L82 PathProgramCache]: Analyzing trace with hash 946720015, now seen corresponding path program 1 times [2020-12-22 05:59:40,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:40,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118783804] [2020-12-22 05:59:40,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:40,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118783804] [2020-12-22 05:59:40,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:40,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:40,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416382592] [2020-12-22 05:59:40,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:40,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:40,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:40,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:40,621 INFO L87 Difference]: Start difference. First operand 42113 states and 77544 transitions. Second operand 6 states. [2020-12-22 05:59:48,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:48,196 INFO L93 Difference]: Finished difference Result 111579 states and 204982 transitions. [2020-12-22 05:59:48,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:59:48,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-12-22 05:59:48,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:48,310 INFO L225 Difference]: With dead ends: 111579 [2020-12-22 05:59:48,310 INFO L226 Difference]: Without dead ends: 74240 [2020-12-22 05:59:48,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:59:48,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74240 states. [2020-12-22 05:59:52,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74240 to 54847. [2020-12-22 05:59:52,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54847 states. [2020-12-22 05:59:52,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54847 states to 54847 states and 101004 transitions. [2020-12-22 05:59:52,228 INFO L78 Accepts]: Start accepts. Automaton has 54847 states and 101004 transitions. Word has length 133 [2020-12-22 05:59:52,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:52,229 INFO L481 AbstractCegarLoop]: Abstraction has 54847 states and 101004 transitions. [2020-12-22 05:59:52,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:52,229 INFO L276 IsEmpty]: Start isEmpty. Operand 54847 states and 101004 transitions. [2020-12-22 05:59:52,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 05:59:52,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:52,244 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:52,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 05:59:52,244 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:52,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:52,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1687715882, now seen corresponding path program 1 times [2020-12-22 05:59:52,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:52,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306353194] [2020-12-22 05:59:52,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:52,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 05:59:52,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306353194] [2020-12-22 05:59:52,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:52,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:52,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635707678] [2020-12-22 05:59:52,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:52,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:52,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:52,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:52,341 INFO L87 Difference]: Start difference. First operand 54847 states and 101004 transitions. Second operand 5 states. [2020-12-22 05:59:59,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:59,506 INFO L93 Difference]: Finished difference Result 152401 states and 280634 transitions. [2020-12-22 05:59:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:59,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-12-22 05:59:59,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:59,681 INFO L225 Difference]: With dead ends: 152401 [2020-12-22 05:59:59,681 INFO L226 Difference]: Without dead ends: 109568 [2020-12-22 05:59:59,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:59:59,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109568 states. [2020-12-22 06:00:07,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109568 to 109564. [2020-12-22 06:00:07,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109564 states. [2020-12-22 06:00:07,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109564 states to 109564 states and 201802 transitions. [2020-12-22 06:00:07,628 INFO L78 Accepts]: Start accepts. Automaton has 109564 states and 201802 transitions. Word has length 134 [2020-12-22 06:00:07,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:07,629 INFO L481 AbstractCegarLoop]: Abstraction has 109564 states and 201802 transitions. [2020-12-22 06:00:07,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:07,629 INFO L276 IsEmpty]: Start isEmpty. Operand 109564 states and 201802 transitions. [2020-12-22 06:00:07,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 06:00:07,654 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:07,654 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:07,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 06:00:07,654 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:07,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:07,654 INFO L82 PathProgramCache]: Analyzing trace with hash 473495557, now seen corresponding path program 1 times [2020-12-22 06:00:07,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:07,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110180715] [2020-12-22 06:00:07,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:00:07,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110180715] [2020-12-22 06:00:07,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:07,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:07,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420851885] [2020-12-22 06:00:07,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:07,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:07,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:07,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:07,745 INFO L87 Difference]: Start difference. First operand 109564 states and 201802 transitions. Second operand 5 states. [2020-12-22 06:00:23,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:23,049 INFO L93 Difference]: Finished difference Result 309550 states and 570534 transitions. [2020-12-22 06:00:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:23,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-12-22 06:00:23,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:23,735 INFO L225 Difference]: With dead ends: 309550 [2020-12-22 06:00:23,735 INFO L226 Difference]: Without dead ends: 224020 [2020-12-22 06:00:23,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:00:24,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224020 states. [2020-12-22 06:00:32,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224020 to 109564. [2020-12-22 06:00:32,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109564 states. [2020-12-22 06:00:32,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109564 states to 109564 states and 201784 transitions. [2020-12-22 06:00:32,557 INFO L78 Accepts]: Start accepts. Automaton has 109564 states and 201784 transitions. Word has length 134 [2020-12-22 06:00:32,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:32,557 INFO L481 AbstractCegarLoop]: Abstraction has 109564 states and 201784 transitions. [2020-12-22 06:00:32,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:32,558 INFO L276 IsEmpty]: Start isEmpty. Operand 109564 states and 201784 transitions. [2020-12-22 06:00:32,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 06:00:32,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:32,586 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:32,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 06:00:32,587 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:32,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:32,587 INFO L82 PathProgramCache]: Analyzing trace with hash -226897969, now seen corresponding path program 1 times [2020-12-22 06:00:32,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:32,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216545034] [2020-12-22 06:00:32,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:32,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:32,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216545034] [2020-12-22 06:00:32,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:32,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:32,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462740495] [2020-12-22 06:00:32,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:32,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:32,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:32,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:32,695 INFO L87 Difference]: Start difference. First operand 109564 states and 201784 transitions. Second operand 6 states. [2020-12-22 06:00:48,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:48,429 INFO L93 Difference]: Finished difference Result 273812 states and 502812 transitions. [2020-12-22 06:00:48,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:00:48,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-12-22 06:00:48,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:48,925 INFO L225 Difference]: With dead ends: 273812 [2020-12-22 06:00:48,925 INFO L226 Difference]: Without dead ends: 173714 [2020-12-22 06:00:48,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:00:49,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173714 states. [2020-12-22 06:00:58,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173714 to 134996. [2020-12-22 06:00:58,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134996 states. [2020-12-22 06:00:58,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134996 states to 134996 states and 248340 transitions. [2020-12-22 06:00:58,980 INFO L78 Accepts]: Start accepts. Automaton has 134996 states and 248340 transitions. Word has length 134 [2020-12-22 06:00:58,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:58,980 INFO L481 AbstractCegarLoop]: Abstraction has 134996 states and 248340 transitions. [2020-12-22 06:00:58,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:58,981 INFO L276 IsEmpty]: Start isEmpty. Operand 134996 states and 248340 transitions. [2020-12-22 06:00:59,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 06:00:59,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:59,030 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:59,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 06:00:59,030 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:59,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:59,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1697683524, now seen corresponding path program 1 times [2020-12-22 06:00:59,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:59,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639217859] [2020-12-22 06:00:59,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:59,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:59,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639217859] [2020-12-22 06:00:59,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:59,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:59,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334035338] [2020-12-22 06:00:59,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:59,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:59,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:59,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:59,126 INFO L87 Difference]: Start difference. First operand 134996 states and 248340 transitions. Second operand 6 states. [2020-12-22 06:01:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:15,624 INFO L93 Difference]: Finished difference Result 324076 states and 594184 transitions. [2020-12-22 06:01:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:01:15,624 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-12-22 06:01:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:16,071 INFO L225 Difference]: With dead ends: 324076 [2020-12-22 06:01:16,071 INFO L226 Difference]: Without dead ends: 199034 [2020-12-22 06:01:16,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-22 06:01:16,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199034 states.