/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/systemc/token_ring.13.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:12:00,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:12:00,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:12:00,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:12:00,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:12:00,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:12:00,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:12:00,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:12:00,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:12:00,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:12:00,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:12:00,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:12:00,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:12:00,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:12:00,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:12:00,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:12:00,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:12:00,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:12:00,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:12:00,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:12:00,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:12:00,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:12:00,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:12:00,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:12:00,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:12:00,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 07:12:00,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 07:12:00,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 07:12:00,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 07:12:00,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 07:12:00,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 07:12:00,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 07:12:00,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 07:12:00,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:12:00,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:12:00,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:12:00,696 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:12:00,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:12:00,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:12:00,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:12:00,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:12:00,725 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:12:00,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:12:00,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:12:00,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:12:00,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:12:00,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:12:00,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:12:00,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:12:00,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:12:00,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:12:00,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:12:00,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:12:00,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:12:00,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:12:00,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:12:00,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:12:00,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:12:00,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:12:00,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:12:00,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:12:00,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:12:00,731 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:12:01,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:12:01,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:12:01,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:12:01,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:12:01,114 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:12:01,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.13.cil-2.c [2020-12-22 07:12:01,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a47c97f0/f951382e6e594346a30a46848f28f52e/FLAGe8ccd20d4 [2020-12-22 07:12:01,923 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:12:01,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.13.cil-2.c [2020-12-22 07:12:01,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a47c97f0/f951382e6e594346a30a46848f28f52e/FLAGe8ccd20d4 [2020-12-22 07:12:02,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a47c97f0/f951382e6e594346a30a46848f28f52e [2020-12-22 07:12:02,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:12:02,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:12:02,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:12:02,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:12:02,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:12:02,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:12:02" (1/1) ... [2020-12-22 07:12:02,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e393b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:12:02, skipping insertion in model container [2020-12-22 07:12:02,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:12:02" (1/1) ... [2020-12-22 07:12:02,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:12:02,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:12:02,381 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/systemc/token_ring.13.cil-2.c[366,379] [2020-12-22 07:12:02,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:12:02,677 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:12:02,696 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/systemc/token_ring.13.cil-2.c[366,379] [2020-12-22 07:12:02,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:12:02,881 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:12:02,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:12:02 WrapperNode [2020-12-22 07:12:02,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:12:02,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:12:02,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:12:02,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:12:02,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:12:02" (1/1) ... [2020-12-22 07:12:02,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:12:02" (1/1) ... [2020-12-22 07:12:03,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:12:03,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:12:03,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:12:03,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:12:03,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:12:02" (1/1) ... [2020-12-22 07:12:03,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:12:02" (1/1) ... [2020-12-22 07:12:03,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:12:02" (1/1) ... [2020-12-22 07:12:03,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:12:02" (1/1) ... [2020-12-22 07:12:03,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:12:02" (1/1) ... [2020-12-22 07:12:03,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:12:02" (1/1) ... [2020-12-22 07:12:03,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:12:02" (1/1) ... [2020-12-22 07:12:03,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:12:03,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:12:03,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:12:03,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:12:03,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:12:02" (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 07:12:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:12:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:12:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:12:03,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:12:06,781 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:12:06,782 INFO L299 CfgBuilder]: Removed 620 assume(true) statements. [2020-12-22 07:12:06,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:12:06 BoogieIcfgContainer [2020-12-22 07:12:06,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:12:06,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:12:06,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:12:06,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:12:06,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:12:02" (1/3) ... [2020-12-22 07:12:06,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4169235a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:12:06, skipping insertion in model container [2020-12-22 07:12:06,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:12:02" (2/3) ... [2020-12-22 07:12:06,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4169235a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:12:06, skipping insertion in model container [2020-12-22 07:12:06,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:12:06" (3/3) ... [2020-12-22 07:12:06,795 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.13.cil-2.c [2020-12-22 07:12:06,802 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:12:06,809 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:12:06,829 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:12:06,870 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:12:06,871 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:12:06,871 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:12:06,871 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:12:06,871 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:12:06,871 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:12:06,871 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:12:06,872 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:12:06,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states. [2020-12-22 07:12:06,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:06,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:06,935 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:06,936 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:06,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:06,943 INFO L82 PathProgramCache]: Analyzing trace with hash 585149193, now seen corresponding path program 1 times [2020-12-22 07:12:06,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:06,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786965405] [2020-12-22 07:12:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:07,317 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 07:12:07,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786965405] [2020-12-22 07:12:07,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:07,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:07,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209558540] [2020-12-22 07:12:07,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:12:07,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:07,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:12:07,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:12:07,343 INFO L87 Difference]: Start difference. First operand 1989 states. Second operand 3 states. [2020-12-22 07:12:07,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:07,569 INFO L93 Difference]: Finished difference Result 3973 states and 5975 transitions. [2020-12-22 07:12:07,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:12:07,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-22 07:12:07,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:07,611 INFO L225 Difference]: With dead ends: 3973 [2020-12-22 07:12:07,612 INFO L226 Difference]: Without dead ends: 1985 [2020-12-22 07:12:07,627 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 07:12:07,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2020-12-22 07:12:07,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1985. [2020-12-22 07:12:07,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1985 states. [2020-12-22 07:12:07,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2953 transitions. [2020-12-22 07:12:07,814 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2953 transitions. Word has length 171 [2020-12-22 07:12:07,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:07,814 INFO L481 AbstractCegarLoop]: Abstraction has 1985 states and 2953 transitions. [2020-12-22 07:12:07,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:12:07,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2953 transitions. [2020-12-22 07:12:07,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:07,826 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:07,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:07,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:12:07,827 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:07,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:07,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1992875143, now seen corresponding path program 1 times [2020-12-22 07:12:07,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:07,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35747723] [2020-12-22 07:12:07,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:08,000 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 07:12:08,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35747723] [2020-12-22 07:12:08,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:08,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:08,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300813947] [2020-12-22 07:12:08,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:12:08,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:08,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:12:08,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:12:08,008 INFO L87 Difference]: Start difference. First operand 1985 states and 2953 transitions. Second operand 3 states. [2020-12-22 07:12:08,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:08,138 INFO L93 Difference]: Finished difference Result 3957 states and 5884 transitions. [2020-12-22 07:12:08,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:12:08,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-22 07:12:08,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:08,152 INFO L225 Difference]: With dead ends: 3957 [2020-12-22 07:12:08,153 INFO L226 Difference]: Without dead ends: 1985 [2020-12-22 07:12:08,160 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 07:12:08,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2020-12-22 07:12:08,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1985. [2020-12-22 07:12:08,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1985 states. [2020-12-22 07:12:08,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2952 transitions. [2020-12-22 07:12:08,259 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2952 transitions. Word has length 171 [2020-12-22 07:12:08,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:08,262 INFO L481 AbstractCegarLoop]: Abstraction has 1985 states and 2952 transitions. [2020-12-22 07:12:08,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:12:08,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2952 transitions. [2020-12-22 07:12:08,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:08,271 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:08,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:08,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:12:08,273 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:08,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:08,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1325493253, now seen corresponding path program 1 times [2020-12-22 07:12:08,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:08,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675539497] [2020-12-22 07:12:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:08,493 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 07:12:08,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675539497] [2020-12-22 07:12:08,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:08,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:12:08,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887764611] [2020-12-22 07:12:08,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:12:08,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:08,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:12:08,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:12:08,501 INFO L87 Difference]: Start difference. First operand 1985 states and 2952 transitions. Second operand 3 states. [2020-12-22 07:12:08,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:08,713 INFO L93 Difference]: Finished difference Result 5667 states and 8402 transitions. [2020-12-22 07:12:08,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:12:08,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-22 07:12:08,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:08,734 INFO L225 Difference]: With dead ends: 5667 [2020-12-22 07:12:08,735 INFO L226 Difference]: Without dead ends: 3700 [2020-12-22 07:12:08,740 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 07:12:08,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3700 states. [2020-12-22 07:12:08,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3700 to 3698. [2020-12-22 07:12:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:08,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5476 transitions. [2020-12-22 07:12:08,978 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5476 transitions. Word has length 171 [2020-12-22 07:12:08,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:08,986 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5476 transitions. [2020-12-22 07:12:08,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:12:08,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5476 transitions. [2020-12-22 07:12:08,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:08,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:08,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:08,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:12:08,989 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:08,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:08,989 INFO L82 PathProgramCache]: Analyzing trace with hash 962370689, now seen corresponding path program 1 times [2020-12-22 07:12:08,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:08,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075819911] [2020-12-22 07:12:08,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:09,144 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 07:12:09,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075819911] [2020-12-22 07:12:09,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:09,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:09,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908506132] [2020-12-22 07:12:09,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:09,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:09,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:09,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:09,149 INFO L87 Difference]: Start difference. First operand 3698 states and 5476 transitions. Second operand 4 states. [2020-12-22 07:12:09,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:09,528 INFO L93 Difference]: Finished difference Result 9091 states and 13445 transitions. [2020-12-22 07:12:09,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:09,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 07:12:09,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:09,558 INFO L225 Difference]: With dead ends: 9091 [2020-12-22 07:12:09,558 INFO L226 Difference]: Without dead ends: 5412 [2020-12-22 07:12:09,567 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 07:12:09,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5412 states. [2020-12-22 07:12:09,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5412 to 3698. [2020-12-22 07:12:09,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:09,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5473 transitions. [2020-12-22 07:12:09,824 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5473 transitions. Word has length 171 [2020-12-22 07:12:09,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:09,824 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5473 transitions. [2020-12-22 07:12:09,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:09,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5473 transitions. [2020-12-22 07:12:09,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:09,826 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:09,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:09,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:12:09,827 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:09,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:09,828 INFO L82 PathProgramCache]: Analyzing trace with hash -442820989, now seen corresponding path program 1 times [2020-12-22 07:12:09,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:09,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895274352] [2020-12-22 07:12:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:09,927 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 07:12:09,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895274352] [2020-12-22 07:12:09,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:09,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:09,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110381611] [2020-12-22 07:12:09,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:09,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:09,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:09,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:09,931 INFO L87 Difference]: Start difference. First operand 3698 states and 5473 transitions. Second operand 4 states. [2020-12-22 07:12:10,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:10,460 INFO L93 Difference]: Finished difference Result 9089 states and 13435 transitions. [2020-12-22 07:12:10,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:10,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 07:12:10,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:10,500 INFO L225 Difference]: With dead ends: 9089 [2020-12-22 07:12:10,500 INFO L226 Difference]: Without dead ends: 5411 [2020-12-22 07:12:10,507 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 07:12:10,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2020-12-22 07:12:10,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 3698. [2020-12-22 07:12:10,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5470 transitions. [2020-12-22 07:12:10,796 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5470 transitions. Word has length 171 [2020-12-22 07:12:10,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:10,797 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5470 transitions. [2020-12-22 07:12:10,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:10,797 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5470 transitions. [2020-12-22 07:12:10,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:10,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:10,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:10,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:12:10,801 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:10,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:10,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1451512897, now seen corresponding path program 1 times [2020-12-22 07:12:10,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:10,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757295151] [2020-12-22 07:12:10,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:10,920 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 07:12:10,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757295151] [2020-12-22 07:12:10,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:10,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:12:10,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413531877] [2020-12-22 07:12:10,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:12:10,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:10,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:12:10,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:12:10,923 INFO L87 Difference]: Start difference. First operand 3698 states and 5470 transitions. Second operand 3 states. [2020-12-22 07:12:11,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:11,168 INFO L93 Difference]: Finished difference Result 7374 states and 10904 transitions. [2020-12-22 07:12:11,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:12:11,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-22 07:12:11,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:11,189 INFO L225 Difference]: With dead ends: 7374 [2020-12-22 07:12:11,189 INFO L226 Difference]: Without dead ends: 3698 [2020-12-22 07:12:11,197 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 07:12:11,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2020-12-22 07:12:11,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3698. [2020-12-22 07:12:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:11,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5462 transitions. [2020-12-22 07:12:11,482 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5462 transitions. Word has length 171 [2020-12-22 07:12:11,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:11,482 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5462 transitions. [2020-12-22 07:12:11,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:12:11,483 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5462 transitions. [2020-12-22 07:12:11,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:11,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:11,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:11,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:12:11,485 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:11,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:11,491 INFO L82 PathProgramCache]: Analyzing trace with hash -501013827, now seen corresponding path program 1 times [2020-12-22 07:12:11,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:11,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279585725] [2020-12-22 07:12:11,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:11,571 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 07:12:11,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279585725] [2020-12-22 07:12:11,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:11,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:12:11,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634270030] [2020-12-22 07:12:11,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:12:11,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:11,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:12:11,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:12:11,575 INFO L87 Difference]: Start difference. First operand 3698 states and 5462 transitions. Second operand 3 states. [2020-12-22 07:12:11,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:11,820 INFO L93 Difference]: Finished difference Result 7373 states and 10887 transitions. [2020-12-22 07:12:11,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:12:11,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-22 07:12:11,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:11,858 INFO L225 Difference]: With dead ends: 7373 [2020-12-22 07:12:11,859 INFO L226 Difference]: Without dead ends: 3698 [2020-12-22 07:12:11,868 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 07:12:11,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2020-12-22 07:12:12,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3698. [2020-12-22 07:12:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5454 transitions. [2020-12-22 07:12:12,093 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5454 transitions. Word has length 171 [2020-12-22 07:12:12,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:12,093 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5454 transitions. [2020-12-22 07:12:12,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:12:12,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5454 transitions. [2020-12-22 07:12:12,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:12,096 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:12,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:12,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:12:12,096 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:12,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:12,097 INFO L82 PathProgramCache]: Analyzing trace with hash 544380097, now seen corresponding path program 1 times [2020-12-22 07:12:12,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:12,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275250352] [2020-12-22 07:12:12,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:12,218 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 07:12:12,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275250352] [2020-12-22 07:12:12,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:12,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:12,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756194926] [2020-12-22 07:12:12,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:12,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:12,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:12,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:12,221 INFO L87 Difference]: Start difference. First operand 3698 states and 5454 transitions. Second operand 4 states. [2020-12-22 07:12:12,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:12,622 INFO L93 Difference]: Finished difference Result 9081 states and 13379 transitions. [2020-12-22 07:12:12,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:12,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 07:12:12,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:12,636 INFO L225 Difference]: With dead ends: 9081 [2020-12-22 07:12:12,636 INFO L226 Difference]: Without dead ends: 5407 [2020-12-22 07:12:12,645 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 07:12:12,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5407 states. [2020-12-22 07:12:12,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5407 to 3698. [2020-12-22 07:12:12,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5451 transitions. [2020-12-22 07:12:12,888 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5451 transitions. Word has length 171 [2020-12-22 07:12:12,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:12,889 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5451 transitions. [2020-12-22 07:12:12,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:12,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5451 transitions. [2020-12-22 07:12:12,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:12,891 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:12,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:12,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:12:12,892 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:12,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:12,892 INFO L82 PathProgramCache]: Analyzing trace with hash 279732607, now seen corresponding path program 1 times [2020-12-22 07:12:12,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:12,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613847261] [2020-12-22 07:12:12,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:12,961 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 07:12:12,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613847261] [2020-12-22 07:12:12,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:12,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:12,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532208927] [2020-12-22 07:12:12,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:12,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:12,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:12,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:12,969 INFO L87 Difference]: Start difference. First operand 3698 states and 5451 transitions. Second operand 4 states. [2020-12-22 07:12:13,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:13,415 INFO L93 Difference]: Finished difference Result 9079 states and 13369 transitions. [2020-12-22 07:12:13,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:13,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 07:12:13,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:13,433 INFO L225 Difference]: With dead ends: 9079 [2020-12-22 07:12:13,433 INFO L226 Difference]: Without dead ends: 5406 [2020-12-22 07:12:13,442 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 07:12:13,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5406 states. [2020-12-22 07:12:13,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5406 to 3698. [2020-12-22 07:12:13,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:13,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5448 transitions. [2020-12-22 07:12:13,698 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5448 transitions. Word has length 171 [2020-12-22 07:12:13,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:13,698 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5448 transitions. [2020-12-22 07:12:13,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:13,698 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5448 transitions. [2020-12-22 07:12:13,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:13,700 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:13,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:13,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:12:13,701 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:13,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:13,702 INFO L82 PathProgramCache]: Analyzing trace with hash -2084109055, now seen corresponding path program 1 times [2020-12-22 07:12:13,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:13,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810295858] [2020-12-22 07:12:13,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:13,802 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 07:12:13,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810295858] [2020-12-22 07:12:13,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:13,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:13,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716068140] [2020-12-22 07:12:13,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:13,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:13,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:13,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:13,806 INFO L87 Difference]: Start difference. First operand 3698 states and 5448 transitions. Second operand 4 states. [2020-12-22 07:12:14,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:14,297 INFO L93 Difference]: Finished difference Result 9077 states and 13359 transitions. [2020-12-22 07:12:14,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:14,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 07:12:14,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:14,311 INFO L225 Difference]: With dead ends: 9077 [2020-12-22 07:12:14,311 INFO L226 Difference]: Without dead ends: 5405 [2020-12-22 07:12:14,320 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 07:12:14,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5405 states. [2020-12-22 07:12:14,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5405 to 3698. [2020-12-22 07:12:14,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:14,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5445 transitions. [2020-12-22 07:12:14,614 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5445 transitions. Word has length 171 [2020-12-22 07:12:14,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:14,614 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5445 transitions. [2020-12-22 07:12:14,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:14,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5445 transitions. [2020-12-22 07:12:14,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:14,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:14,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:14,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:12:14,617 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:14,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:14,618 INFO L82 PathProgramCache]: Analyzing trace with hash 887679295, now seen corresponding path program 1 times [2020-12-22 07:12:14,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:14,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932331168] [2020-12-22 07:12:14,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:14,687 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 07:12:14,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932331168] [2020-12-22 07:12:14,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:14,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:14,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635573066] [2020-12-22 07:12:14,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:14,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:14,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:14,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:14,691 INFO L87 Difference]: Start difference. First operand 3698 states and 5445 transitions. Second operand 4 states. [2020-12-22 07:12:15,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:15,111 INFO L93 Difference]: Finished difference Result 9075 states and 13349 transitions. [2020-12-22 07:12:15,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:15,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 07:12:15,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:15,127 INFO L225 Difference]: With dead ends: 9075 [2020-12-22 07:12:15,128 INFO L226 Difference]: Without dead ends: 5404 [2020-12-22 07:12:15,136 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 07:12:15,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2020-12-22 07:12:15,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 3698. [2020-12-22 07:12:15,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:15,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5442 transitions. [2020-12-22 07:12:15,392 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5442 transitions. Word has length 171 [2020-12-22 07:12:15,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:15,393 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5442 transitions. [2020-12-22 07:12:15,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:15,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5442 transitions. [2020-12-22 07:12:15,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:15,395 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:15,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:15,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:12:15,396 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:15,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:15,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1510308543, now seen corresponding path program 1 times [2020-12-22 07:12:15,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:15,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774571144] [2020-12-22 07:12:15,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:12:15,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774571144] [2020-12-22 07:12:15,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:15,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:12:15,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059357263] [2020-12-22 07:12:15,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:12:15,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:15,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:12:15,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:12:15,498 INFO L87 Difference]: Start difference. First operand 3698 states and 5442 transitions. Second operand 3 states. [2020-12-22 07:12:15,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:15,710 INFO L93 Difference]: Finished difference Result 7368 states and 10842 transitions. [2020-12-22 07:12:15,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:12:15,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-22 07:12:15,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:15,720 INFO L225 Difference]: With dead ends: 7368 [2020-12-22 07:12:15,720 INFO L226 Difference]: Without dead ends: 3698 [2020-12-22 07:12:15,728 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 07:12:15,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2020-12-22 07:12:15,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3698. [2020-12-22 07:12:15,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:16,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5434 transitions. [2020-12-22 07:12:16,002 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5434 transitions. Word has length 171 [2020-12-22 07:12:16,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:16,003 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5434 transitions. [2020-12-22 07:12:16,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:12:16,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5434 transitions. [2020-12-22 07:12:16,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:16,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:16,006 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:16,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:12:16,006 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:16,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:16,007 INFO L82 PathProgramCache]: Analyzing trace with hash -897261379, now seen corresponding path program 1 times [2020-12-22 07:12:16,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:16,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229438119] [2020-12-22 07:12:16,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:16,082 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 07:12:16,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229438119] [2020-12-22 07:12:16,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:16,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:16,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082760569] [2020-12-22 07:12:16,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:16,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:16,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:16,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:16,085 INFO L87 Difference]: Start difference. First operand 3698 states and 5434 transitions. Second operand 4 states. [2020-12-22 07:12:16,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:16,481 INFO L93 Difference]: Finished difference Result 9069 states and 13314 transitions. [2020-12-22 07:12:16,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:16,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 07:12:16,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:16,494 INFO L225 Difference]: With dead ends: 9069 [2020-12-22 07:12:16,494 INFO L226 Difference]: Without dead ends: 5401 [2020-12-22 07:12:16,506 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 07:12:16,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5401 states. [2020-12-22 07:12:16,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5401 to 3698. [2020-12-22 07:12:16,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:16,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5431 transitions. [2020-12-22 07:12:16,805 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5431 transitions. Word has length 171 [2020-12-22 07:12:16,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:16,806 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5431 transitions. [2020-12-22 07:12:16,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:16,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5431 transitions. [2020-12-22 07:12:16,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:16,808 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:16,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:16,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:12:16,809 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:16,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:16,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1437690885, now seen corresponding path program 1 times [2020-12-22 07:12:16,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:16,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899048155] [2020-12-22 07:12:16,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:16,872 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 07:12:16,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899048155] [2020-12-22 07:12:16,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:16,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:12:16,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223407752] [2020-12-22 07:12:16,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:12:16,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:16,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:12:16,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:12:16,875 INFO L87 Difference]: Start difference. First operand 3698 states and 5431 transitions. Second operand 3 states. [2020-12-22 07:12:17,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:17,087 INFO L93 Difference]: Finished difference Result 7365 states and 10816 transitions. [2020-12-22 07:12:17,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:12:17,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-22 07:12:17,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:17,096 INFO L225 Difference]: With dead ends: 7365 [2020-12-22 07:12:17,096 INFO L226 Difference]: Without dead ends: 3698 [2020-12-22 07:12:17,104 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 07:12:17,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2020-12-22 07:12:17,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3698. [2020-12-22 07:12:17,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:17,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5423 transitions. [2020-12-22 07:12:17,331 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5423 transitions. Word has length 171 [2020-12-22 07:12:17,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:17,332 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5423 transitions. [2020-12-22 07:12:17,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:12:17,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5423 transitions. [2020-12-22 07:12:17,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:17,334 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:17,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:17,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:12:17,335 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:17,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:17,335 INFO L82 PathProgramCache]: Analyzing trace with hash -207468033, now seen corresponding path program 1 times [2020-12-22 07:12:17,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:17,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167326042] [2020-12-22 07:12:17,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:17,403 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 07:12:17,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167326042] [2020-12-22 07:12:17,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:17,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:17,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780294887] [2020-12-22 07:12:17,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:17,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:17,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:17,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:17,405 INFO L87 Difference]: Start difference. First operand 3698 states and 5423 transitions. Second operand 4 states. [2020-12-22 07:12:18,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:18,005 INFO L93 Difference]: Finished difference Result 8967 states and 13143 transitions. [2020-12-22 07:12:18,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:18,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 07:12:18,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:18,017 INFO L225 Difference]: With dead ends: 8967 [2020-12-22 07:12:18,018 INFO L226 Difference]: Without dead ends: 5301 [2020-12-22 07:12:18,028 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 07:12:18,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2020-12-22 07:12:18,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 3698. [2020-12-22 07:12:18,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:18,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5420 transitions. [2020-12-22 07:12:18,328 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5420 transitions. Word has length 171 [2020-12-22 07:12:18,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:18,329 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5420 transitions. [2020-12-22 07:12:18,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:18,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5420 transitions. [2020-12-22 07:12:18,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:18,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:18,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:18,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:12:18,332 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:18,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:18,332 INFO L82 PathProgramCache]: Analyzing trace with hash 203142333, now seen corresponding path program 1 times [2020-12-22 07:12:18,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:18,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376731444] [2020-12-22 07:12:18,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:18,408 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 07:12:18,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376731444] [2020-12-22 07:12:18,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:18,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:18,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574169124] [2020-12-22 07:12:18,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:18,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:18,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:18,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:18,412 INFO L87 Difference]: Start difference. First operand 3698 states and 5420 transitions. Second operand 4 states. [2020-12-22 07:12:18,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:18,967 INFO L93 Difference]: Finished difference Result 8965 states and 13133 transitions. [2020-12-22 07:12:18,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:18,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 07:12:18,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:18,978 INFO L225 Difference]: With dead ends: 8965 [2020-12-22 07:12:18,978 INFO L226 Difference]: Without dead ends: 5300 [2020-12-22 07:12:18,984 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 07:12:18,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5300 states. [2020-12-22 07:12:19,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5300 to 3698. [2020-12-22 07:12:19,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:19,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5417 transitions. [2020-12-22 07:12:19,233 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5417 transitions. Word has length 171 [2020-12-22 07:12:19,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:19,234 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5417 transitions. [2020-12-22 07:12:19,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:19,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5417 transitions. [2020-12-22 07:12:19,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:19,236 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:19,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:19,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:12:19,236 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:19,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:19,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1584727489, now seen corresponding path program 1 times [2020-12-22 07:12:19,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:19,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602373955] [2020-12-22 07:12:19,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:19,303 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 07:12:19,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602373955] [2020-12-22 07:12:19,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:19,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:12:19,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336808827] [2020-12-22 07:12:19,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:12:19,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:19,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:12:19,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:12:19,306 INFO L87 Difference]: Start difference. First operand 3698 states and 5417 transitions. Second operand 3 states. [2020-12-22 07:12:19,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:19,595 INFO L93 Difference]: Finished difference Result 7362 states and 10785 transitions. [2020-12-22 07:12:19,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:12:19,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-22 07:12:19,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:19,604 INFO L225 Difference]: With dead ends: 7362 [2020-12-22 07:12:19,604 INFO L226 Difference]: Without dead ends: 3698 [2020-12-22 07:12:19,611 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 07:12:19,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2020-12-22 07:12:19,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3698. [2020-12-22 07:12:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5379 transitions. [2020-12-22 07:12:19,870 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5379 transitions. Word has length 171 [2020-12-22 07:12:19,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:19,870 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5379 transitions. [2020-12-22 07:12:19,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:12:19,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5379 transitions. [2020-12-22 07:12:19,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:19,873 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:19,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:19,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:12:19,874 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:19,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:19,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1653021692, now seen corresponding path program 1 times [2020-12-22 07:12:19,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:19,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549134811] [2020-12-22 07:12:19,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:19,950 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 07:12:19,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549134811] [2020-12-22 07:12:19,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:19,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:19,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870640467] [2020-12-22 07:12:19,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:19,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:19,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:19,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:19,957 INFO L87 Difference]: Start difference. First operand 3698 states and 5379 transitions. Second operand 4 states. [2020-12-22 07:12:20,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:20,473 INFO L93 Difference]: Finished difference Result 8961 states and 13029 transitions. [2020-12-22 07:12:20,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:20,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 07:12:20,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:20,484 INFO L225 Difference]: With dead ends: 8961 [2020-12-22 07:12:20,484 INFO L226 Difference]: Without dead ends: 5298 [2020-12-22 07:12:20,491 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 07:12:20,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5298 states. [2020-12-22 07:12:20,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5298 to 3698. [2020-12-22 07:12:20,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:20,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5376 transitions. [2020-12-22 07:12:20,753 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5376 transitions. Word has length 171 [2020-12-22 07:12:20,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:20,754 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5376 transitions. [2020-12-22 07:12:20,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:20,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5376 transitions. [2020-12-22 07:12:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:20,756 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:20,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:20,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:12:20,756 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:20,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1722669566, now seen corresponding path program 1 times [2020-12-22 07:12:20,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:20,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953022370] [2020-12-22 07:12:20,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:20,820 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 07:12:20,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953022370] [2020-12-22 07:12:20,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:20,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:20,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15727180] [2020-12-22 07:12:20,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:20,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:20,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:20,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:20,823 INFO L87 Difference]: Start difference. First operand 3698 states and 5376 transitions. Second operand 4 states. [2020-12-22 07:12:21,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:21,348 INFO L93 Difference]: Finished difference Result 8959 states and 13019 transitions. [2020-12-22 07:12:21,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:21,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 07:12:21,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:21,357 INFO L225 Difference]: With dead ends: 8959 [2020-12-22 07:12:21,357 INFO L226 Difference]: Without dead ends: 5297 [2020-12-22 07:12:21,362 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 07:12:21,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5297 states. [2020-12-22 07:12:21,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5297 to 3698. [2020-12-22 07:12:21,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:21,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5373 transitions. [2020-12-22 07:12:21,644 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5373 transitions. Word has length 171 [2020-12-22 07:12:21,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:21,645 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5373 transitions. [2020-12-22 07:12:21,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:21,645 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5373 transitions. [2020-12-22 07:12:21,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:21,647 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:21,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:21,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 07:12:21,648 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:21,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:21,648 INFO L82 PathProgramCache]: Analyzing trace with hash 2140558268, now seen corresponding path program 1 times [2020-12-22 07:12:21,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:21,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901819195] [2020-12-22 07:12:21,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:21,738 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 07:12:21,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901819195] [2020-12-22 07:12:21,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:21,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:21,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361977849] [2020-12-22 07:12:21,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:21,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:21,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:21,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:21,740 INFO L87 Difference]: Start difference. First operand 3698 states and 5373 transitions. Second operand 4 states. [2020-12-22 07:12:22,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:22,259 INFO L93 Difference]: Finished difference Result 8955 states and 13005 transitions. [2020-12-22 07:12:22,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:22,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 07:12:22,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:22,270 INFO L225 Difference]: With dead ends: 8955 [2020-12-22 07:12:22,270 INFO L226 Difference]: Without dead ends: 5295 [2020-12-22 07:12:22,275 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 07:12:22,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5295 states. [2020-12-22 07:12:22,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5295 to 3698. [2020-12-22 07:12:22,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:22,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5370 transitions. [2020-12-22 07:12:22,618 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5370 transitions. Word has length 171 [2020-12-22 07:12:22,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:22,618 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5370 transitions. [2020-12-22 07:12:22,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5370 transitions. [2020-12-22 07:12:22,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:22,619 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:22,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:22,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 07:12:22,620 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:22,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:22,621 INFO L82 PathProgramCache]: Analyzing trace with hash 523117818, now seen corresponding path program 1 times [2020-12-22 07:12:22,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:22,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228194164] [2020-12-22 07:12:22,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:22,690 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 07:12:22,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228194164] [2020-12-22 07:12:22,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:22,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:22,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581587473] [2020-12-22 07:12:22,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:22,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:22,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:22,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:22,692 INFO L87 Difference]: Start difference. First operand 3698 states and 5370 transitions. Second operand 4 states. [2020-12-22 07:12:23,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:23,149 INFO L93 Difference]: Finished difference Result 8953 states and 12995 transitions. [2020-12-22 07:12:23,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:23,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 07:12:23,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:23,158 INFO L225 Difference]: With dead ends: 8953 [2020-12-22 07:12:23,159 INFO L226 Difference]: Without dead ends: 5294 [2020-12-22 07:12:23,164 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 07:12:23,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5294 states. [2020-12-22 07:12:23,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5294 to 3698. [2020-12-22 07:12:23,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5367 transitions. [2020-12-22 07:12:23,503 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5367 transitions. Word has length 171 [2020-12-22 07:12:23,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:23,503 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5367 transitions. [2020-12-22 07:12:23,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:23,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5367 transitions. [2020-12-22 07:12:23,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:23,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:23,504 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:23,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 07:12:23,505 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:23,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:23,505 INFO L82 PathProgramCache]: Analyzing trace with hash 886584316, now seen corresponding path program 1 times [2020-12-22 07:12:23,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:23,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368692732] [2020-12-22 07:12:23,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:23,566 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 07:12:23,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368692732] [2020-12-22 07:12:23,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:23,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:23,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433374381] [2020-12-22 07:12:23,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:23,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:23,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:23,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:23,572 INFO L87 Difference]: Start difference. First operand 3698 states and 5367 transitions. Second operand 4 states. [2020-12-22 07:12:24,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:24,034 INFO L93 Difference]: Finished difference Result 8951 states and 12985 transitions. [2020-12-22 07:12:24,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:24,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 07:12:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:24,044 INFO L225 Difference]: With dead ends: 8951 [2020-12-22 07:12:24,044 INFO L226 Difference]: Without dead ends: 5293 [2020-12-22 07:12:24,049 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 07:12:24,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5293 states. [2020-12-22 07:12:24,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5293 to 3698. [2020-12-22 07:12:24,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:24,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5364 transitions. [2020-12-22 07:12:24,343 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5364 transitions. Word has length 171 [2020-12-22 07:12:24,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:24,343 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5364 transitions. [2020-12-22 07:12:24,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:24,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5364 transitions. [2020-12-22 07:12:24,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:24,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:24,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:24,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 07:12:24,345 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:24,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:24,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1175403706, now seen corresponding path program 1 times [2020-12-22 07:12:24,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:24,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399137132] [2020-12-22 07:12:24,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:24,405 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 07:12:24,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399137132] [2020-12-22 07:12:24,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:24,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:24,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082323723] [2020-12-22 07:12:24,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:24,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:24,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:24,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:24,407 INFO L87 Difference]: Start difference. First operand 3698 states and 5364 transitions. Second operand 4 states. [2020-12-22 07:12:25,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:25,003 INFO L93 Difference]: Finished difference Result 8949 states and 12975 transitions. [2020-12-22 07:12:25,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:25,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 07:12:25,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:25,010 INFO L225 Difference]: With dead ends: 8949 [2020-12-22 07:12:25,010 INFO L226 Difference]: Without dead ends: 5292 [2020-12-22 07:12:25,015 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 07:12:25,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5292 states. [2020-12-22 07:12:25,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5292 to 3698. [2020-12-22 07:12:25,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:25,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5361 transitions. [2020-12-22 07:12:25,325 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5361 transitions. Word has length 171 [2020-12-22 07:12:25,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:25,325 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5361 transitions. [2020-12-22 07:12:25,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:25,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5361 transitions. [2020-12-22 07:12:25,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:25,327 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:25,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:25,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 07:12:25,327 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:25,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:25,328 INFO L82 PathProgramCache]: Analyzing trace with hash 630531132, now seen corresponding path program 1 times [2020-12-22 07:12:25,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:25,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663021131] [2020-12-22 07:12:25,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:25,387 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 07:12:25,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663021131] [2020-12-22 07:12:25,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:25,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:25,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695622254] [2020-12-22 07:12:25,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:25,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:25,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:25,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:25,390 INFO L87 Difference]: Start difference. First operand 3698 states and 5361 transitions. Second operand 4 states. [2020-12-22 07:12:25,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:25,933 INFO L93 Difference]: Finished difference Result 8947 states and 12965 transitions. [2020-12-22 07:12:25,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:25,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 07:12:25,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:25,938 INFO L225 Difference]: With dead ends: 8947 [2020-12-22 07:12:25,938 INFO L226 Difference]: Without dead ends: 5291 [2020-12-22 07:12:25,941 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 07:12:25,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5291 states. [2020-12-22 07:12:26,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5291 to 3698. [2020-12-22 07:12:26,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:26,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5358 transitions. [2020-12-22 07:12:26,188 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5358 transitions. Word has length 171 [2020-12-22 07:12:26,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:26,188 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5358 transitions. [2020-12-22 07:12:26,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:26,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5358 transitions. [2020-12-22 07:12:26,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:26,189 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:26,189 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:26,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 07:12:26,190 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:26,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:26,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1305691258, now seen corresponding path program 1 times [2020-12-22 07:12:26,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:26,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493989084] [2020-12-22 07:12:26,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:26,252 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 07:12:26,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493989084] [2020-12-22 07:12:26,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:26,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:26,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358272159] [2020-12-22 07:12:26,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:26,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:26,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:26,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:26,254 INFO L87 Difference]: Start difference. First operand 3698 states and 5358 transitions. Second operand 4 states. [2020-12-22 07:12:26,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:26,772 INFO L93 Difference]: Finished difference Result 8945 states and 12955 transitions. [2020-12-22 07:12:26,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:26,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 07:12:26,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:26,778 INFO L225 Difference]: With dead ends: 8945 [2020-12-22 07:12:26,778 INFO L226 Difference]: Without dead ends: 5290 [2020-12-22 07:12:26,781 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 07:12:26,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5290 states. [2020-12-22 07:12:27,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5290 to 3698. [2020-12-22 07:12:27,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:27,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5355 transitions. [2020-12-22 07:12:27,082 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5355 transitions. Word has length 171 [2020-12-22 07:12:27,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:27,083 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5355 transitions. [2020-12-22 07:12:27,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:27,083 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5355 transitions. [2020-12-22 07:12:27,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:27,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:27,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:27,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 07:12:27,084 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:27,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:27,085 INFO L82 PathProgramCache]: Analyzing trace with hash 357639292, now seen corresponding path program 1 times [2020-12-22 07:12:27,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:27,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608661974] [2020-12-22 07:12:27,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:27,147 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 07:12:27,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608661974] [2020-12-22 07:12:27,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:27,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:12:27,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018508141] [2020-12-22 07:12:27,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:12:27,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:27,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:12:27,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:12:27,149 INFO L87 Difference]: Start difference. First operand 3698 states and 5355 transitions. Second operand 3 states. [2020-12-22 07:12:27,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:27,454 INFO L93 Difference]: Finished difference Result 7352 states and 10650 transitions. [2020-12-22 07:12:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:12:27,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-22 07:12:27,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:27,458 INFO L225 Difference]: With dead ends: 7352 [2020-12-22 07:12:27,458 INFO L226 Difference]: Without dead ends: 3698 [2020-12-22 07:12:27,463 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 07:12:27,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2020-12-22 07:12:27,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3698. [2020-12-22 07:12:27,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-12-22 07:12:27,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5317 transitions. [2020-12-22 07:12:27,727 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5317 transitions. Word has length 171 [2020-12-22 07:12:27,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:27,728 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5317 transitions. [2020-12-22 07:12:27,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:12:27,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5317 transitions. [2020-12-22 07:12:27,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 07:12:27,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:27,728 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:27,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 07:12:27,729 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:27,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:27,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1248200712, now seen corresponding path program 1 times [2020-12-22 07:12:27,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:27,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689300189] [2020-12-22 07:12:27,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:27,795 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 07:12:27,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689300189] [2020-12-22 07:12:27,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:27,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:12:27,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800995075] [2020-12-22 07:12:27,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:12:27,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:27,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:12:27,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:12:27,798 INFO L87 Difference]: Start difference. First operand 3698 states and 5317 transitions. Second operand 3 states. [2020-12-22 07:12:28,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:28,546 INFO L93 Difference]: Finished difference Result 10838 states and 15566 transitions. [2020-12-22 07:12:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:12:28,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-22 07:12:28,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:28,553 INFO L225 Difference]: With dead ends: 10838 [2020-12-22 07:12:28,553 INFO L226 Difference]: Without dead ends: 7187 [2020-12-22 07:12:28,558 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 07:12:28,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7187 states. [2020-12-22 07:12:29,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7187 to 6995. [2020-12-22 07:12:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6995 states. [2020-12-22 07:12:29,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6995 states to 6995 states and 10011 transitions. [2020-12-22 07:12:29,015 INFO L78 Accepts]: Start accepts. Automaton has 6995 states and 10011 transitions. Word has length 171 [2020-12-22 07:12:29,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:29,015 INFO L481 AbstractCegarLoop]: Abstraction has 6995 states and 10011 transitions. [2020-12-22 07:12:29,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:12:29,015 INFO L276 IsEmpty]: Start isEmpty. Operand 6995 states and 10011 transitions. [2020-12-22 07:12:29,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-12-22 07:12:29,021 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:29,021 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:29,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 07:12:29,021 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:29,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:29,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1031873080, now seen corresponding path program 1 times [2020-12-22 07:12:29,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:29,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869504749] [2020-12-22 07:12:29,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:29,201 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:12:29,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869504749] [2020-12-22 07:12:29,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:29,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:12:29,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556033388] [2020-12-22 07:12:29,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:12:29,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:29,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:12:29,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:12:29,203 INFO L87 Difference]: Start difference. First operand 6995 states and 10011 transitions. Second operand 5 states. [2020-12-22 07:12:30,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:30,824 INFO L93 Difference]: Finished difference Result 20722 states and 29666 transitions. [2020-12-22 07:12:30,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:12:30,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 279 [2020-12-22 07:12:30,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:30,835 INFO L225 Difference]: With dead ends: 20722 [2020-12-22 07:12:30,836 INFO L226 Difference]: Without dead ends: 13778 [2020-12-22 07:12:30,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 07:12:30,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13778 states. [2020-12-22 07:12:31,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13778 to 7088. [2020-12-22 07:12:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7088 states. [2020-12-22 07:12:31,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7088 states to 7088 states and 10074 transitions. [2020-12-22 07:12:31,364 INFO L78 Accepts]: Start accepts. Automaton has 7088 states and 10074 transitions. Word has length 279 [2020-12-22 07:12:31,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:31,364 INFO L481 AbstractCegarLoop]: Abstraction has 7088 states and 10074 transitions. [2020-12-22 07:12:31,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:12:31,364 INFO L276 IsEmpty]: Start isEmpty. Operand 7088 states and 10074 transitions. [2020-12-22 07:12:31,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-12-22 07:12:31,370 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:31,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:31,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 07:12:31,370 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:31,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:31,371 INFO L82 PathProgramCache]: Analyzing trace with hash -2102224180, now seen corresponding path program 1 times [2020-12-22 07:12:31,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:31,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352647344] [2020-12-22 07:12:31,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:12:31,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352647344] [2020-12-22 07:12:31,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:31,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:12:31,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045003583] [2020-12-22 07:12:31,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:12:31,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:31,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:12:31,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:12:31,474 INFO L87 Difference]: Start difference. First operand 7088 states and 10074 transitions. Second operand 5 states. [2020-12-22 07:12:32,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:32,517 INFO L93 Difference]: Finished difference Result 16803 states and 23876 transitions. [2020-12-22 07:12:32,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:12:32,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 279 [2020-12-22 07:12:32,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:32,526 INFO L225 Difference]: With dead ends: 16803 [2020-12-22 07:12:32,527 INFO L226 Difference]: Without dead ends: 9780 [2020-12-22 07:12:32,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 07:12:32,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9780 states. [2020-12-22 07:12:33,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9780 to 7100. [2020-12-22 07:12:33,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7100 states. [2020-12-22 07:12:33,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7100 states to 7100 states and 10029 transitions. [2020-12-22 07:12:33,230 INFO L78 Accepts]: Start accepts. Automaton has 7100 states and 10029 transitions. Word has length 279 [2020-12-22 07:12:33,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:33,231 INFO L481 AbstractCegarLoop]: Abstraction has 7100 states and 10029 transitions. [2020-12-22 07:12:33,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:12:33,231 INFO L276 IsEmpty]: Start isEmpty. Operand 7100 states and 10029 transitions. [2020-12-22 07:12:33,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-12-22 07:12:33,237 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:33,238 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:33,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 07:12:33,238 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:33,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:33,239 INFO L82 PathProgramCache]: Analyzing trace with hash -453591600, now seen corresponding path program 1 times [2020-12-22 07:12:33,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:33,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291204811] [2020-12-22 07:12:33,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:33,387 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:12:33,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291204811] [2020-12-22 07:12:33,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:33,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:12:33,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15613867] [2020-12-22 07:12:33,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:12:33,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:33,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:12:33,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:12:33,390 INFO L87 Difference]: Start difference. First operand 7100 states and 10029 transitions. Second operand 5 states. [2020-12-22 07:12:35,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:35,294 INFO L93 Difference]: Finished difference Result 26309 states and 37316 transitions. [2020-12-22 07:12:35,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:12:35,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 279 [2020-12-22 07:12:35,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:35,312 INFO L225 Difference]: With dead ends: 26309 [2020-12-22 07:12:35,312 INFO L226 Difference]: Without dead ends: 19281 [2020-12-22 07:12:35,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 07:12:35,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19281 states. [2020-12-22 07:12:36,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19281 to 7283. [2020-12-22 07:12:36,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7283 states. [2020-12-22 07:12:36,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7283 states to 7283 states and 10212 transitions. [2020-12-22 07:12:36,193 INFO L78 Accepts]: Start accepts. Automaton has 7283 states and 10212 transitions. Word has length 279 [2020-12-22 07:12:36,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:36,193 INFO L481 AbstractCegarLoop]: Abstraction has 7283 states and 10212 transitions. [2020-12-22 07:12:36,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:12:36,193 INFO L276 IsEmpty]: Start isEmpty. Operand 7283 states and 10212 transitions. [2020-12-22 07:12:36,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-12-22 07:12:36,197 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:36,197 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:36,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 07:12:36,198 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:36,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:36,198 INFO L82 PathProgramCache]: Analyzing trace with hash -323727022, now seen corresponding path program 1 times [2020-12-22 07:12:36,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:36,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314661816] [2020-12-22 07:12:36,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:12:36,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314661816] [2020-12-22 07:12:36,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:36,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:36,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014362572] [2020-12-22 07:12:36,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:36,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:36,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:36,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:36,314 INFO L87 Difference]: Start difference. First operand 7283 states and 10212 transitions. Second operand 4 states. [2020-12-22 07:12:38,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:38,143 INFO L93 Difference]: Finished difference Result 24760 states and 34665 transitions. [2020-12-22 07:12:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:38,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 279 [2020-12-22 07:12:38,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:38,160 INFO L225 Difference]: With dead ends: 24760 [2020-12-22 07:12:38,160 INFO L226 Difference]: Without dead ends: 17554 [2020-12-22 07:12:38,168 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 07:12:38,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17554 states. [2020-12-22 07:12:39,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17554 to 13914. [2020-12-22 07:12:39,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13914 states. [2020-12-22 07:12:39,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13914 states to 13914 states and 19432 transitions. [2020-12-22 07:12:39,615 INFO L78 Accepts]: Start accepts. Automaton has 13914 states and 19432 transitions. Word has length 279 [2020-12-22 07:12:39,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:39,615 INFO L481 AbstractCegarLoop]: Abstraction has 13914 states and 19432 transitions. [2020-12-22 07:12:39,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:39,615 INFO L276 IsEmpty]: Start isEmpty. Operand 13914 states and 19432 transitions. [2020-12-22 07:12:39,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-12-22 07:12:39,621 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:39,621 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:39,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 07:12:39,622 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:39,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:39,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1100677485, now seen corresponding path program 1 times [2020-12-22 07:12:39,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:39,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962194542] [2020-12-22 07:12:39,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:39,723 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:12:39,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962194542] [2020-12-22 07:12:39,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:39,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:12:39,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125810016] [2020-12-22 07:12:39,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:12:39,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:39,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:12:39,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:12:39,725 INFO L87 Difference]: Start difference. First operand 13914 states and 19432 transitions. Second operand 5 states. [2020-12-22 07:12:42,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:42,267 INFO L93 Difference]: Finished difference Result 39489 states and 55392 transitions. [2020-12-22 07:12:42,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:12:42,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 279 [2020-12-22 07:12:42,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:42,290 INFO L225 Difference]: With dead ends: 39489 [2020-12-22 07:12:42,291 INFO L226 Difference]: Without dead ends: 25656 [2020-12-22 07:12:42,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 07:12:42,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25656 states. [2020-12-22 07:12:43,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25656 to 14094. [2020-12-22 07:12:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14094 states. [2020-12-22 07:12:43,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14094 states to 14094 states and 19555 transitions. [2020-12-22 07:12:43,728 INFO L78 Accepts]: Start accepts. Automaton has 14094 states and 19555 transitions. Word has length 279 [2020-12-22 07:12:43,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:43,729 INFO L481 AbstractCegarLoop]: Abstraction has 14094 states and 19555 transitions. [2020-12-22 07:12:43,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:12:43,729 INFO L276 IsEmpty]: Start isEmpty. Operand 14094 states and 19555 transitions. [2020-12-22 07:12:43,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-12-22 07:12:43,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:43,737 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:43,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 07:12:43,737 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:43,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:43,737 INFO L82 PathProgramCache]: Analyzing trace with hash 2058345365, now seen corresponding path program 1 times [2020-12-22 07:12:43,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:43,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456312872] [2020-12-22 07:12:43,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:43,840 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:12:43,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456312872] [2020-12-22 07:12:43,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:43,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:12:43,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661697216] [2020-12-22 07:12:43,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:12:43,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:43,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:12:43,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:12:43,842 INFO L87 Difference]: Start difference. First operand 14094 states and 19555 transitions. Second operand 5 states. [2020-12-22 07:12:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:47,687 INFO L93 Difference]: Finished difference Result 50387 states and 70386 transitions. [2020-12-22 07:12:47,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:12:47,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 279 [2020-12-22 07:12:47,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:47,719 INFO L225 Difference]: With dead ends: 50387 [2020-12-22 07:12:47,719 INFO L226 Difference]: Without dead ends: 36381 [2020-12-22 07:12:47,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 07:12:47,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36381 states. [2020-12-22 07:12:49,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36381 to 14445. [2020-12-22 07:12:49,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14445 states. [2020-12-22 07:12:49,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14445 states to 14445 states and 19906 transitions. [2020-12-22 07:12:49,363 INFO L78 Accepts]: Start accepts. Automaton has 14445 states and 19906 transitions. Word has length 279 [2020-12-22 07:12:49,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:49,363 INFO L481 AbstractCegarLoop]: Abstraction has 14445 states and 19906 transitions. [2020-12-22 07:12:49,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:12:49,364 INFO L276 IsEmpty]: Start isEmpty. Operand 14445 states and 19906 transitions. [2020-12-22 07:12:49,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-12-22 07:12:49,372 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:49,372 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:49,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 07:12:49,373 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:49,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:49,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1952636393, now seen corresponding path program 1 times [2020-12-22 07:12:49,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:49,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599648116] [2020-12-22 07:12:49,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:49,503 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:12:49,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599648116] [2020-12-22 07:12:49,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:49,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:12:49,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150749888] [2020-12-22 07:12:49,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:12:49,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:49,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:12:49,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:12:49,505 INFO L87 Difference]: Start difference. First operand 14445 states and 19906 transitions. Second operand 3 states. [2020-12-22 07:12:52,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:52,694 INFO L93 Difference]: Finished difference Result 42102 states and 57991 transitions. [2020-12-22 07:12:52,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:12:52,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 279 [2020-12-22 07:12:52,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:52,721 INFO L225 Difference]: With dead ends: 42102 [2020-12-22 07:12:52,721 INFO L226 Difference]: Without dead ends: 27750 [2020-12-22 07:12:52,736 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 07:12:52,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27750 states. [2020-12-22 07:12:55,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27750 to 27732. [2020-12-22 07:12:55,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27732 states. [2020-12-22 07:12:55,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27732 states to 27732 states and 38071 transitions. [2020-12-22 07:12:55,655 INFO L78 Accepts]: Start accepts. Automaton has 27732 states and 38071 transitions. Word has length 279 [2020-12-22 07:12:55,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:55,656 INFO L481 AbstractCegarLoop]: Abstraction has 27732 states and 38071 transitions. [2020-12-22 07:12:55,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:12:55,656 INFO L276 IsEmpty]: Start isEmpty. Operand 27732 states and 38071 transitions. [2020-12-22 07:12:55,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-12-22 07:12:55,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:55,667 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:55,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 07:12:55,667 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:55,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:55,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1056893144, now seen corresponding path program 1 times [2020-12-22 07:12:55,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:55,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947881705] [2020-12-22 07:12:55,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:55,883 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:12:55,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947881705] [2020-12-22 07:12:55,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:55,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:12:55,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766896864] [2020-12-22 07:12:55,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:12:55,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:55,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:12:55,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:12:55,886 INFO L87 Difference]: Start difference. First operand 27732 states and 38071 transitions. Second operand 5 states. [2020-12-22 07:13:01,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:13:01,440 INFO L93 Difference]: Finished difference Result 77019 states and 106336 transitions. [2020-12-22 07:13:01,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:13:01,441 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 279 [2020-12-22 07:13:01,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:13:01,491 INFO L225 Difference]: With dead ends: 77019 [2020-12-22 07:13:01,491 INFO L226 Difference]: Without dead ends: 49384 [2020-12-22 07:13:01,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 07:13:01,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49384 states. [2020-12-22 07:13:05,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49384 to 28080. [2020-12-22 07:13:05,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28080 states. [2020-12-22 07:13:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28080 states to 28080 states and 38310 transitions. [2020-12-22 07:13:05,215 INFO L78 Accepts]: Start accepts. Automaton has 28080 states and 38310 transitions. Word has length 279 [2020-12-22 07:13:05,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:13:05,215 INFO L481 AbstractCegarLoop]: Abstraction has 28080 states and 38310 transitions. [2020-12-22 07:13:05,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:13:05,215 INFO L276 IsEmpty]: Start isEmpty. Operand 28080 states and 38310 transitions. [2020-12-22 07:13:05,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-12-22 07:13:05,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:13:05,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:13:05,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 07:13:05,228 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:13:05,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:13:05,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1516316708, now seen corresponding path program 1 times [2020-12-22 07:13:05,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:13:05,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869538970] [2020-12-22 07:13:05,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:13:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:13:05,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:13:05,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869538970] [2020-12-22 07:13:05,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:13:05,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:13:05,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899152941] [2020-12-22 07:13:05,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:13:05,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:13:05,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:13:05,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:13:05,338 INFO L87 Difference]: Start difference. First operand 28080 states and 38310 transitions. Second operand 4 states. [2020-12-22 07:13:13,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:13:13,256 INFO L93 Difference]: Finished difference Result 95954 states and 130733 transitions. [2020-12-22 07:13:13,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:13:13,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 279 [2020-12-22 07:13:13,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:13:13,323 INFO L225 Difference]: With dead ends: 95954 [2020-12-22 07:13:13,323 INFO L226 Difference]: Without dead ends: 67973 [2020-12-22 07:13:13,347 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 07:13:13,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67973 states. [2020-12-22 07:13:19,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67973 to 54015. [2020-12-22 07:13:19,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54015 states. [2020-12-22 07:13:20,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54015 states to 54015 states and 73423 transitions. [2020-12-22 07:13:20,022 INFO L78 Accepts]: Start accepts. Automaton has 54015 states and 73423 transitions. Word has length 279 [2020-12-22 07:13:20,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:13:20,022 INFO L481 AbstractCegarLoop]: Abstraction has 54015 states and 73423 transitions. [2020-12-22 07:13:20,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:13:20,022 INFO L276 IsEmpty]: Start isEmpty. Operand 54015 states and 73423 transitions. [2020-12-22 07:13:20,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-12-22 07:13:20,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:13:20,043 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:13:20,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 07:13:20,043 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:13:20,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:13:20,043 INFO L82 PathProgramCache]: Analyzing trace with hash -604989858, now seen corresponding path program 1 times [2020-12-22 07:13:20,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:13:20,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262454479] [2020-12-22 07:13:20,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:13:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:13:20,151 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:13:20,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262454479] [2020-12-22 07:13:20,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:13:20,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:13:20,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131753229] [2020-12-22 07:13:20,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:13:20,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:13:20,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:13:20,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:13:20,154 INFO L87 Difference]: Start difference. First operand 54015 states and 73423 transitions. Second operand 5 states. [2020-12-22 07:13:31,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:13:31,672 INFO L93 Difference]: Finished difference Result 148627 states and 203306 transitions. [2020-12-22 07:13:31,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:13:31,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 279 [2020-12-22 07:13:31,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:13:31,760 INFO L225 Difference]: With dead ends: 148627 [2020-12-22 07:13:31,760 INFO L226 Difference]: Without dead ends: 94715 [2020-12-22 07:13:31,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 07:13:31,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94715 states. [2020-12-22 07:13:38,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94715 to 54687. [2020-12-22 07:13:38,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54687 states. [2020-12-22 07:13:39,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54687 states to 54687 states and 73886 transitions. [2020-12-22 07:13:39,002 INFO L78 Accepts]: Start accepts. Automaton has 54687 states and 73886 transitions. Word has length 279 [2020-12-22 07:13:39,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:13:39,002 INFO L481 AbstractCegarLoop]: Abstraction has 54687 states and 73886 transitions. [2020-12-22 07:13:39,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:13:39,003 INFO L276 IsEmpty]: Start isEmpty. Operand 54687 states and 73886 transitions. [2020-12-22 07:13:39,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-12-22 07:13:39,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:13:39,022 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:13:39,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 07:13:39,022 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:13:39,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:13:39,023 INFO L82 PathProgramCache]: Analyzing trace with hash -119465886, now seen corresponding path program 1 times [2020-12-22 07:13:39,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:13:39,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883877797] [2020-12-22 07:13:39,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:13:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:13:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:13:39,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883877797] [2020-12-22 07:13:39,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:13:39,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:13:39,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536248759] [2020-12-22 07:13:39,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:13:39,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:13:39,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:13:39,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:13:39,122 INFO L87 Difference]: Start difference. First operand 54687 states and 73886 transitions. Second operand 4 states. [2020-12-22 07:13:55,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:13:55,644 INFO L93 Difference]: Finished difference Result 186655 states and 251833 transitions. [2020-12-22 07:13:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:13:55,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 279 [2020-12-22 07:13:55,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:13:55,793 INFO L225 Difference]: With dead ends: 186655 [2020-12-22 07:13:55,793 INFO L226 Difference]: Without dead ends: 132080 [2020-12-22 07:13:55,840 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 07:13:55,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132080 states. [2020-12-22 07:14:09,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132080 to 105246. [2020-12-22 07:14:09,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105246 states. [2020-12-22 07:14:09,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105246 states to 105246 states and 141691 transitions. [2020-12-22 07:14:09,546 INFO L78 Accepts]: Start accepts. Automaton has 105246 states and 141691 transitions. Word has length 279 [2020-12-22 07:14:09,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:14:09,547 INFO L481 AbstractCegarLoop]: Abstraction has 105246 states and 141691 transitions. [2020-12-22 07:14:09,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:14:09,547 INFO L276 IsEmpty]: Start isEmpty. Operand 105246 states and 141691 transitions. [2020-12-22 07:14:09,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-12-22 07:14:09,579 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:14:09,579 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:14:09,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 07:14:09,580 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:14:09,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:14:09,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1391785500, now seen corresponding path program 1 times [2020-12-22 07:14:09,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:14:09,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612046672] [2020-12-22 07:14:09,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:14:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:14:09,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:14:09,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612046672] [2020-12-22 07:14:09,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:14:09,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:14:09,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842433450] [2020-12-22 07:14:09,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:14:09,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:14:09,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:14:09,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:14:09,701 INFO L87 Difference]: Start difference. First operand 105246 states and 141691 transitions. Second operand 5 states. [2020-12-22 07:14:32,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:14:32,109 INFO L93 Difference]: Finished difference Result 283740 states and 384342 transitions. [2020-12-22 07:14:32,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:14:32,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 279 [2020-12-22 07:14:32,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:14:32,481 INFO L225 Difference]: With dead ends: 283740 [2020-12-22 07:14:32,481 INFO L226 Difference]: Without dead ends: 178610 [2020-12-22 07:14:32,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 07:14:32,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178610 states. [2020-12-22 07:14:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178610 to 106542. [2020-12-22 07:14:47,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106542 states. [2020-12-22 07:14:47,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106542 states to 106542 states and 142586 transitions. [2020-12-22 07:14:47,179 INFO L78 Accepts]: Start accepts. Automaton has 106542 states and 142586 transitions. Word has length 279 [2020-12-22 07:14:47,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:14:47,179 INFO L481 AbstractCegarLoop]: Abstraction has 106542 states and 142586 transitions. [2020-12-22 07:14:47,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:14:47,179 INFO L276 IsEmpty]: Start isEmpty. Operand 106542 states and 142586 transitions. [2020-12-22 07:14:47,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-12-22 07:14:47,214 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:14:47,214 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:14:47,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 07:14:47,214 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:14:47,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:14:47,215 INFO L82 PathProgramCache]: Analyzing trace with hash 894136808, now seen corresponding path program 1 times [2020-12-22 07:14:47,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:14:47,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090500791] [2020-12-22 07:14:47,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:14:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:14:47,547 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:14:47,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090500791] [2020-12-22 07:14:47,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:14:47,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:14:47,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744432360] [2020-12-22 07:14:47,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:14:47,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:14:47,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:14:47,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:14:47,551 INFO L87 Difference]: Start difference. First operand 106542 states and 142586 transitions. Second operand 5 states. [2020-12-22 07:15:19,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:15:19,365 INFO L93 Difference]: Finished difference Result 350378 states and 472875 transitions. [2020-12-22 07:15:19,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:15:19,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 279 [2020-12-22 07:15:19,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:15:19,863 INFO L225 Difference]: With dead ends: 350378 [2020-12-22 07:15:19,864 INFO L226 Difference]: Without dead ends: 243959 [2020-12-22 07:15:19,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 07:15:20,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243959 states.