/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:44:28,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:44:28,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:44:28,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:44:28,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:44:28,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:44:28,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:44:28,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:44:28,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:44:28,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:44:28,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:44:28,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-12-22 08:44:28,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:44:28,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:44:28,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:44:28,603 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:44:28,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:44:28,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:44:28,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:44:28,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:44:28,670 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:44:28,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:44:28,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:44:28,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:44:28,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:44:28,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:44:28,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:44:28,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:44:28,674 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:44:28,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:44:28,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:44:28,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:44:28,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:44:28,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:44:28,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:44:28,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:44:28,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:44:28,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:44:28,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:44:28,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:44:28,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:44:28,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:44:29,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:44:29,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:44:29,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:44:29,177 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:44:29,178 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:44:29,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-12-22 08:44:29,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61fe77cd2/b1a025d267a845708cde4d788fbc1b10/FLAGac8bac7a7 [2020-12-22 08:44:29,981 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:44:29,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-12-22 08:44:30,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61fe77cd2/b1a025d267a845708cde4d788fbc1b10/FLAGac8bac7a7 [2020-12-22 08:44:30,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61fe77cd2/b1a025d267a845708cde4d788fbc1b10 [2020-12-22 08:44:30,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:44:30,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:44:30,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:44:30,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:44:30,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:44:30,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:44:30" (1/1) ... [2020-12-22 08:44:30,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6ec840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:44:30, skipping insertion in model container [2020-12-22 08:44:30,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:44:30" (1/1) ... [2020-12-22 08:44:30,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:44:30,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:44:30,721 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[9872,9885] [2020-12-22 08:44:30,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:44:30,917 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:44:31,023 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[9872,9885] [2020-12-22 08:44:31,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:44:31,089 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:44:31,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:44:31 WrapperNode [2020-12-22 08:44:31,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:44:31,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:44:31,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:44:31,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:44:31,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:44:31" (1/1) ... [2020-12-22 08:44:31,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:44:31" (1/1) ... [2020-12-22 08:44:31,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:44:31,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:44:31,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:44:31,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:44:31,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:44:31" (1/1) ... [2020-12-22 08:44:31,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:44:31" (1/1) ... [2020-12-22 08:44:31,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:44:31" (1/1) ... [2020-12-22 08:44:31,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:44:31" (1/1) ... [2020-12-22 08:44:31,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:44:31" (1/1) ... [2020-12-22 08:44:31,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:44:31" (1/1) ... [2020-12-22 08:44:31,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:44:31" (1/1) ... [2020-12-22 08:44:31,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:44:31,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:44:31,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:44:31,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:44:31,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:44:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:44:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:44:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:44:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:44:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:44:32,671 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:44:32,672 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:44:32,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:44:32 BoogieIcfgContainer [2020-12-22 08:44:32,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:44:32,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:44:32,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:44:32,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:44:32,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:44:30" (1/3) ... [2020-12-22 08:44:32,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8eb015c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:44:32, skipping insertion in model container [2020-12-22 08:44:32,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:44:31" (2/3) ... [2020-12-22 08:44:32,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8eb015c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:44:32, skipping insertion in model container [2020-12-22 08:44:32,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:44:32" (3/3) ... [2020-12-22 08:44:32,694 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-12-22 08:44:32,708 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:44:32,715 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:44:32,767 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:44:32,805 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:44:32,805 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:44:32,805 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:44:32,806 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:44:32,806 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:44:32,806 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:44:32,806 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:44:32,806 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:44:32,831 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-12-22 08:44:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 08:44:32,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:32,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:44:32,848 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:32,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:32,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1369000833, now seen corresponding path program 1 times [2020-12-22 08:44:32,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:32,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458399064] [2020-12-22 08:44:32,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:33,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458399064] [2020-12-22 08:44:33,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:33,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:44:33,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903892144] [2020-12-22 08:44:33,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:44:33,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:33,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:44:33,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:44:33,305 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 4 states. [2020-12-22 08:44:33,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:33,469 INFO L93 Difference]: Finished difference Result 403 states and 654 transitions. [2020-12-22 08:44:33,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:44:33,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-12-22 08:44:33,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:33,500 INFO L225 Difference]: With dead ends: 403 [2020-12-22 08:44:33,501 INFO L226 Difference]: Without dead ends: 212 [2020-12-22 08:44:33,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:44:33,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-12-22 08:44:33,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-12-22 08:44:33,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-12-22 08:44:33,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 317 transitions. [2020-12-22 08:44:33,620 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 317 transitions. Word has length 79 [2020-12-22 08:44:33,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:33,623 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 317 transitions. [2020-12-22 08:44:33,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:44:33,623 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 317 transitions. [2020-12-22 08:44:33,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 08:44:33,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:33,636 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] [2020-12-22 08:44:33,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:44:33,638 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:33,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:33,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1406572509, now seen corresponding path program 1 times [2020-12-22 08:44:33,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:33,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118587210] [2020-12-22 08:44:33,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:33,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118587210] [2020-12-22 08:44:33,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:33,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:44:33,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803522452] [2020-12-22 08:44:33,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:44:33,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:33,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:44:33,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:33,957 INFO L87 Difference]: Start difference. First operand 212 states and 317 transitions. Second operand 3 states. [2020-12-22 08:44:34,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:34,066 INFO L93 Difference]: Finished difference Result 480 states and 743 transitions. [2020-12-22 08:44:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:44:34,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-12-22 08:44:34,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:34,075 INFO L225 Difference]: With dead ends: 480 [2020-12-22 08:44:34,076 INFO L226 Difference]: Without dead ends: 309 [2020-12-22 08:44:34,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:34,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-12-22 08:44:34,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 307. [2020-12-22 08:44:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-12-22 08:44:34,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 467 transitions. [2020-12-22 08:44:34,136 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 467 transitions. Word has length 109 [2020-12-22 08:44:34,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:34,138 INFO L481 AbstractCegarLoop]: Abstraction has 307 states and 467 transitions. [2020-12-22 08:44:34,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:44:34,138 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 467 transitions. [2020-12-22 08:44:34,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 08:44:34,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:34,147 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] [2020-12-22 08:44:34,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:44:34,147 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:34,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:34,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1105344852, now seen corresponding path program 1 times [2020-12-22 08:44:34,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:34,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50985199] [2020-12-22 08:44:34,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:34,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50985199] [2020-12-22 08:44:34,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:34,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:44:34,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668325771] [2020-12-22 08:44:34,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:44:34,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:34,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:44:34,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:34,323 INFO L87 Difference]: Start difference. First operand 307 states and 467 transitions. Second operand 3 states. [2020-12-22 08:44:34,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:34,390 INFO L93 Difference]: Finished difference Result 735 states and 1148 transitions. [2020-12-22 08:44:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:44:34,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-12-22 08:44:34,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:34,395 INFO L225 Difference]: With dead ends: 735 [2020-12-22 08:44:34,395 INFO L226 Difference]: Without dead ends: 475 [2020-12-22 08:44:34,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:34,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-12-22 08:44:34,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 473. [2020-12-22 08:44:34,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-12-22 08:44:34,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 729 transitions. [2020-12-22 08:44:34,439 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 729 transitions. Word has length 111 [2020-12-22 08:44:34,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:34,440 INFO L481 AbstractCegarLoop]: Abstraction has 473 states and 729 transitions. [2020-12-22 08:44:34,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:44:34,441 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 729 transitions. [2020-12-22 08:44:34,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 08:44:34,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:34,444 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] [2020-12-22 08:44:34,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:44:34,445 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:34,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:34,446 INFO L82 PathProgramCache]: Analyzing trace with hash 287285005, now seen corresponding path program 1 times [2020-12-22 08:44:34,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:34,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374111160] [2020-12-22 08:44:34,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:34,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374111160] [2020-12-22 08:44:34,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:34,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:44:34,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720626217] [2020-12-22 08:44:34,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:44:34,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:34,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:44:34,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:34,580 INFO L87 Difference]: Start difference. First operand 473 states and 729 transitions. Second operand 3 states. [2020-12-22 08:44:34,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:34,646 INFO L93 Difference]: Finished difference Result 1175 states and 1844 transitions. [2020-12-22 08:44:34,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:44:34,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-22 08:44:34,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:34,653 INFO L225 Difference]: With dead ends: 1175 [2020-12-22 08:44:34,653 INFO L226 Difference]: Without dead ends: 755 [2020-12-22 08:44:34,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:34,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2020-12-22 08:44:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 753. [2020-12-22 08:44:34,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-12-22 08:44:34,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1169 transitions. [2020-12-22 08:44:34,697 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1169 transitions. Word has length 113 [2020-12-22 08:44:34,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:34,698 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 1169 transitions. [2020-12-22 08:44:34,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:44:34,698 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1169 transitions. [2020-12-22 08:44:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 08:44:34,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:34,701 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] [2020-12-22 08:44:34,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:44:34,702 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:34,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:34,702 INFO L82 PathProgramCache]: Analyzing trace with hash 155565224, now seen corresponding path program 1 times [2020-12-22 08:44:34,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:34,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401949496] [2020-12-22 08:44:34,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:34,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401949496] [2020-12-22 08:44:34,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:34,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:44:34,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468707814] [2020-12-22 08:44:34,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:44:34,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:34,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:44:34,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:34,808 INFO L87 Difference]: Start difference. First operand 753 states and 1169 transitions. Second operand 3 states. [2020-12-22 08:44:34,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:34,894 INFO L93 Difference]: Finished difference Result 1901 states and 2984 transitions. [2020-12-22 08:44:34,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:44:34,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2020-12-22 08:44:34,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:34,903 INFO L225 Difference]: With dead ends: 1901 [2020-12-22 08:44:34,903 INFO L226 Difference]: Without dead ends: 1207 [2020-12-22 08:44:34,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:34,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2020-12-22 08:44:34,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1205. [2020-12-22 08:44:34,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1205 states. [2020-12-22 08:44:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1873 transitions. [2020-12-22 08:44:34,974 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1873 transitions. Word has length 115 [2020-12-22 08:44:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:34,974 INFO L481 AbstractCegarLoop]: Abstraction has 1205 states and 1873 transitions. [2020-12-22 08:44:34,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:44:34,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1873 transitions. [2020-12-22 08:44:34,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 08:44:34,978 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:34,979 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] [2020-12-22 08:44:34,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:44:34,979 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:34,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:34,980 INFO L82 PathProgramCache]: Analyzing trace with hash -2047962190, now seen corresponding path program 1 times [2020-12-22 08:44:34,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:34,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680539088] [2020-12-22 08:44:34,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:35,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680539088] [2020-12-22 08:44:35,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:35,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:44:35,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763279109] [2020-12-22 08:44:35,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:44:35,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:35,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:44:35,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:35,061 INFO L87 Difference]: Start difference. First operand 1205 states and 1873 transitions. Second operand 3 states. [2020-12-22 08:44:35,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:35,212 INFO L93 Difference]: Finished difference Result 3031 states and 4736 transitions. [2020-12-22 08:44:35,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:44:35,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2020-12-22 08:44:35,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:35,224 INFO L225 Difference]: With dead ends: 3031 [2020-12-22 08:44:35,225 INFO L226 Difference]: Without dead ends: 1891 [2020-12-22 08:44:35,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:35,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2020-12-22 08:44:35,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1889. [2020-12-22 08:44:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2020-12-22 08:44:35,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2921 transitions. [2020-12-22 08:44:35,354 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2921 transitions. Word has length 117 [2020-12-22 08:44:35,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:35,355 INFO L481 AbstractCegarLoop]: Abstraction has 1889 states and 2921 transitions. [2020-12-22 08:44:35,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:44:35,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2921 transitions. [2020-12-22 08:44:35,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 08:44:35,361 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:35,362 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] [2020-12-22 08:44:35,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:44:35,362 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:35,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:35,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1115406563, now seen corresponding path program 1 times [2020-12-22 08:44:35,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:35,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200155156] [2020-12-22 08:44:35,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:35,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:35,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200155156] [2020-12-22 08:44:35,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:35,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:44:35,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315393509] [2020-12-22 08:44:35,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:44:35,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:35,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:44:35,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:35,523 INFO L87 Difference]: Start difference. First operand 1889 states and 2921 transitions. Second operand 3 states. [2020-12-22 08:44:36,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:36,160 INFO L93 Difference]: Finished difference Result 5239 states and 8118 transitions. [2020-12-22 08:44:36,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:44:36,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2020-12-22 08:44:36,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:36,188 INFO L225 Difference]: With dead ends: 5239 [2020-12-22 08:44:36,189 INFO L226 Difference]: Without dead ends: 3715 [2020-12-22 08:44:36,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:36,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3715 states. [2020-12-22 08:44:36,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3715 to 3713. [2020-12-22 08:44:36,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3713 states. [2020-12-22 08:44:36,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 5738 transitions. [2020-12-22 08:44:36,463 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 5738 transitions. Word has length 119 [2020-12-22 08:44:36,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:36,465 INFO L481 AbstractCegarLoop]: Abstraction has 3713 states and 5738 transitions. [2020-12-22 08:44:36,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:44:36,465 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 5738 transitions. [2020-12-22 08:44:36,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 08:44:36,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:36,501 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] [2020-12-22 08:44:36,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:44:36,502 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:36,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:36,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1243491870, now seen corresponding path program 1 times [2020-12-22 08:44:36,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:36,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245520272] [2020-12-22 08:44:36,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:36,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:36,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245520272] [2020-12-22 08:44:36,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:36,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:44:36,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364767156] [2020-12-22 08:44:36,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:44:36,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:36,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:44:36,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:44:36,691 INFO L87 Difference]: Start difference. First operand 3713 states and 5738 transitions. Second operand 6 states. [2020-12-22 08:44:37,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:37,466 INFO L93 Difference]: Finished difference Result 10394 states and 16059 transitions. [2020-12-22 08:44:37,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:44:37,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-12-22 08:44:37,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:37,504 INFO L225 Difference]: With dead ends: 10394 [2020-12-22 08:44:37,504 INFO L226 Difference]: Without dead ends: 6720 [2020-12-22 08:44:37,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:44:37,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6720 states. [2020-12-22 08:44:38,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6720 to 6718. [2020-12-22 08:44:38,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6718 states. [2020-12-22 08:44:38,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6718 states to 6718 states and 10326 transitions. [2020-12-22 08:44:38,065 INFO L78 Accepts]: Start accepts. Automaton has 6718 states and 10326 transitions. Word has length 119 [2020-12-22 08:44:38,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:38,066 INFO L481 AbstractCegarLoop]: Abstraction has 6718 states and 10326 transitions. [2020-12-22 08:44:38,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:44:38,067 INFO L276 IsEmpty]: Start isEmpty. Operand 6718 states and 10326 transitions. [2020-12-22 08:44:38,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 08:44:38,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:38,088 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] [2020-12-22 08:44:38,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:44:38,089 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:38,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:38,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1288765378, now seen corresponding path program 1 times [2020-12-22 08:44:38,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:38,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445613930] [2020-12-22 08:44:38,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:38,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445613930] [2020-12-22 08:44:38,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:38,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:44:38,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025576202] [2020-12-22 08:44:38,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:44:38,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:38,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:44:38,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:44:38,264 INFO L87 Difference]: Start difference. First operand 6718 states and 10326 transitions. Second operand 6 states. [2020-12-22 08:44:39,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:39,364 INFO L93 Difference]: Finished difference Result 18881 states and 28965 transitions. [2020-12-22 08:44:39,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:44:39,365 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-12-22 08:44:39,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:39,454 INFO L225 Difference]: With dead ends: 18881 [2020-12-22 08:44:39,454 INFO L226 Difference]: Without dead ends: 12232 [2020-12-22 08:44:39,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:44:39,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12232 states. [2020-12-22 08:44:40,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12232 to 12230. [2020-12-22 08:44:40,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12230 states. [2020-12-22 08:44:40,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12230 states to 12230 states and 18628 transitions. [2020-12-22 08:44:40,408 INFO L78 Accepts]: Start accepts. Automaton has 12230 states and 18628 transitions. Word has length 119 [2020-12-22 08:44:40,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:40,409 INFO L481 AbstractCegarLoop]: Abstraction has 12230 states and 18628 transitions. [2020-12-22 08:44:40,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:44:40,409 INFO L276 IsEmpty]: Start isEmpty. Operand 12230 states and 18628 transitions. [2020-12-22 08:44:40,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 08:44:40,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:40,435 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] [2020-12-22 08:44:40,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:44:40,436 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:40,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:40,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1939525086, now seen corresponding path program 1 times [2020-12-22 08:44:40,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:40,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039184154] [2020-12-22 08:44:40,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:40,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039184154] [2020-12-22 08:44:40,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:40,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:44:40,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309369849] [2020-12-22 08:44:40,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:44:40,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:40,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:44:40,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:44:40,539 INFO L87 Difference]: Start difference. First operand 12230 states and 18628 transitions. Second operand 5 states. [2020-12-22 08:44:41,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:41,623 INFO L93 Difference]: Finished difference Result 24403 states and 37192 transitions. [2020-12-22 08:44:41,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:44:41,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-12-22 08:44:41,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:41,656 INFO L225 Difference]: With dead ends: 24403 [2020-12-22 08:44:41,656 INFO L226 Difference]: Without dead ends: 12230 [2020-12-22 08:44:41,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:44:41,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12230 states. [2020-12-22 08:44:42,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12230 to 12230. [2020-12-22 08:44:42,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12230 states. [2020-12-22 08:44:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12230 states to 12230 states and 18486 transitions. [2020-12-22 08:44:42,622 INFO L78 Accepts]: Start accepts. Automaton has 12230 states and 18486 transitions. Word has length 119 [2020-12-22 08:44:42,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:42,622 INFO L481 AbstractCegarLoop]: Abstraction has 12230 states and 18486 transitions. [2020-12-22 08:44:42,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:44:42,622 INFO L276 IsEmpty]: Start isEmpty. Operand 12230 states and 18486 transitions. [2020-12-22 08:44:42,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 08:44:42,650 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:42,650 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] [2020-12-22 08:44:42,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:44:42,651 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:42,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:42,652 INFO L82 PathProgramCache]: Analyzing trace with hash -529000084, now seen corresponding path program 1 times [2020-12-22 08:44:42,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:42,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951311503] [2020-12-22 08:44:42,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:42,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:42,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951311503] [2020-12-22 08:44:42,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:42,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:44:42,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328201627] [2020-12-22 08:44:42,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:44:42,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:42,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:44:42,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:44:42,781 INFO L87 Difference]: Start difference. First operand 12230 states and 18486 transitions. Second operand 5 states. [2020-12-22 08:44:43,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:43,340 INFO L93 Difference]: Finished difference Result 17727 states and 26811 transitions. [2020-12-22 08:44:43,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:44:43,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-12-22 08:44:43,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:43,358 INFO L225 Difference]: With dead ends: 17727 [2020-12-22 08:44:43,358 INFO L226 Difference]: Without dead ends: 6172 [2020-12-22 08:44:43,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:44:43,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6172 states. [2020-12-22 08:44:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6172 to 6172. [2020-12-22 08:44:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6172 states. [2020-12-22 08:44:43,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6172 states to 6172 states and 9300 transitions. [2020-12-22 08:44:43,875 INFO L78 Accepts]: Start accepts. Automaton has 6172 states and 9300 transitions. Word has length 119 [2020-12-22 08:44:43,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:43,875 INFO L481 AbstractCegarLoop]: Abstraction has 6172 states and 9300 transitions. [2020-12-22 08:44:43,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:44:43,876 INFO L276 IsEmpty]: Start isEmpty. Operand 6172 states and 9300 transitions. [2020-12-22 08:44:43,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 08:44:43,888 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:43,889 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] [2020-12-22 08:44:43,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:44:43,889 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:43,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:43,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1387267810, now seen corresponding path program 1 times [2020-12-22 08:44:43,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:43,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428110926] [2020-12-22 08:44:43,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:44,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428110926] [2020-12-22 08:44:44,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:44,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:44:44,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024407515] [2020-12-22 08:44:44,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:44:44,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:44,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:44:44,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:44:44,033 INFO L87 Difference]: Start difference. First operand 6172 states and 9300 transitions. Second operand 7 states. [2020-12-22 08:44:47,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:47,257 INFO L93 Difference]: Finished difference Result 59265 states and 88879 transitions. [2020-12-22 08:44:47,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:44:47,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-12-22 08:44:47,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:47,411 INFO L225 Difference]: With dead ends: 59265 [2020-12-22 08:44:47,411 INFO L226 Difference]: Without dead ends: 53164 [2020-12-22 08:44:47,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:44:47,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53164 states. [2020-12-22 08:44:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53164 to 12135. [2020-12-22 08:44:48,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12135 states. [2020-12-22 08:44:48,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12135 states to 12135 states and 17900 transitions. [2020-12-22 08:44:48,917 INFO L78 Accepts]: Start accepts. Automaton has 12135 states and 17900 transitions. Word has length 119 [2020-12-22 08:44:48,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:48,918 INFO L481 AbstractCegarLoop]: Abstraction has 12135 states and 17900 transitions. [2020-12-22 08:44:48,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:44:48,918 INFO L276 IsEmpty]: Start isEmpty. Operand 12135 states and 17900 transitions. [2020-12-22 08:44:48,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-22 08:44:48,938 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:48,939 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] [2020-12-22 08:44:48,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:44:48,939 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:48,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:48,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1816909586, now seen corresponding path program 1 times [2020-12-22 08:44:48,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:48,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933642065] [2020-12-22 08:44:48,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:49,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933642065] [2020-12-22 08:44:49,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:49,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:44:49,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122188838] [2020-12-22 08:44:49,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:44:49,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:49,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:44:49,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:49,168 INFO L87 Difference]: Start difference. First operand 12135 states and 17900 transitions. Second operand 3 states. [2020-12-22 08:44:50,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:50,478 INFO L93 Difference]: Finished difference Result 26518 states and 39051 transitions. [2020-12-22 08:44:50,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:44:50,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2020-12-22 08:44:50,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:50,513 INFO L225 Difference]: With dead ends: 26518 [2020-12-22 08:44:50,513 INFO L226 Difference]: Without dead ends: 14452 [2020-12-22 08:44:50,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:50,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14452 states. [2020-12-22 08:44:52,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14452 to 14450. [2020-12-22 08:44:52,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14450 states. [2020-12-22 08:44:52,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14450 states to 14450 states and 21059 transitions. [2020-12-22 08:44:52,056 INFO L78 Accepts]: Start accepts. Automaton has 14450 states and 21059 transitions. Word has length 123 [2020-12-22 08:44:52,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:52,057 INFO L481 AbstractCegarLoop]: Abstraction has 14450 states and 21059 transitions. [2020-12-22 08:44:52,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:44:52,057 INFO L276 IsEmpty]: Start isEmpty. Operand 14450 states and 21059 transitions. [2020-12-22 08:44:52,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-22 08:44:52,080 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:52,081 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] [2020-12-22 08:44:52,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:44:52,081 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:52,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:52,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1442440817, now seen corresponding path program 1 times [2020-12-22 08:44:52,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:52,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944756174] [2020-12-22 08:44:52,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:52,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944756174] [2020-12-22 08:44:52,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:52,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:44:52,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585026479] [2020-12-22 08:44:52,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:44:52,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:52,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:44:52,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:52,165 INFO L87 Difference]: Start difference. First operand 14450 states and 21059 transitions. Second operand 3 states. [2020-12-22 08:44:54,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:54,349 INFO L93 Difference]: Finished difference Result 41499 states and 60264 transitions. [2020-12-22 08:44:54,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:44:54,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2020-12-22 08:44:54,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:54,522 INFO L225 Difference]: With dead ends: 41499 [2020-12-22 08:44:54,523 INFO L226 Difference]: Without dead ends: 28609 [2020-12-22 08:44:54,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:44:54,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28609 states. [2020-12-22 08:44:56,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28609 to 28607. [2020-12-22 08:44:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28607 states. [2020-12-22 08:44:57,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28607 states to 28607 states and 41364 transitions. [2020-12-22 08:44:57,020 INFO L78 Accepts]: Start accepts. Automaton has 28607 states and 41364 transitions. Word has length 123 [2020-12-22 08:44:57,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:57,020 INFO L481 AbstractCegarLoop]: Abstraction has 28607 states and 41364 transitions. [2020-12-22 08:44:57,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:44:57,020 INFO L276 IsEmpty]: Start isEmpty. Operand 28607 states and 41364 transitions. [2020-12-22 08:44:57,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-22 08:44:57,059 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:57,060 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] [2020-12-22 08:44:57,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:44:57,060 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:57,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:57,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1578658474, now seen corresponding path program 1 times [2020-12-22 08:44:57,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:57,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497267708] [2020-12-22 08:44:57,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:57,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:57,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497267708] [2020-12-22 08:44:57,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:57,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:44:57,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019675215] [2020-12-22 08:44:57,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:44:57,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:57,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:44:57,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:44:57,315 INFO L87 Difference]: Start difference. First operand 28607 states and 41364 transitions. Second operand 7 states. [2020-12-22 08:45:06,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:06,867 INFO L93 Difference]: Finished difference Result 161077 states and 232494 transitions. [2020-12-22 08:45:06,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:45:06,868 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-12-22 08:45:06,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:07,365 INFO L225 Difference]: With dead ends: 161077 [2020-12-22 08:45:07,365 INFO L226 Difference]: Without dead ends: 136611 [2020-12-22 08:45:07,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:45:07,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136611 states. [2020-12-22 08:45:12,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136611 to 53935. [2020-12-22 08:45:12,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53935 states. [2020-12-22 08:45:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53935 states to 53935 states and 77464 transitions. [2020-12-22 08:45:12,747 INFO L78 Accepts]: Start accepts. Automaton has 53935 states and 77464 transitions. Word has length 123 [2020-12-22 08:45:12,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:12,747 INFO L481 AbstractCegarLoop]: Abstraction has 53935 states and 77464 transitions. [2020-12-22 08:45:12,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:45:12,748 INFO L276 IsEmpty]: Start isEmpty. Operand 53935 states and 77464 transitions. [2020-12-22 08:45:12,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-22 08:45:12,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:12,801 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] [2020-12-22 08:45:12,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:45:12,801 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:12,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:12,802 INFO L82 PathProgramCache]: Analyzing trace with hash -210295029, now seen corresponding path program 1 times [2020-12-22 08:45:12,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:12,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558968687] [2020-12-22 08:45:12,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:12,961 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 08:45:12,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558968687] [2020-12-22 08:45:12,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:12,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:45:12,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170107542] [2020-12-22 08:45:12,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:45:12,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:12,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:45:12,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:45:12,966 INFO L87 Difference]: Start difference. First operand 53935 states and 77464 transitions. Second operand 7 states. [2020-12-22 08:45:25,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:25,516 INFO L93 Difference]: Finished difference Result 185637 states and 267590 transitions. [2020-12-22 08:45:25,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:45:25,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-12-22 08:45:25,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:25,959 INFO L225 Difference]: With dead ends: 185637 [2020-12-22 08:45:25,959 INFO L226 Difference]: Without dead ends: 161219 [2020-12-22 08:45:26,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:45:26,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161219 states. [2020-12-22 08:45:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161219 to 91411. [2020-12-22 08:45:34,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91411 states. [2020-12-22 08:45:34,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91411 states to 91411 states and 130864 transitions. [2020-12-22 08:45:34,356 INFO L78 Accepts]: Start accepts. Automaton has 91411 states and 130864 transitions. Word has length 123 [2020-12-22 08:45:34,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:34,356 INFO L481 AbstractCegarLoop]: Abstraction has 91411 states and 130864 transitions. [2020-12-22 08:45:34,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:45:34,356 INFO L276 IsEmpty]: Start isEmpty. Operand 91411 states and 130864 transitions. [2020-12-22 08:45:34,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-22 08:45:34,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:34,436 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] [2020-12-22 08:45:34,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:45:34,436 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:34,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:34,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1427174444, now seen corresponding path program 1 times [2020-12-22 08:45:34,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:34,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920169246] [2020-12-22 08:45:34,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:34,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:45:34,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920169246] [2020-12-22 08:45:34,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:34,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:45:34,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181374448] [2020-12-22 08:45:34,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:45:34,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:34,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:45:34,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:45:34,616 INFO L87 Difference]: Start difference. First operand 91411 states and 130864 transitions. Second operand 7 states. [2020-12-22 08:45:49,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:49,485 INFO L93 Difference]: Finished difference Result 210683 states and 303368 transitions. [2020-12-22 08:45:49,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:45:49,485 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-12-22 08:45:49,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:49,873 INFO L225 Difference]: With dead ends: 210683 [2020-12-22 08:45:49,873 INFO L226 Difference]: Without dead ends: 186217 [2020-12-22 08:45:49,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:45:50,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186217 states. [2020-12-22 08:46:00,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186217 to 116813. [2020-12-22 08:46:00,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116813 states. [2020-12-22 08:46:01,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116813 states to 116813 states and 167174 transitions. [2020-12-22 08:46:01,127 INFO L78 Accepts]: Start accepts. Automaton has 116813 states and 167174 transitions. Word has length 123 [2020-12-22 08:46:01,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:01,127 INFO L481 AbstractCegarLoop]: Abstraction has 116813 states and 167174 transitions. [2020-12-22 08:46:01,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:46:01,127 INFO L276 IsEmpty]: Start isEmpty. Operand 116813 states and 167174 transitions. [2020-12-22 08:46:01,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-22 08:46:01,215 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:01,217 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] [2020-12-22 08:46:01,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:46:01,217 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:46:01,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:01,218 INFO L82 PathProgramCache]: Analyzing trace with hash 758673487, now seen corresponding path program 1 times [2020-12-22 08:46:01,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:01,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981321321] [2020-12-22 08:46:01,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:46:01,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981321321] [2020-12-22 08:46:01,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:46:01,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:46:01,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174693300] [2020-12-22 08:46:01,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:46:01,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:01,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:46:01,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:46:01,388 INFO L87 Difference]: Start difference. First operand 116813 states and 167174 transitions. Second operand 7 states. [2020-12-22 08:46:20,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:20,146 INFO L93 Difference]: Finished difference Result 235981 states and 339520 transitions. [2020-12-22 08:46:20,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:46:20,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-12-22 08:46:20,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:20,622 INFO L225 Difference]: With dead ends: 235981 [2020-12-22 08:46:20,622 INFO L226 Difference]: Without dead ends: 211515 [2020-12-22 08:46:20,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:46:20,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211515 states. [2020-12-22 08:46:34,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211515 to 142233. [2020-12-22 08:46:34,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142233 states. [2020-12-22 08:46:35,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142233 states to 142233 states and 203512 transitions. [2020-12-22 08:46:35,474 INFO L78 Accepts]: Start accepts. Automaton has 142233 states and 203512 transitions. Word has length 123 [2020-12-22 08:46:35,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:35,491 INFO L481 AbstractCegarLoop]: Abstraction has 142233 states and 203512 transitions. [2020-12-22 08:46:35,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:46:35,491 INFO L276 IsEmpty]: Start isEmpty. Operand 142233 states and 203512 transitions. [2020-12-22 08:46:35,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-22 08:46:35,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:35,600 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] [2020-12-22 08:46:35,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:46:35,600 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:46:35,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:35,601 INFO L82 PathProgramCache]: Analyzing trace with hash 151814446, now seen corresponding path program 1 times [2020-12-22 08:46:35,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:35,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623547326] [2020-12-22 08:46:35,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:35,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:46:35,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623547326] [2020-12-22 08:46:35,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:46:35,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:46:35,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66323340] [2020-12-22 08:46:35,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:46:35,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:35,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:46:35,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:46:35,735 INFO L87 Difference]: Start difference. First operand 142233 states and 203512 transitions. Second operand 7 states. [2020-12-22 08:46:58,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:58,134 INFO L93 Difference]: Finished difference Result 251595 states and 362250 transitions. [2020-12-22 08:46:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:46:58,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-12-22 08:46:58,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:58,808 INFO L225 Difference]: With dead ends: 251595 [2020-12-22 08:46:58,809 INFO L226 Difference]: Without dead ends: 231913 [2020-12-22 08:46:58,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:46:59,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231913 states. [2020-12-22 08:47:16,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231913 to 162631. [2020-12-22 08:47:16,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162631 states. [2020-12-22 08:47:16,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162631 states to 162631 states and 232970 transitions. [2020-12-22 08:47:16,970 INFO L78 Accepts]: Start accepts. Automaton has 162631 states and 232970 transitions. Word has length 123 [2020-12-22 08:47:16,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:16,971 INFO L481 AbstractCegarLoop]: Abstraction has 162631 states and 232970 transitions. [2020-12-22 08:47:16,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:47:16,971 INFO L276 IsEmpty]: Start isEmpty. Operand 162631 states and 232970 transitions.