/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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:23:16,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:23:16,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:23:16,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:23:16,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:23:16,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:23:16,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:23:16,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:23:16,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:23:16,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:23:16,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:23:16,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:23:16,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:23:16,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:23:16,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:23:16,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:23:16,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:23:16,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:23:16,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:23:16,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:23:16,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:23:16,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:23:16,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:23:16,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:23:16,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 10:23:16,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:23:16,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:23:16,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:23:16,609 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:23:16,656 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:23:16,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:23:16,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:23:16,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:23:16,662 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:23:16,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:23:16,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:23:16,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:23:16,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:23:16,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:23:16,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:23:16,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:23:16,664 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:23:16,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:23:16,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:23:16,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:23:16,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:23:16,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:23:16,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:23:16,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:23:16,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:23:16,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:23:16,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:23:16,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:23:16,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:23:16,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:23:17,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:23:17,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:23:17,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:23:17,088 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:23:17,088 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:23:17,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c [2020-12-22 10:23:17,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74bae5abd/f4339db5bcd747d4acde9af8176d06be/FLAGbd78d0f5e [2020-12-22 10:23:18,199 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:23:18,200 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c [2020-12-22 10:23:18,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74bae5abd/f4339db5bcd747d4acde9af8176d06be/FLAGbd78d0f5e [2020-12-22 10:23:18,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74bae5abd/f4339db5bcd747d4acde9af8176d06be [2020-12-22 10:23:18,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:23:18,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:23:18,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:23:18,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:23:18,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:23:18,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:23:18" (1/1) ... [2020-12-22 10:23:18,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45866e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:18, skipping insertion in model container [2020-12-22 10:23:18,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:23:18" (1/1) ... [2020-12-22 10:23:18,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:23:18,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:23:19,363 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c[26847,26860] [2020-12-22 10:23:19,421 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c[30111,30124] [2020-12-22 10:23:20,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:23:20,485 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:23:20,606 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c[26847,26860] [2020-12-22 10:23:20,615 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c[30111,30124] [2020-12-22 10:23:21,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:23:21,239 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:23:21,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:21 WrapperNode [2020-12-22 10:23:21,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:23:21,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:23:21,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:23:21,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:23:21,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:21" (1/1) ... [2020-12-22 10:23:21,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:21" (1/1) ... [2020-12-22 10:23:21,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:23:21,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:23:21,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:23:21,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:23:21,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:21" (1/1) ... [2020-12-22 10:23:21,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:21" (1/1) ... [2020-12-22 10:23:21,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:21" (1/1) ... [2020-12-22 10:23:21,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:21" (1/1) ... [2020-12-22 10:23:22,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:21" (1/1) ... [2020-12-22 10:23:22,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:21" (1/1) ... [2020-12-22 10:23:22,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:21" (1/1) ... [2020-12-22 10:23:22,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:23:22,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:23:22,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:23:22,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:23:22,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:21" (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 10:23:22,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:23:22,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:23:22,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:23:22,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:23:28,613 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:23:28,613 INFO L299 CfgBuilder]: Removed 42 assume(true) statements. [2020-12-22 10:23:28,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:23:28 BoogieIcfgContainer [2020-12-22 10:23:28,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:23:28,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:23:28,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:23:28,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:23:28,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:23:18" (1/3) ... [2020-12-22 10:23:28,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce0af75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:23:28, skipping insertion in model container [2020-12-22 10:23:28,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:21" (2/3) ... [2020-12-22 10:23:28,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce0af75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:23:28, skipping insertion in model container [2020-12-22 10:23:28,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:23:28" (3/3) ... [2020-12-22 10:23:28,627 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label08.c [2020-12-22 10:23:28,635 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:23:28,642 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:23:28,663 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:23:28,700 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:23:28,701 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:23:28,701 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:23:28,701 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:23:28,701 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:23:28,701 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:23:28,701 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:23:28,701 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:23:28,739 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states. [2020-12-22 10:23:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 10:23:28,749 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:23:28,750 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] [2020-12-22 10:23:28,751 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:23:28,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:23:28,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1701875667, now seen corresponding path program 1 times [2020-12-22 10:23:28,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:23:28,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100596041] [2020-12-22 10:23:28,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:23:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:23:29,277 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 10:23:29,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100596041] [2020-12-22 10:23:29,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:23:29,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:23:29,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97566293] [2020-12-22 10:23:29,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:23:29,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:23:29,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:23:29,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:23:29,308 INFO L87 Difference]: Start difference. First operand 963 states. Second operand 3 states. [2020-12-22 10:23:36,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:23:36,085 INFO L93 Difference]: Finished difference Result 2630 states and 5030 transitions. [2020-12-22 10:23:36,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:23:36,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-22 10:23:36,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:23:36,125 INFO L225 Difference]: With dead ends: 2630 [2020-12-22 10:23:36,125 INFO L226 Difference]: Without dead ends: 1648 [2020-12-22 10:23:36,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:23:36,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2020-12-22 10:23:36,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2020-12-22 10:23:36,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1648 states. [2020-12-22 10:23:36,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2667 transitions. [2020-12-22 10:23:36,337 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2667 transitions. Word has length 30 [2020-12-22 10:23:36,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:23:36,337 INFO L481 AbstractCegarLoop]: Abstraction has 1648 states and 2667 transitions. [2020-12-22 10:23:36,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:23:36,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2667 transitions. [2020-12-22 10:23:36,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 10:23:36,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:23:36,341 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] [2020-12-22 10:23:36,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:23:36,341 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:23:36,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:23:36,342 INFO L82 PathProgramCache]: Analyzing trace with hash 815979124, now seen corresponding path program 1 times [2020-12-22 10:23:36,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:23:36,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000850790] [2020-12-22 10:23:36,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:23:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:23:36,466 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 10:23:36,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000850790] [2020-12-22 10:23:36,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:23:36,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:23:36,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548281456] [2020-12-22 10:23:36,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:23:36,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:23:36,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:23:36,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:23:36,473 INFO L87 Difference]: Start difference. First operand 1648 states and 2667 transitions. Second operand 5 states. [2020-12-22 10:23:36,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:23:36,643 INFO L93 Difference]: Finished difference Result 1728 states and 2792 transitions. [2020-12-22 10:23:36,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:23:36,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-12-22 10:23:36,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:23:36,658 INFO L225 Difference]: With dead ends: 1728 [2020-12-22 10:23:36,658 INFO L226 Difference]: Without dead ends: 1648 [2020-12-22 10:23:36,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 10:23:36,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2020-12-22 10:23:36,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2020-12-22 10:23:36,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1648 states. [2020-12-22 10:23:36,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2606 transitions. [2020-12-22 10:23:36,713 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2606 transitions. Word has length 46 [2020-12-22 10:23:36,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:23:36,713 INFO L481 AbstractCegarLoop]: Abstraction has 1648 states and 2606 transitions. [2020-12-22 10:23:36,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:23:36,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2606 transitions. [2020-12-22 10:23:36,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 10:23:36,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:23:36,725 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:23:36,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:23:36,726 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:23:36,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:23:36,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1179590111, now seen corresponding path program 1 times [2020-12-22 10:23:36,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:23:36,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980782532] [2020-12-22 10:23:36,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:23:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:23:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:23:37,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980782532] [2020-12-22 10:23:37,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:23:37,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:23:37,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468673054] [2020-12-22 10:23:37,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:23:37,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:23:37,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:23:37,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:23:37,046 INFO L87 Difference]: Start difference. First operand 1648 states and 2606 transitions. Second operand 3 states. [2020-12-22 10:23:42,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:23:42,470 INFO L93 Difference]: Finished difference Result 4654 states and 7437 transitions. [2020-12-22 10:23:42,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:23:42,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 10:23:42,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:23:42,490 INFO L225 Difference]: With dead ends: 4654 [2020-12-22 10:23:42,490 INFO L226 Difference]: Without dead ends: 3150 [2020-12-22 10:23:42,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:23:42,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3150 states. [2020-12-22 10:23:42,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3150 to 3150. [2020-12-22 10:23:42,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3150 states. [2020-12-22 10:23:42,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3150 states to 3150 states and 4445 transitions. [2020-12-22 10:23:42,590 INFO L78 Accepts]: Start accepts. Automaton has 3150 states and 4445 transitions. Word has length 105 [2020-12-22 10:23:42,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:23:42,592 INFO L481 AbstractCegarLoop]: Abstraction has 3150 states and 4445 transitions. [2020-12-22 10:23:42,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:23:42,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3150 states and 4445 transitions. [2020-12-22 10:23:42,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:23:42,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:23:42,596 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] [2020-12-22 10:23:42,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:23:42,597 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:23:42,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:23:42,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1090783836, now seen corresponding path program 1 times [2020-12-22 10:23:42,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:23:42,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929878765] [2020-12-22 10:23:42,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:23:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:23:42,739 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 10:23:42,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929878765] [2020-12-22 10:23:42,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:23:42,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:23:42,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777535912] [2020-12-22 10:23:42,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:23:42,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:23:42,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:23:42,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:23:42,745 INFO L87 Difference]: Start difference. First operand 3150 states and 4445 transitions. Second operand 3 states. [2020-12-22 10:23:42,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:23:42,792 INFO L93 Difference]: Finished difference Result 3296 states and 4677 transitions. [2020-12-22 10:23:42,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:23:42,792 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:23:42,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:23:42,812 INFO L225 Difference]: With dead ends: 3296 [2020-12-22 10:23:42,812 INFO L226 Difference]: Without dead ends: 3220 [2020-12-22 10:23:42,815 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 10:23:42,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2020-12-22 10:23:42,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3218. [2020-12-22 10:23:42,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3218 states. [2020-12-22 10:23:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 4554 transitions. [2020-12-22 10:23:42,900 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 4554 transitions. Word has length 106 [2020-12-22 10:23:42,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:23:42,902 INFO L481 AbstractCegarLoop]: Abstraction has 3218 states and 4554 transitions. [2020-12-22 10:23:42,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:23:42,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 4554 transitions. [2020-12-22 10:23:42,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:23:42,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:23:42,910 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] [2020-12-22 10:23:42,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:23:42,910 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:23:42,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:23:42,911 INFO L82 PathProgramCache]: Analyzing trace with hash 326222874, now seen corresponding path program 1 times [2020-12-22 10:23:42,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:23:42,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827140349] [2020-12-22 10:23:42,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:23:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:23:43,053 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 10:23:43,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827140349] [2020-12-22 10:23:43,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:23:43,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:23:43,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202786185] [2020-12-22 10:23:43,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:23:43,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:23:43,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:23:43,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:23:43,057 INFO L87 Difference]: Start difference. First operand 3218 states and 4554 transitions. Second operand 3 states. [2020-12-22 10:23:43,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:23:43,109 INFO L93 Difference]: Finished difference Result 3494 states and 4994 transitions. [2020-12-22 10:23:43,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:23:43,110 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:23:43,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:23:43,128 INFO L225 Difference]: With dead ends: 3494 [2020-12-22 10:23:43,128 INFO L226 Difference]: Without dead ends: 3350 [2020-12-22 10:23:43,130 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 10:23:43,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3350 states. [2020-12-22 10:23:43,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3350 to 3348. [2020-12-22 10:23:43,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3348 states. [2020-12-22 10:23:43,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3348 states to 3348 states and 4761 transitions. [2020-12-22 10:23:43,213 INFO L78 Accepts]: Start accepts. Automaton has 3348 states and 4761 transitions. Word has length 106 [2020-12-22 10:23:43,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:23:43,214 INFO L481 AbstractCegarLoop]: Abstraction has 3348 states and 4761 transitions. [2020-12-22 10:23:43,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:23:43,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3348 states and 4761 transitions. [2020-12-22 10:23:43,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:23:43,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:23:43,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:23:43,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:23:43,216 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:23:43,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:23:43,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1573731728, now seen corresponding path program 1 times [2020-12-22 10:23:43,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:23:43,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350971995] [2020-12-22 10:23:43,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:23:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:23:43,321 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 10:23:43,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350971995] [2020-12-22 10:23:43,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:23:43,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:23:43,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517813474] [2020-12-22 10:23:43,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:23:43,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:23:43,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:23:43,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:23:43,324 INFO L87 Difference]: Start difference. First operand 3348 states and 4761 transitions. Second operand 3 states. [2020-12-22 10:23:43,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:23:43,393 INFO L93 Difference]: Finished difference Result 3872 states and 5595 transitions. [2020-12-22 10:23:43,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:23:43,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:23:43,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:23:43,416 INFO L225 Difference]: With dead ends: 3872 [2020-12-22 10:23:43,416 INFO L226 Difference]: Without dead ends: 3598 [2020-12-22 10:23:43,419 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 10:23:43,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3598 states. [2020-12-22 10:23:43,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3598 to 3596. [2020-12-22 10:23:43,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3596 states. [2020-12-22 10:23:43,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5153 transitions. [2020-12-22 10:23:43,519 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5153 transitions. Word has length 106 [2020-12-22 10:23:43,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:23:43,520 INFO L481 AbstractCegarLoop]: Abstraction has 3596 states and 5153 transitions. [2020-12-22 10:23:43,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:23:43,520 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5153 transitions. [2020-12-22 10:23:43,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:23:43,522 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:23:43,522 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] [2020-12-22 10:23:43,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:23:43,523 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:23:43,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:23:43,528 INFO L82 PathProgramCache]: Analyzing trace with hash 832299526, now seen corresponding path program 1 times [2020-12-22 10:23:43,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:23:43,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9101106] [2020-12-22 10:23:43,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:23:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:23:43,652 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 10:23:43,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9101106] [2020-12-22 10:23:43,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:23:43,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:23:43,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286096643] [2020-12-22 10:23:43,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:23:43,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:23:43,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:23:43,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:23:43,656 INFO L87 Difference]: Start difference. First operand 3596 states and 5153 transitions. Second operand 3 states. [2020-12-22 10:23:43,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:23:43,717 INFO L93 Difference]: Finished difference Result 4592 states and 6731 transitions. [2020-12-22 10:23:43,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:23:43,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:23:43,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:23:43,740 INFO L225 Difference]: With dead ends: 4592 [2020-12-22 10:23:43,740 INFO L226 Difference]: Without dead ends: 4070 [2020-12-22 10:23:43,744 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 10:23:43,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2020-12-22 10:23:43,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 4068. [2020-12-22 10:23:43,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4068 states. [2020-12-22 10:23:43,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4068 states to 4068 states and 5893 transitions. [2020-12-22 10:23:43,858 INFO L78 Accepts]: Start accepts. Automaton has 4068 states and 5893 transitions. Word has length 106 [2020-12-22 10:23:43,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:23:43,858 INFO L481 AbstractCegarLoop]: Abstraction has 4068 states and 5893 transitions. [2020-12-22 10:23:43,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:23:43,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4068 states and 5893 transitions. [2020-12-22 10:23:43,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:23:43,860 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:23:43,860 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] [2020-12-22 10:23:43,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:23:43,860 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:23:43,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:23:43,861 INFO L82 PathProgramCache]: Analyzing trace with hash 2050284924, now seen corresponding path program 1 times [2020-12-22 10:23:43,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:23:43,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632237511] [2020-12-22 10:23:43,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:23:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:23:44,074 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 10:23:44,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632237511] [2020-12-22 10:23:44,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:23:44,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:23:44,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739940660] [2020-12-22 10:23:44,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:23:44,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:23:44,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:23:44,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:23:44,077 INFO L87 Difference]: Start difference. First operand 4068 states and 5893 transitions. Second operand 10 states. [2020-12-22 10:23:45,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:23:45,296 INFO L93 Difference]: Finished difference Result 19972 states and 30997 transitions. [2020-12-22 10:23:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 10:23:45,297 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 106 [2020-12-22 10:23:45,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:23:45,363 INFO L225 Difference]: With dead ends: 19972 [2020-12-22 10:23:45,363 INFO L226 Difference]: Without dead ends: 18978 [2020-12-22 10:23:45,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-12-22 10:23:45,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18978 states. [2020-12-22 10:23:45,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18978 to 5060. [2020-12-22 10:23:45,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5060 states. [2020-12-22 10:23:45,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5060 states to 5060 states and 7429 transitions. [2020-12-22 10:23:45,734 INFO L78 Accepts]: Start accepts. Automaton has 5060 states and 7429 transitions. Word has length 106 [2020-12-22 10:23:45,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:23:45,734 INFO L481 AbstractCegarLoop]: Abstraction has 5060 states and 7429 transitions. [2020-12-22 10:23:45,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:23:45,734 INFO L276 IsEmpty]: Start isEmpty. Operand 5060 states and 7429 transitions. [2020-12-22 10:23:45,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 10:23:45,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:23:45,736 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:23:45,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:23:45,736 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:23:45,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:23:45,737 INFO L82 PathProgramCache]: Analyzing trace with hash -2042192316, now seen corresponding path program 1 times [2020-12-22 10:23:45,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:23:45,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464987534] [2020-12-22 10:23:45,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:23:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:23:45,874 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:23:45,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464987534] [2020-12-22 10:23:45,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:23:45,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:23:45,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278509871] [2020-12-22 10:23:45,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:23:45,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:23:45,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:23:45,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:23:45,877 INFO L87 Difference]: Start difference. First operand 5060 states and 7429 transitions. Second operand 4 states. [2020-12-22 10:23:55,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:23:55,011 INFO L93 Difference]: Finished difference Result 11821 states and 16773 transitions. [2020-12-22 10:23:55,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 10:23:55,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-12-22 10:23:55,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:23:55,032 INFO L225 Difference]: With dead ends: 11821 [2020-12-22 10:23:55,032 INFO L226 Difference]: Without dead ends: 8815 [2020-12-22 10:23:55,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:23:55,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8815 states. [2020-12-22 10:23:55,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8815 to 8815. [2020-12-22 10:23:55,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8815 states. [2020-12-22 10:23:55,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8815 states to 8815 states and 12066 transitions. [2020-12-22 10:23:55,316 INFO L78 Accepts]: Start accepts. Automaton has 8815 states and 12066 transitions. Word has length 107 [2020-12-22 10:23:55,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:23:55,317 INFO L481 AbstractCegarLoop]: Abstraction has 8815 states and 12066 transitions. [2020-12-22 10:23:55,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:23:55,317 INFO L276 IsEmpty]: Start isEmpty. Operand 8815 states and 12066 transitions. [2020-12-22 10:23:55,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:23:55,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:23:55,319 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] [2020-12-22 10:23:55,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:23:55,319 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:23:55,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:23:55,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1813103660, now seen corresponding path program 1 times [2020-12-22 10:23:55,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:23:55,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125331422] [2020-12-22 10:23:55,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:23:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:23:55,429 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 10:23:55,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125331422] [2020-12-22 10:23:55,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:23:55,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:23:55,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740210660] [2020-12-22 10:23:55,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:23:55,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:23:55,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:23:55,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:23:55,432 INFO L87 Difference]: Start difference. First operand 8815 states and 12066 transitions. Second operand 3 states. [2020-12-22 10:23:55,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:23:55,675 INFO L93 Difference]: Finished difference Result 11757 states and 16662 transitions. [2020-12-22 10:23:55,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:23:55,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 10:23:55,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:23:55,697 INFO L225 Difference]: With dead ends: 11757 [2020-12-22 10:23:55,697 INFO L226 Difference]: Without dead ends: 9771 [2020-12-22 10:23:55,704 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 10:23:55,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9771 states. [2020-12-22 10:23:55,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9771 to 9769. [2020-12-22 10:23:55,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9769 states. [2020-12-22 10:23:56,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9769 states to 9769 states and 13532 transitions. [2020-12-22 10:23:56,014 INFO L78 Accepts]: Start accepts. Automaton has 9769 states and 13532 transitions. Word has length 108 [2020-12-22 10:23:56,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:23:56,015 INFO L481 AbstractCegarLoop]: Abstraction has 9769 states and 13532 transitions. [2020-12-22 10:23:56,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:23:56,015 INFO L276 IsEmpty]: Start isEmpty. Operand 9769 states and 13532 transitions. [2020-12-22 10:23:56,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:23:56,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:23:56,017 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] [2020-12-22 10:23:56,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:23:56,017 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:23:56,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:23:56,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1879597172, now seen corresponding path program 1 times [2020-12-22 10:23:56,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:23:56,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104133598] [2020-12-22 10:23:56,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:23:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:23:56,564 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 10:23:56,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104133598] [2020-12-22 10:23:56,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:23:56,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:23:56,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347773778] [2020-12-22 10:23:56,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:23:56,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:23:56,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:23:56,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:23:56,567 INFO L87 Difference]: Start difference. First operand 9769 states and 13532 transitions. Second operand 10 states. [2020-12-22 10:23:57,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:23:57,412 INFO L93 Difference]: Finished difference Result 12709 states and 18102 transitions. [2020-12-22 10:23:57,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:23:57,413 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-12-22 10:23:57,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:23:57,436 INFO L225 Difference]: With dead ends: 12709 [2020-12-22 10:23:57,436 INFO L226 Difference]: Without dead ends: 9771 [2020-12-22 10:23:57,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-12-22 10:23:57,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9771 states. [2020-12-22 10:23:57,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9771 to 9769. [2020-12-22 10:23:57,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9769 states. [2020-12-22 10:23:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9769 states to 9769 states and 13508 transitions. [2020-12-22 10:23:57,776 INFO L78 Accepts]: Start accepts. Automaton has 9769 states and 13508 transitions. Word has length 108 [2020-12-22 10:23:57,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:23:57,776 INFO L481 AbstractCegarLoop]: Abstraction has 9769 states and 13508 transitions. [2020-12-22 10:23:57,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:23:57,777 INFO L276 IsEmpty]: Start isEmpty. Operand 9769 states and 13508 transitions. [2020-12-22 10:23:57,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:23:57,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:23:57,778 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] [2020-12-22 10:23:57,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:23:57,779 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:23:57,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:23:57,779 INFO L82 PathProgramCache]: Analyzing trace with hash 621051568, now seen corresponding path program 1 times [2020-12-22 10:23:57,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:23:57,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105458239] [2020-12-22 10:23:57,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:23:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:23:57,866 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 10:23:57,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105458239] [2020-12-22 10:23:57,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:23:57,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:23:57,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175647564] [2020-12-22 10:23:57,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:23:57,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:23:57,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:23:57,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:23:57,869 INFO L87 Difference]: Start difference. First operand 9769 states and 13508 transitions. Second operand 3 states. [2020-12-22 10:23:58,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:23:58,227 INFO L93 Difference]: Finished difference Result 15357 states and 22118 transitions. [2020-12-22 10:23:58,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:23:58,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 10:23:58,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:23:58,255 INFO L225 Difference]: With dead ends: 15357 [2020-12-22 10:23:58,255 INFO L226 Difference]: Without dead ends: 12419 [2020-12-22 10:23:58,264 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 10:23:58,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12419 states. [2020-12-22 10:23:58,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12419 to 12417. [2020-12-22 10:23:58,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12417 states. [2020-12-22 10:23:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12417 states to 12417 states and 17524 transitions. [2020-12-22 10:23:58,720 INFO L78 Accepts]: Start accepts. Automaton has 12417 states and 17524 transitions. Word has length 108 [2020-12-22 10:23:58,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:23:58,721 INFO L481 AbstractCegarLoop]: Abstraction has 12417 states and 17524 transitions. [2020-12-22 10:23:58,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:23:58,721 INFO L276 IsEmpty]: Start isEmpty. Operand 12417 states and 17524 transitions. [2020-12-22 10:23:58,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:23:58,723 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:23:58,723 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] [2020-12-22 10:23:58,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:23:58,723 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:23:58,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:23:58,724 INFO L82 PathProgramCache]: Analyzing trace with hash 894739280, now seen corresponding path program 1 times [2020-12-22 10:23:58,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:23:58,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891921951] [2020-12-22 10:23:58,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:23:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:23:58,816 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 10:23:58,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891921951] [2020-12-22 10:23:58,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:23:58,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:23:58,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845035855] [2020-12-22 10:23:58,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:23:58,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:23:58,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:23:58,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:23:58,819 INFO L87 Difference]: Start difference. First operand 12417 states and 17524 transitions. Second operand 3 states. [2020-12-22 10:23:59,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:23:59,668 INFO L93 Difference]: Finished difference Result 23013 states and 33686 transitions. [2020-12-22 10:23:59,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:23:59,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 10:23:59,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:23:59,707 INFO L225 Difference]: With dead ends: 23013 [2020-12-22 10:23:59,708 INFO L226 Difference]: Without dead ends: 17427 [2020-12-22 10:23:59,722 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 10:23:59,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17427 states. [2020-12-22 10:24:00,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17427 to 17425. [2020-12-22 10:24:00,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17425 states. [2020-12-22 10:24:00,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17425 states to 17425 states and 25028 transitions. [2020-12-22 10:24:00,595 INFO L78 Accepts]: Start accepts. Automaton has 17425 states and 25028 transitions. Word has length 108 [2020-12-22 10:24:00,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:00,595 INFO L481 AbstractCegarLoop]: Abstraction has 17425 states and 25028 transitions. [2020-12-22 10:24:00,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:00,596 INFO L276 IsEmpty]: Start isEmpty. Operand 17425 states and 25028 transitions. [2020-12-22 10:24:00,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:24:00,597 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:00,597 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] [2020-12-22 10:24:00,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:24:00,598 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:00,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:00,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1581156368, now seen corresponding path program 1 times [2020-12-22 10:24:00,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:00,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097816159] [2020-12-22 10:24:00,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:00,693 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 10:24:00,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097816159] [2020-12-22 10:24:00,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:00,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:00,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127139064] [2020-12-22 10:24:00,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:00,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:00,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:00,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:00,696 INFO L87 Difference]: Start difference. First operand 17425 states and 25028 transitions. Second operand 3 states. [2020-12-22 10:24:01,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:01,972 INFO L93 Difference]: Finished difference Result 37461 states and 55238 transitions. [2020-12-22 10:24:01,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:01,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 10:24:01,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:02,026 INFO L225 Difference]: With dead ends: 37461 [2020-12-22 10:24:02,026 INFO L226 Difference]: Without dead ends: 26867 [2020-12-22 10:24:02,045 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 10:24:02,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26867 states. [2020-12-22 10:24:03,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26867 to 26865. [2020-12-22 10:24:03,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26865 states. [2020-12-22 10:24:03,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26865 states to 26865 states and 38980 transitions. [2020-12-22 10:24:03,730 INFO L78 Accepts]: Start accepts. Automaton has 26865 states and 38980 transitions. Word has length 108 [2020-12-22 10:24:03,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:03,730 INFO L481 AbstractCegarLoop]: Abstraction has 26865 states and 38980 transitions. [2020-12-22 10:24:03,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:03,730 INFO L276 IsEmpty]: Start isEmpty. Operand 26865 states and 38980 transitions. [2020-12-22 10:24:03,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:24:03,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:03,732 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] [2020-12-22 10:24:03,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:24:03,733 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:03,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:03,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1401750384, now seen corresponding path program 1 times [2020-12-22 10:24:03,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:03,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971996167] [2020-12-22 10:24:03,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:03,812 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 10:24:03,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971996167] [2020-12-22 10:24:03,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:03,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:03,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573065955] [2020-12-22 10:24:03,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:03,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:03,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:03,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:03,815 INFO L87 Difference]: Start difference. First operand 26865 states and 38980 transitions. Second operand 3 states. [2020-12-22 10:24:05,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:05,675 INFO L93 Difference]: Finished difference Result 64629 states and 95174 transitions. [2020-12-22 10:24:05,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:05,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 10:24:05,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:05,756 INFO L225 Difference]: With dead ends: 64629 [2020-12-22 10:24:05,756 INFO L226 Difference]: Without dead ends: 44595 [2020-12-22 10:24:05,814 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 10:24:05,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44595 states. [2020-12-22 10:24:07,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44595 to 44593. [2020-12-22 10:24:07,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44593 states. [2020-12-22 10:24:07,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44593 states to 44593 states and 64772 transitions. [2020-12-22 10:24:07,870 INFO L78 Accepts]: Start accepts. Automaton has 44593 states and 64772 transitions. Word has length 108 [2020-12-22 10:24:07,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:07,870 INFO L481 AbstractCegarLoop]: Abstraction has 44593 states and 64772 transitions. [2020-12-22 10:24:07,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:07,870 INFO L276 IsEmpty]: Start isEmpty. Operand 44593 states and 64772 transitions. [2020-12-22 10:24:07,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 10:24:07,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:07,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:24:07,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:24:07,873 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:07,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:07,873 INFO L82 PathProgramCache]: Analyzing trace with hash 2018214719, now seen corresponding path program 1 times [2020-12-22 10:24:07,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:07,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610894747] [2020-12-22 10:24:07,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:08,214 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 10:24:08,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610894747] [2020-12-22 10:24:08,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:08,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:24:08,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786345982] [2020-12-22 10:24:08,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:24:08,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:08,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:24:08,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:24:08,216 INFO L87 Difference]: Start difference. First operand 44593 states and 64772 transitions. Second operand 8 states. [2020-12-22 10:24:11,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:11,775 INFO L93 Difference]: Finished difference Result 76760 states and 111349 transitions. [2020-12-22 10:24:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:24:11,776 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-12-22 10:24:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:11,865 INFO L225 Difference]: With dead ends: 76760 [2020-12-22 10:24:11,865 INFO L226 Difference]: Without dead ends: 76758 [2020-12-22 10:24:11,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:24:11,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76758 states. [2020-12-22 10:24:14,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76758 to 46129. [2020-12-22 10:24:14,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46129 states. [2020-12-22 10:24:14,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46129 states to 46129 states and 66180 transitions. [2020-12-22 10:24:14,941 INFO L78 Accepts]: Start accepts. Automaton has 46129 states and 66180 transitions. Word has length 109 [2020-12-22 10:24:14,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:14,941 INFO L481 AbstractCegarLoop]: Abstraction has 46129 states and 66180 transitions. [2020-12-22 10:24:14,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:24:14,941 INFO L276 IsEmpty]: Start isEmpty. Operand 46129 states and 66180 transitions. [2020-12-22 10:24:14,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 10:24:14,965 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:14,966 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:24:14,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:24:14,966 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:14,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:14,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1243757929, now seen corresponding path program 1 times [2020-12-22 10:24:14,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:14,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952110746] [2020-12-22 10:24:14,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:15,189 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 10:24:15,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952110746] [2020-12-22 10:24:15,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:15,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:24:15,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862166864] [2020-12-22 10:24:15,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:24:15,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:15,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:24:15,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:24:15,192 INFO L87 Difference]: Start difference. First operand 46129 states and 66180 transitions. Second operand 10 states. [2020-12-22 10:24:33,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:33,532 INFO L93 Difference]: Finished difference Result 368067 states and 534477 transitions. [2020-12-22 10:24:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:24:33,533 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-12-22 10:24:33,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:34,335 INFO L225 Difference]: With dead ends: 368067 [2020-12-22 10:24:34,335 INFO L226 Difference]: Without dead ends: 328769 [2020-12-22 10:24:34,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:24:34,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328769 states. [2020-12-22 10:24:41,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328769 to 85425. [2020-12-22 10:24:41,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85425 states. [2020-12-22 10:24:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85425 states to 85425 states and 123012 transitions. [2020-12-22 10:24:42,123 INFO L78 Accepts]: Start accepts. Automaton has 85425 states and 123012 transitions. Word has length 149 [2020-12-22 10:24:42,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:42,123 INFO L481 AbstractCegarLoop]: Abstraction has 85425 states and 123012 transitions. [2020-12-22 10:24:42,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:24:42,125 INFO L276 IsEmpty]: Start isEmpty. Operand 85425 states and 123012 transitions. [2020-12-22 10:24:42,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 10:24:42,173 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:42,173 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:24:42,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:24:42,174 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:42,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:42,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1273280147, now seen corresponding path program 1 times [2020-12-22 10:24:42,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:42,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508996781] [2020-12-22 10:24:42,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:42,609 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 10:24:42,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508996781] [2020-12-22 10:24:42,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:42,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:24:42,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818855992] [2020-12-22 10:24:42,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:24:42,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:42,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:24:42,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:24:42,612 INFO L87 Difference]: Start difference. First operand 85425 states and 123012 transitions. Second operand 10 states. [2020-12-22 10:25:05,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:25:05,594 INFO L93 Difference]: Finished difference Result 407363 states and 591309 transitions. [2020-12-22 10:25:05,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:25:05,595 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-12-22 10:25:05,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:25:06,376 INFO L225 Difference]: With dead ends: 407363 [2020-12-22 10:25:06,376 INFO L226 Difference]: Without dead ends: 368065 [2020-12-22 10:25:06,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:25:06,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368065 states. [2020-12-22 10:25:18,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368065 to 144433. [2020-12-22 10:25:18,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144433 states. [2020-12-22 10:25:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144433 states to 144433 states and 207940 transitions. [2020-12-22 10:25:18,487 INFO L78 Accepts]: Start accepts. Automaton has 144433 states and 207940 transitions. Word has length 149 [2020-12-22 10:25:18,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:25:18,488 INFO L481 AbstractCegarLoop]: Abstraction has 144433 states and 207940 transitions. [2020-12-22 10:25:18,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:25:18,488 INFO L276 IsEmpty]: Start isEmpty. Operand 144433 states and 207940 transitions. [2020-12-22 10:25:18,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 10:25:18,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:25:18,519 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:25:18,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:25:18,520 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:25:18,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:25:18,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1546967859, now seen corresponding path program 1 times [2020-12-22 10:25:18,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:25:18,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642941049] [2020-12-22 10:25:18,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:25:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:25:19,041 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 10:25:19,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642941049] [2020-12-22 10:25:19,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:25:19,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:25:19,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078518841] [2020-12-22 10:25:19,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:25:19,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:25:19,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:25:19,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:25:19,047 INFO L87 Difference]: Start difference. First operand 144433 states and 207940 transitions. Second operand 10 states. [2020-12-22 10:25:46,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:25:46,424 INFO L93 Difference]: Finished difference Result 446659 states and 648141 transitions. [2020-12-22 10:25:46,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:25:46,425 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-12-22 10:25:46,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:25:47,245 INFO L225 Difference]: With dead ends: 446659 [2020-12-22 10:25:47,246 INFO L226 Difference]: Without dead ends: 407361 [2020-12-22 10:25:47,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:25:47,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407361 states. [2020-12-22 10:26:02,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407361 to 183729. [2020-12-22 10:26:02,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183729 states. [2020-12-22 10:26:03,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183729 states to 183729 states and 264772 transitions. [2020-12-22 10:26:03,122 INFO L78 Accepts]: Start accepts. Automaton has 183729 states and 264772 transitions. Word has length 149 [2020-12-22 10:26:03,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:26:03,130 INFO L481 AbstractCegarLoop]: Abstraction has 183729 states and 264772 transitions. [2020-12-22 10:26:03,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:26:03,130 INFO L276 IsEmpty]: Start isEmpty. Operand 183729 states and 264772 transitions. [2020-12-22 10:26:03,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 10:26:03,156 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:26:03,156 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:26:03,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:26:03,157 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:26:03,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:26:03,158 INFO L82 PathProgramCache]: Analyzing trace with hash -928927789, now seen corresponding path program 1 times [2020-12-22 10:26:03,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:26:03,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076473335] [2020-12-22 10:26:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:26:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:26:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 10:26:03,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076473335] [2020-12-22 10:26:03,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:26:03,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:26:03,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691034151] [2020-12-22 10:26:03,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:26:03,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:26:03,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:26:03,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:26:03,416 INFO L87 Difference]: Start difference. First operand 183729 states and 264772 transitions. Second operand 10 states. [2020-12-22 10:26:37,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:26:37,140 INFO L93 Difference]: Finished difference Result 485955 states and 704973 transitions. [2020-12-22 10:26:37,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:26:37,141 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-12-22 10:26:37,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:26:38,040 INFO L225 Difference]: With dead ends: 485955 [2020-12-22 10:26:38,040 INFO L226 Difference]: Without dead ends: 446657 [2020-12-22 10:26:38,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:26:38,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446657 states.