/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:49:32,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:49:32,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:49:32,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:49:32,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:49:32,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:49:32,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:49:32,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:49:32,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:49:32,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:49:32,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:49:32,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:49:32,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:49:32,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:49:32,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:49:32,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:49:32,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:49:32,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:49:32,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:49:32,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:49:32,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:49:32,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:49:32,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:49:32,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:49:32,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:49:32,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:49:32,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:49:32,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:49:32,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:49:32,606 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:49:32,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:49:32,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:49:32,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:49:32,609 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:49:32,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:49:32,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:49:32,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:49:32,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:49:32,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:49:32,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:49:32,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:49:32,612 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:49:32,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:49:32,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:49:32,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:49:32,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:49:32,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:49:32,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:49:32,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:49:32,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:49:32,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:49:32,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:49:32,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:49:32,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:49:32,615 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:49:33,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:49:33,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:49:33,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:49:33,058 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:49:33,059 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:49:33,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-12-22 08:49:33,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb54ff7b2/bd2117c63a4f4ed38a0566ec3cbb6027/FLAG5100c9eeb [2020-12-22 08:49:33,835 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:49:33,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-12-22 08:49:33,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb54ff7b2/bd2117c63a4f4ed38a0566ec3cbb6027/FLAG5100c9eeb [2020-12-22 08:49:34,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb54ff7b2/bd2117c63a4f4ed38a0566ec3cbb6027 [2020-12-22 08:49:34,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:49:34,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:49:34,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:49:34,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:49:34,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:49:34,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:49:34" (1/1) ... [2020-12-22 08:49:34,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3743f6ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:34, skipping insertion in model container [2020-12-22 08:49:34,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:49:34" (1/1) ... [2020-12-22 08:49:34,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:49:34,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:49:34,678 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[16034,16047] [2020-12-22 08:49:34,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:49:34,901 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:49:35,120 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[16034,16047] [2020-12-22 08:49:35,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:49:35,230 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:49:35,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:35 WrapperNode [2020-12-22 08:49:35,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:49:35,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:49:35,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:49:35,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:49:35,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:35" (1/1) ... [2020-12-22 08:49:35,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:35" (1/1) ... [2020-12-22 08:49:35,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:49:35,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:49:35,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:49:35,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:49:35,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:35" (1/1) ... [2020-12-22 08:49:35,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:35" (1/1) ... [2020-12-22 08:49:35,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:35" (1/1) ... [2020-12-22 08:49:35,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:35" (1/1) ... [2020-12-22 08:49:35,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:35" (1/1) ... [2020-12-22 08:49:35,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:35" (1/1) ... [2020-12-22 08:49:35,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:35" (1/1) ... [2020-12-22 08:49:35,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:49:35,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:49:35,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:49:35,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:49:35,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:49:35,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:49:35,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:49:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:49:35,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:49:36,863 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:49:36,864 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:49:36,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:49:36 BoogieIcfgContainer [2020-12-22 08:49:36,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:49:36,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:49:36,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:49:36,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:49:36,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:49:34" (1/3) ... [2020-12-22 08:49:36,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c23def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:49:36, skipping insertion in model container [2020-12-22 08:49:36,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:35" (2/3) ... [2020-12-22 08:49:36,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c23def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:49:36, skipping insertion in model container [2020-12-22 08:49:36,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:49:36" (3/3) ... [2020-12-22 08:49:36,875 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-12-22 08:49:36,882 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:49:36,887 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:49:36,904 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:49:36,934 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:49:36,934 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:49:36,934 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:49:36,934 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:49:36,934 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:49:36,935 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:49:36,935 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:49:36,935 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:49:36,959 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states. [2020-12-22 08:49:36,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 08:49:36,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:36,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:36,980 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:36,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:36,987 INFO L82 PathProgramCache]: Analyzing trace with hash -611897646, now seen corresponding path program 1 times [2020-12-22 08:49:36,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:36,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278674203] [2020-12-22 08:49:36,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:37,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:49:37,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278674203] [2020-12-22 08:49:37,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:37,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:49:37,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782925482] [2020-12-22 08:49:37,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:49:37,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:37,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:49:37,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:49:37,479 INFO L87 Difference]: Start difference. First operand 390 states. Second operand 4 states. [2020-12-22 08:49:37,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:37,762 INFO L93 Difference]: Finished difference Result 744 states and 1212 transitions. [2020-12-22 08:49:37,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:49:37,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-12-22 08:49:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:37,796 INFO L225 Difference]: With dead ends: 744 [2020-12-22 08:49:37,796 INFO L226 Difference]: Without dead ends: 387 [2020-12-22 08:49:37,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:49:37,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-12-22 08:49:37,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2020-12-22 08:49:37,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-12-22 08:49:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 592 transitions. [2020-12-22 08:49:37,897 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 592 transitions. Word has length 147 [2020-12-22 08:49:37,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:37,897 INFO L481 AbstractCegarLoop]: Abstraction has 387 states and 592 transitions. [2020-12-22 08:49:37,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:49:37,898 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 592 transitions. [2020-12-22 08:49:37,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-12-22 08:49:37,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:37,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:37,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:49:37,905 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:37,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:37,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1840842835, now seen corresponding path program 1 times [2020-12-22 08:49:37,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:37,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137848884] [2020-12-22 08:49:37,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:49:38,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137848884] [2020-12-22 08:49:38,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:38,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:49:38,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738277989] [2020-12-22 08:49:38,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:49:38,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:38,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:49:38,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:49:38,187 INFO L87 Difference]: Start difference. First operand 387 states and 592 transitions. Second operand 3 states. [2020-12-22 08:49:38,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:38,322 INFO L93 Difference]: Finished difference Result 961 states and 1508 transitions. [2020-12-22 08:49:38,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:49:38,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2020-12-22 08:49:38,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:38,331 INFO L225 Difference]: With dead ends: 961 [2020-12-22 08:49:38,332 INFO L226 Difference]: Without dead ends: 624 [2020-12-22 08:49:38,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:49:38,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-12-22 08:49:38,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 622. [2020-12-22 08:49:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2020-12-22 08:49:38,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 964 transitions. [2020-12-22 08:49:38,414 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 964 transitions. Word has length 186 [2020-12-22 08:49:38,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:38,417 INFO L481 AbstractCegarLoop]: Abstraction has 622 states and 964 transitions. [2020-12-22 08:49:38,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:49:38,418 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 964 transitions. [2020-12-22 08:49:38,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-12-22 08:49:38,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:38,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:38,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:49:38,431 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:38,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:38,432 INFO L82 PathProgramCache]: Analyzing trace with hash -650834640, now seen corresponding path program 1 times [2020-12-22 08:49:38,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:38,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206183074] [2020-12-22 08:49:38,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:49:38,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206183074] [2020-12-22 08:49:38,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:38,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:49:38,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251065274] [2020-12-22 08:49:38,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:49:38,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:38,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:49:38,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:49:38,756 INFO L87 Difference]: Start difference. First operand 622 states and 964 transitions. Second operand 3 states. [2020-12-22 08:49:38,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:38,886 INFO L93 Difference]: Finished difference Result 1620 states and 2553 transitions. [2020-12-22 08:49:38,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:49:38,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2020-12-22 08:49:38,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:38,899 INFO L225 Difference]: With dead ends: 1620 [2020-12-22 08:49:38,899 INFO L226 Difference]: Without dead ends: 1054 [2020-12-22 08:49:38,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:49:38,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2020-12-22 08:49:38,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1052. [2020-12-22 08:49:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-12-22 08:49:38,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1642 transitions. [2020-12-22 08:49:38,977 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1642 transitions. Word has length 189 [2020-12-22 08:49:38,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:38,987 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1642 transitions. [2020-12-22 08:49:38,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:49:38,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1642 transitions. [2020-12-22 08:49:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-12-22 08:49:38,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:38,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:38,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:49:38,996 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:38,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:38,997 INFO L82 PathProgramCache]: Analyzing trace with hash -163364614, now seen corresponding path program 1 times [2020-12-22 08:49:38,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:38,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697769214] [2020-12-22 08:49:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:49:39,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697769214] [2020-12-22 08:49:39,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:39,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:49:39,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629044972] [2020-12-22 08:49:39,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:49:39,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:39,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:49:39,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:49:39,272 INFO L87 Difference]: Start difference. First operand 1052 states and 1642 transitions. Second operand 3 states. [2020-12-22 08:49:39,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:39,427 INFO L93 Difference]: Finished difference Result 2820 states and 4445 transitions. [2020-12-22 08:49:39,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:49:39,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2020-12-22 08:49:39,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:39,440 INFO L225 Difference]: With dead ends: 2820 [2020-12-22 08:49:39,441 INFO L226 Difference]: Without dead ends: 1830 [2020-12-22 08:49:39,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:49:39,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2020-12-22 08:49:39,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1828. [2020-12-22 08:49:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1828 states. [2020-12-22 08:49:39,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2858 transitions. [2020-12-22 08:49:39,541 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2858 transitions. Word has length 192 [2020-12-22 08:49:39,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:39,542 INFO L481 AbstractCegarLoop]: Abstraction has 1828 states and 2858 transitions. [2020-12-22 08:49:39,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:49:39,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2858 transitions. [2020-12-22 08:49:39,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-12-22 08:49:39,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:39,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:39,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:49:39,549 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:39,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:39,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1476600599, now seen corresponding path program 1 times [2020-12-22 08:49:39,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:39,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819513613] [2020-12-22 08:49:39,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:49:39,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819513613] [2020-12-22 08:49:39,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:39,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:49:39,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077568537] [2020-12-22 08:49:39,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:49:39,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:39,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:49:39,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:49:39,700 INFO L87 Difference]: Start difference. First operand 1828 states and 2858 transitions. Second operand 3 states. [2020-12-22 08:49:39,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:39,916 INFO L93 Difference]: Finished difference Result 4970 states and 7809 transitions. [2020-12-22 08:49:39,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:49:39,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2020-12-22 08:49:39,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:39,936 INFO L225 Difference]: With dead ends: 4970 [2020-12-22 08:49:39,936 INFO L226 Difference]: Without dead ends: 3210 [2020-12-22 08:49:39,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:49:39,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2020-12-22 08:49:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 3208. [2020-12-22 08:49:40,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3208 states. [2020-12-22 08:49:40,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 5002 transitions. [2020-12-22 08:49:40,125 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 5002 transitions. Word has length 195 [2020-12-22 08:49:40,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:40,126 INFO L481 AbstractCegarLoop]: Abstraction has 3208 states and 5002 transitions. [2020-12-22 08:49:40,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:49:40,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 5002 transitions. [2020-12-22 08:49:40,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-12-22 08:49:40,135 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:40,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:40,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:49:40,136 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:40,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:40,136 INFO L82 PathProgramCache]: Analyzing trace with hash -947838087, now seen corresponding path program 1 times [2020-12-22 08:49:40,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:40,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041998754] [2020-12-22 08:49:40,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:49:40,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041998754] [2020-12-22 08:49:40,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:40,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:49:40,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188659395] [2020-12-22 08:49:40,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:49:40,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:40,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:49:40,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:49:40,332 INFO L87 Difference]: Start difference. First operand 3208 states and 5002 transitions. Second operand 3 states. [2020-12-22 08:49:40,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:40,648 INFO L93 Difference]: Finished difference Result 8756 states and 13673 transitions. [2020-12-22 08:49:40,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:49:40,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2020-12-22 08:49:40,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:40,682 INFO L225 Difference]: With dead ends: 8756 [2020-12-22 08:49:40,683 INFO L226 Difference]: Without dead ends: 5622 [2020-12-22 08:49:40,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:49:40,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5622 states. [2020-12-22 08:49:41,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5622 to 5620. [2020-12-22 08:49:41,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5620 states. [2020-12-22 08:49:41,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5620 states to 5620 states and 8706 transitions. [2020-12-22 08:49:41,140 INFO L78 Accepts]: Start accepts. Automaton has 5620 states and 8706 transitions. Word has length 198 [2020-12-22 08:49:41,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:41,141 INFO L481 AbstractCegarLoop]: Abstraction has 5620 states and 8706 transitions. [2020-12-22 08:49:41,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:49:41,142 INFO L276 IsEmpty]: Start isEmpty. Operand 5620 states and 8706 transitions. [2020-12-22 08:49:41,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-12-22 08:49:41,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:41,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:41,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:49:41,160 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:41,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:41,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1193734365, now seen corresponding path program 1 times [2020-12-22 08:49:41,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:41,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888027720] [2020-12-22 08:49:41,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:49:41,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888027720] [2020-12-22 08:49:41,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:41,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:49:41,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576960233] [2020-12-22 08:49:41,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:49:41,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:41,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:49:41,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:49:41,363 INFO L87 Difference]: Start difference. First operand 5620 states and 8706 transitions. Second operand 3 states. [2020-12-22 08:49:41,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:41,845 INFO L93 Difference]: Finished difference Result 15286 states and 23649 transitions. [2020-12-22 08:49:41,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:49:41,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2020-12-22 08:49:41,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:41,946 INFO L225 Difference]: With dead ends: 15286 [2020-12-22 08:49:41,946 INFO L226 Difference]: Without dead ends: 9746 [2020-12-22 08:49:41,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:49:41,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9746 states. [2020-12-22 08:49:42,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9746 to 9744. [2020-12-22 08:49:42,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9744 states. [2020-12-22 08:49:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9744 states to 9744 states and 14938 transitions. [2020-12-22 08:49:42,636 INFO L78 Accepts]: Start accepts. Automaton has 9744 states and 14938 transitions. Word has length 201 [2020-12-22 08:49:42,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:42,636 INFO L481 AbstractCegarLoop]: Abstraction has 9744 states and 14938 transitions. [2020-12-22 08:49:42,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:49:42,637 INFO L276 IsEmpty]: Start isEmpty. Operand 9744 states and 14938 transitions. [2020-12-22 08:49:42,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-12-22 08:49:42,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:42,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:42,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:49:42,662 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:42,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:42,663 INFO L82 PathProgramCache]: Analyzing trace with hash -260047853, now seen corresponding path program 1 times [2020-12-22 08:49:42,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:42,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814995667] [2020-12-22 08:49:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:49:42,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814995667] [2020-12-22 08:49:42,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:42,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:49:42,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482016907] [2020-12-22 08:49:42,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:49:42,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:42,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:49:42,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:49:42,780 INFO L87 Difference]: Start difference. First operand 9744 states and 14938 transitions. Second operand 3 states. [2020-12-22 08:49:44,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:44,148 INFO L93 Difference]: Finished difference Result 27434 states and 42051 transitions. [2020-12-22 08:49:44,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:49:44,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-12-22 08:49:44,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:44,209 INFO L225 Difference]: With dead ends: 27434 [2020-12-22 08:49:44,209 INFO L226 Difference]: Without dead ends: 19304 [2020-12-22 08:49:44,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:49:44,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19304 states. [2020-12-22 08:49:45,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19304 to 19302. [2020-12-22 08:49:45,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19302 states. [2020-12-22 08:49:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19302 states to 19302 states and 29457 transitions. [2020-12-22 08:49:45,316 INFO L78 Accepts]: Start accepts. Automaton has 19302 states and 29457 transitions. Word has length 204 [2020-12-22 08:49:45,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:45,316 INFO L481 AbstractCegarLoop]: Abstraction has 19302 states and 29457 transitions. [2020-12-22 08:49:45,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:49:45,316 INFO L276 IsEmpty]: Start isEmpty. Operand 19302 states and 29457 transitions. [2020-12-22 08:49:45,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-12-22 08:49:45,360 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:45,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:45,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:49:45,361 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:45,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:45,362 INFO L82 PathProgramCache]: Analyzing trace with hash -563444877, now seen corresponding path program 1 times [2020-12-22 08:49:45,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:45,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660519448] [2020-12-22 08:49:45,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:49:45,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660519448] [2020-12-22 08:49:45,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:45,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:49:45,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615829532] [2020-12-22 08:49:45,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:49:45,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:45,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:49:45,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:49:45,492 INFO L87 Difference]: Start difference. First operand 19302 states and 29457 transitions. Second operand 3 states. [2020-12-22 08:49:47,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:47,417 INFO L93 Difference]: Finished difference Result 53866 states and 82129 transitions. [2020-12-22 08:49:47,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:49:47,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-12-22 08:49:47,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:47,510 INFO L225 Difference]: With dead ends: 53866 [2020-12-22 08:49:47,511 INFO L226 Difference]: Without dead ends: 38264 [2020-12-22 08:49:47,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:49:47,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38264 states. [2020-12-22 08:49:49,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38264 to 38262. [2020-12-22 08:49:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38262 states. [2020-12-22 08:49:49,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38262 states to 38262 states and 58047 transitions. [2020-12-22 08:49:49,466 INFO L78 Accepts]: Start accepts. Automaton has 38262 states and 58047 transitions. Word has length 204 [2020-12-22 08:49:49,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:49,466 INFO L481 AbstractCegarLoop]: Abstraction has 38262 states and 58047 transitions. [2020-12-22 08:49:49,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:49:49,466 INFO L276 IsEmpty]: Start isEmpty. Operand 38262 states and 58047 transitions. [2020-12-22 08:49:49,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-12-22 08:49:49,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:49,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:49,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:49:49,549 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:49,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:49,550 INFO L82 PathProgramCache]: Analyzing trace with hash 2075403987, now seen corresponding path program 1 times [2020-12-22 08:49:49,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:49,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842980290] [2020-12-22 08:49:49,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:49,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:49:49,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842980290] [2020-12-22 08:49:49,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:49,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:49:49,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280633167] [2020-12-22 08:49:49,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:49:49,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:49,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:49:49,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:49:49,726 INFO L87 Difference]: Start difference. First operand 38262 states and 58047 transitions. Second operand 5 states. [2020-12-22 08:49:51,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:51,239 INFO L93 Difference]: Finished difference Result 53544 states and 81232 transitions. [2020-12-22 08:49:51,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:49:51,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-12-22 08:49:51,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:51,282 INFO L225 Difference]: With dead ends: 53544 [2020-12-22 08:49:51,282 INFO L226 Difference]: Without dead ends: 19302 [2020-12-22 08:49:51,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:49:51,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19302 states. [2020-12-22 08:49:52,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19302 to 19302. [2020-12-22 08:49:52,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19302 states. [2020-12-22 08:49:52,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19302 states to 19302 states and 29199 transitions. [2020-12-22 08:49:52,399 INFO L78 Accepts]: Start accepts. Automaton has 19302 states and 29199 transitions. Word has length 204 [2020-12-22 08:49:52,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:52,399 INFO L481 AbstractCegarLoop]: Abstraction has 19302 states and 29199 transitions. [2020-12-22 08:49:52,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:49:52,399 INFO L276 IsEmpty]: Start isEmpty. Operand 19302 states and 29199 transitions. [2020-12-22 08:49:52,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-12-22 08:49:52,419 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:52,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:52,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:49:52,420 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:52,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:52,420 INFO L82 PathProgramCache]: Analyzing trace with hash 865998510, now seen corresponding path program 1 times [2020-12-22 08:49:52,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:52,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952151984] [2020-12-22 08:49:52,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:49:52,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952151984] [2020-12-22 08:49:52,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:52,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:49:52,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787715495] [2020-12-22 08:49:52,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:49:52,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:52,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:49:52,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:49:52,585 INFO L87 Difference]: Start difference. First operand 19302 states and 29199 transitions. Second operand 6 states. [2020-12-22 08:49:54,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:54,729 INFO L93 Difference]: Finished difference Result 56100 states and 84663 transitions. [2020-12-22 08:49:54,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:49:54,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2020-12-22 08:49:54,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:54,805 INFO L225 Difference]: With dead ends: 56100 [2020-12-22 08:49:54,806 INFO L226 Difference]: Without dead ends: 36846 [2020-12-22 08:49:54,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:49:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36846 states. [2020-12-22 08:49:56,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36846 to 36844. [2020-12-22 08:49:56,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36844 states. [2020-12-22 08:49:56,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36844 states to 36844 states and 55318 transitions. [2020-12-22 08:49:56,720 INFO L78 Accepts]: Start accepts. Automaton has 36844 states and 55318 transitions. Word has length 204 [2020-12-22 08:49:56,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:56,720 INFO L481 AbstractCegarLoop]: Abstraction has 36844 states and 55318 transitions. [2020-12-22 08:49:56,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:49:56,720 INFO L276 IsEmpty]: Start isEmpty. Operand 36844 states and 55318 transitions. [2020-12-22 08:49:56,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-12-22 08:49:56,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:56,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:56,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:49:56,771 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:56,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:56,771 INFO L82 PathProgramCache]: Analyzing trace with hash 16955465, now seen corresponding path program 1 times [2020-12-22 08:49:56,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:56,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586111208] [2020-12-22 08:49:56,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:56,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:49:56,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586111208] [2020-12-22 08:49:56,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:56,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:49:56,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924736337] [2020-12-22 08:49:56,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:49:56,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:56,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:49:56,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:49:56,932 INFO L87 Difference]: Start difference. First operand 36844 states and 55318 transitions. Second operand 6 states. [2020-12-22 08:50:00,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:00,278 INFO L93 Difference]: Finished difference Result 105332 states and 157768 transitions. [2020-12-22 08:50:00,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:50:00,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2020-12-22 08:50:00,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:00,368 INFO L225 Difference]: With dead ends: 105332 [2020-12-22 08:50:00,368 INFO L226 Difference]: Without dead ends: 68554 [2020-12-22 08:50:00,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:50:00,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68554 states. [2020-12-22 08:50:03,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68554 to 68552. [2020-12-22 08:50:03,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68552 states. [2020-12-22 08:50:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68552 states to 68552 states and 102113 transitions. [2020-12-22 08:50:03,790 INFO L78 Accepts]: Start accepts. Automaton has 68552 states and 102113 transitions. Word has length 204 [2020-12-22 08:50:03,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:03,791 INFO L481 AbstractCegarLoop]: Abstraction has 68552 states and 102113 transitions. [2020-12-22 08:50:03,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:50:03,791 INFO L276 IsEmpty]: Start isEmpty. Operand 68552 states and 102113 transitions. [2020-12-22 08:50:04,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-12-22 08:50:04,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:04,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:50:04,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:50:04,065 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:04,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:04,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1942826396, now seen corresponding path program 1 times [2020-12-22 08:50:04,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:04,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877346283] [2020-12-22 08:50:04,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:50:04,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877346283] [2020-12-22 08:50:04,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:04,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:50:04,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099448496] [2020-12-22 08:50:04,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:50:04,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:04,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:50:04,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:50:04,259 INFO L87 Difference]: Start difference. First operand 68552 states and 102113 transitions. Second operand 5 states. [2020-12-22 08:50:07,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:07,866 INFO L93 Difference]: Finished difference Result 137044 states and 204161 transitions. [2020-12-22 08:50:07,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:50:07,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-12-22 08:50:07,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:07,982 INFO L225 Difference]: With dead ends: 137044 [2020-12-22 08:50:07,983 INFO L226 Difference]: Without dead ends: 68552 [2020-12-22 08:50:08,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:50:08,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68552 states. [2020-12-22 08:50:11,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68552 to 68552. [2020-12-22 08:50:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68552 states. [2020-12-22 08:50:11,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68552 states to 68552 states and 101396 transitions. [2020-12-22 08:50:11,952 INFO L78 Accepts]: Start accepts. Automaton has 68552 states and 101396 transitions. Word has length 204 [2020-12-22 08:50:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:11,952 INFO L481 AbstractCegarLoop]: Abstraction has 68552 states and 101396 transitions. [2020-12-22 08:50:11,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:50:11,953 INFO L276 IsEmpty]: Start isEmpty. Operand 68552 states and 101396 transitions. [2020-12-22 08:50:12,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-12-22 08:50:12,020 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:12,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:50:12,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:50:12,020 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:12,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:12,021 INFO L82 PathProgramCache]: Analyzing trace with hash 2033690921, now seen corresponding path program 1 times [2020-12-22 08:50:12,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:12,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551368575] [2020-12-22 08:50:12,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:50:12,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551368575] [2020-12-22 08:50:12,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:12,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:50:12,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300310071] [2020-12-22 08:50:12,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:50:12,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:12,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:50:12,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:50:12,151 INFO L87 Difference]: Start difference. First operand 68552 states and 101396 transitions. Second operand 5 states. [2020-12-22 08:50:16,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:16,104 INFO L93 Difference]: Finished difference Result 137050 states and 202735 transitions. [2020-12-22 08:50:16,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:50:16,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-12-22 08:50:16,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:16,196 INFO L225 Difference]: With dead ends: 137050 [2020-12-22 08:50:16,196 INFO L226 Difference]: Without dead ends: 68552 [2020-12-22 08:50:16,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:50:16,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68552 states. [2020-12-22 08:50:19,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68552 to 68552. [2020-12-22 08:50:19,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68552 states. [2020-12-22 08:50:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68552 states to 68552 states and 100685 transitions. [2020-12-22 08:50:20,050 INFO L78 Accepts]: Start accepts. Automaton has 68552 states and 100685 transitions. Word has length 204 [2020-12-22 08:50:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:20,051 INFO L481 AbstractCegarLoop]: Abstraction has 68552 states and 100685 transitions. [2020-12-22 08:50:20,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:50:20,051 INFO L276 IsEmpty]: Start isEmpty. Operand 68552 states and 100685 transitions. [2020-12-22 08:50:20,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-12-22 08:50:20,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:20,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:50:20,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:50:20,121 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:20,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:20,122 INFO L82 PathProgramCache]: Analyzing trace with hash 845658478, now seen corresponding path program 1 times [2020-12-22 08:50:20,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:20,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512016438] [2020-12-22 08:50:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:20,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:50:20,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512016438] [2020-12-22 08:50:20,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:20,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:50:20,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730378671] [2020-12-22 08:50:20,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:50:20,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:20,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:50:20,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:50:20,561 INFO L87 Difference]: Start difference. First operand 68552 states and 100685 transitions. Second operand 8 states. [2020-12-22 08:50:55,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:55,155 INFO L93 Difference]: Finished difference Result 676064 states and 990106 transitions. [2020-12-22 08:50:55,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 08:50:55,155 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 204 [2020-12-22 08:50:55,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:56,330 INFO L225 Difference]: With dead ends: 676064 [2020-12-22 08:50:56,330 INFO L226 Difference]: Without dead ends: 607612 [2020-12-22 08:50:56,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:50:56,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607612 states. [2020-12-22 08:51:16,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607612 to 136578. [2020-12-22 08:51:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136578 states. [2020-12-22 08:51:17,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136578 states to 136578 states and 196933 transitions. [2020-12-22 08:51:17,507 INFO L78 Accepts]: Start accepts. Automaton has 136578 states and 196933 transitions. Word has length 204 [2020-12-22 08:51:17,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:51:17,508 INFO L481 AbstractCegarLoop]: Abstraction has 136578 states and 196933 transitions. [2020-12-22 08:51:17,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:51:17,508 INFO L276 IsEmpty]: Start isEmpty. Operand 136578 states and 196933 transitions. [2020-12-22 08:51:17,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-12-22 08:51:17,677 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:51:17,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:51:17,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:51:17,678 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:51:17,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:51:17,679 INFO L82 PathProgramCache]: Analyzing trace with hash 754794422, now seen corresponding path program 1 times [2020-12-22 08:51:17,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:51:17,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610305178] [2020-12-22 08:51:17,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:51:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:51:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:51:17,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610305178] [2020-12-22 08:51:17,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:51:17,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:51:17,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218542305] [2020-12-22 08:51:17,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:51:17,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:51:17,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:51:17,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:51:17,787 INFO L87 Difference]: Start difference. First operand 136578 states and 196933 transitions. Second operand 3 states. [2020-12-22 08:51:31,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:51:31,601 INFO L93 Difference]: Finished difference Result 303400 states and 436693 transitions. [2020-12-22 08:51:31,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:51:31,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2020-12-22 08:51:31,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:51:31,827 INFO L225 Difference]: With dead ends: 303400 [2020-12-22 08:51:31,827 INFO L226 Difference]: Without dead ends: 166918 [2020-12-22 08:51:31,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:51:32,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166918 states. [2020-12-22 08:51:46,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166918 to 166916. [2020-12-22 08:51:46,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166916 states. [2020-12-22 08:51:46,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166916 states to 166916 states and 238427 transitions. [2020-12-22 08:51:46,681 INFO L78 Accepts]: Start accepts. Automaton has 166916 states and 238427 transitions. Word has length 208 [2020-12-22 08:51:46,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:51:46,681 INFO L481 AbstractCegarLoop]: Abstraction has 166916 states and 238427 transitions. [2020-12-22 08:51:46,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:51:46,682 INFO L276 IsEmpty]: Start isEmpty. Operand 166916 states and 238427 transitions. [2020-12-22 08:51:46,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-12-22 08:51:46,855 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:51:46,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:51:46,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:51:46,855 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:51:46,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:51:46,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1371620489, now seen corresponding path program 1 times [2020-12-22 08:51:46,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:51:46,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670611361] [2020-12-22 08:51:46,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:51:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:51:47,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:51:47,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670611361] [2020-12-22 08:51:47,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:51:47,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:51:47,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725552882] [2020-12-22 08:51:47,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:51:47,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:51:47,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:51:47,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:51:47,105 INFO L87 Difference]: Start difference. First operand 166916 states and 238427 transitions. Second operand 8 states.