/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/pals_lcr.5.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:33:54,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:33:54,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:33:54,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:33:54,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:33:54,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:33:54,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:33:54,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:33:54,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:33:54,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:33:54,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:33:54,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:33:54,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:33:54,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:33:54,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:33:54,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:33:54,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:33:54,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:33:54,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:33:54,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:33:54,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:33:54,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:33:54,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:33:54,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:33:54,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 07:33:54,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 07:33:54,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 07:33:54,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 07:33:54,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 07:33:54,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 07:33:54,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 07:33:54,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 07:33:54,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 07:33:54,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 07:33:54,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 07:33:54,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 07:33:54,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 07:33:54,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 07:33:54,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:33:54,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:33:54,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:33:54,207 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:33:54,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:33:54,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:33:54,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:33:54,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:33:54,238 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:33:54,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:33:54,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:33:54,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:33:54,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:33:54,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:33:54,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:33:54,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:33:54,240 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:33:54,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:33:54,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:33:54,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:33:54,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:33:54,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:33:54,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:33:54,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:33:54,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:33:54,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:33:54,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:33:54,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:33:54,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:33:54,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:33:54,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:33:54,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:33:54,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:33:54,661 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:33:54,662 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:33:54,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.UNBOUNDED.pals.c [2020-12-22 07:33:54,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37606dd57/8ac8f7a1b139454a8675f30d55eb46d4/FLAG00ed593d2 [2020-12-22 07:33:55,589 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:33:55,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.UNBOUNDED.pals.c [2020-12-22 07:33:55,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37606dd57/8ac8f7a1b139454a8675f30d55eb46d4/FLAG00ed593d2 [2020-12-22 07:33:55,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37606dd57/8ac8f7a1b139454a8675f30d55eb46d4 [2020-12-22 07:33:55,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:33:55,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:33:55,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:33:55,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:33:55,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:33:55,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:33:55" (1/1) ... [2020-12-22 07:33:55,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2336b797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:55, skipping insertion in model container [2020-12-22 07:33:55,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:33:55" (1/1) ... [2020-12-22 07:33:55,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:33:55,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:33:56,162 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/pals_lcr.5.1.ufo.UNBOUNDED.pals.c[11298,11311] [2020-12-22 07:33:56,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:33:56,186 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:33:56,243 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/pals_lcr.5.1.ufo.UNBOUNDED.pals.c[11298,11311] [2020-12-22 07:33:56,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:33:56,282 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:33:56,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:56 WrapperNode [2020-12-22 07:33:56,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:33:56,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:33:56,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:33:56,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:33:56,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:56" (1/1) ... [2020-12-22 07:33:56,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:56" (1/1) ... [2020-12-22 07:33:56,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:33:56,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:33:56,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:33:56,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:33:56,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:56" (1/1) ... [2020-12-22 07:33:56,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:56" (1/1) ... [2020-12-22 07:33:56,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:56" (1/1) ... [2020-12-22 07:33:56,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:56" (1/1) ... [2020-12-22 07:33:56,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:56" (1/1) ... [2020-12-22 07:33:56,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:56" (1/1) ... [2020-12-22 07:33:56,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:56" (1/1) ... [2020-12-22 07:33:56,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:33:56,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:33:56,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:33:56,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:33:56,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:33:56,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:33:56,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:33:56,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:33:56,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:33:57,454 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:33:57,454 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-22 07:33:57,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:33:57 BoogieIcfgContainer [2020-12-22 07:33:57,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:33:57,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:33:57,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:33:57,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:33:57,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:33:55" (1/3) ... [2020-12-22 07:33:57,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503f2479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:33:57, skipping insertion in model container [2020-12-22 07:33:57,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:56" (2/3) ... [2020-12-22 07:33:57,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503f2479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:33:57, skipping insertion in model container [2020-12-22 07:33:57,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:33:57" (3/3) ... [2020-12-22 07:33:57,466 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c [2020-12-22 07:33:57,472 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:33:57,477 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:33:57,496 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:33:57,524 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:33:57,525 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:33:57,525 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:33:57,525 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:33:57,525 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:33:57,525 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:33:57,525 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:33:57,526 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:33:57,542 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-12-22 07:33:57,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 07:33:57,551 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:57,552 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] [2020-12-22 07:33:57,552 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:57,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:57,560 INFO L82 PathProgramCache]: Analyzing trace with hash -176333024, now seen corresponding path program 1 times [2020-12-22 07:33:57,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:57,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066062329] [2020-12-22 07:33:57,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:57,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:57,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066062329] [2020-12-22 07:33:57,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:57,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:33:57,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497094722] [2020-12-22 07:33:57,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:33:57,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:57,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:33:57,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:33:57,890 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 2 states. [2020-12-22 07:33:57,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:57,923 INFO L93 Difference]: Finished difference Result 148 states and 247 transitions. [2020-12-22 07:33:57,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:33:57,925 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2020-12-22 07:33:57,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:57,938 INFO L225 Difference]: With dead ends: 148 [2020-12-22 07:33:57,939 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 07:33:57,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:33:57,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 07:33:57,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-12-22 07:33:57,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-22 07:33:57,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 152 transitions. [2020-12-22 07:33:57,997 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 152 transitions. Word has length 33 [2020-12-22 07:33:57,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:57,997 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 152 transitions. [2020-12-22 07:33:57,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:33:57,998 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 152 transitions. [2020-12-22 07:33:58,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 07:33:58,000 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:58,000 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] [2020-12-22 07:33:58,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:33:58,001 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:58,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:58,002 INFO L82 PathProgramCache]: Analyzing trace with hash -685806114, now seen corresponding path program 1 times [2020-12-22 07:33:58,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:58,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529047777] [2020-12-22 07:33:58,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:58,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529047777] [2020-12-22 07:33:58,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:58,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:33:58,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362191463] [2020-12-22 07:33:58,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:33:58,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:58,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:33:58,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:33:58,127 INFO L87 Difference]: Start difference. First operand 90 states and 152 transitions. Second operand 5 states. [2020-12-22 07:33:58,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:58,275 INFO L93 Difference]: Finished difference Result 147 states and 240 transitions. [2020-12-22 07:33:58,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:33:58,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-12-22 07:33:58,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:58,281 INFO L225 Difference]: With dead ends: 147 [2020-12-22 07:33:58,281 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 07:33:58,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:33:58,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 07:33:58,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-12-22 07:33:58,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-22 07:33:58,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 121 transitions. [2020-12-22 07:33:58,293 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 121 transitions. Word has length 33 [2020-12-22 07:33:58,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:58,293 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 121 transitions. [2020-12-22 07:33:58,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:33:58,294 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 121 transitions. [2020-12-22 07:33:58,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 07:33:58,296 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:58,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:58,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:33:58,297 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:58,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:58,298 INFO L82 PathProgramCache]: Analyzing trace with hash 803903125, now seen corresponding path program 1 times [2020-12-22 07:33:58,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:58,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438221255] [2020-12-22 07:33:58,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:58,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:58,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438221255] [2020-12-22 07:33:58,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:58,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:33:58,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490236379] [2020-12-22 07:33:58,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:33:58,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:58,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:33:58,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:58,511 INFO L87 Difference]: Start difference. First operand 90 states and 121 transitions. Second operand 3 states. [2020-12-22 07:33:58,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:58,541 INFO L93 Difference]: Finished difference Result 190 states and 279 transitions. [2020-12-22 07:33:58,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:33:58,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 07:33:58,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:58,544 INFO L225 Difference]: With dead ends: 190 [2020-12-22 07:33:58,545 INFO L226 Difference]: Without dead ends: 137 [2020-12-22 07:33:58,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:58,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-12-22 07:33:58,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2020-12-22 07:33:58,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-12-22 07:33:58,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 193 transitions. [2020-12-22 07:33:58,564 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 193 transitions. Word has length 63 [2020-12-22 07:33:58,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:58,565 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 193 transitions. [2020-12-22 07:33:58,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:33:58,565 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 193 transitions. [2020-12-22 07:33:58,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 07:33:58,567 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:58,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:58,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:33:58,568 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:58,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:58,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1136127733, now seen corresponding path program 1 times [2020-12-22 07:33:58,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:58,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273969496] [2020-12-22 07:33:58,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:58,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:58,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273969496] [2020-12-22 07:33:58,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:58,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:33:58,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636474292] [2020-12-22 07:33:58,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:33:58,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:58,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:33:58,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:58,735 INFO L87 Difference]: Start difference. First operand 135 states and 193 transitions. Second operand 3 states. [2020-12-22 07:33:58,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:58,767 INFO L93 Difference]: Finished difference Result 319 states and 485 transitions. [2020-12-22 07:33:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:33:58,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 07:33:58,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:58,771 INFO L225 Difference]: With dead ends: 319 [2020-12-22 07:33:58,772 INFO L226 Difference]: Without dead ends: 221 [2020-12-22 07:33:58,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:58,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-12-22 07:33:58,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2020-12-22 07:33:58,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-12-22 07:33:58,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 326 transitions. [2020-12-22 07:33:58,819 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 326 transitions. Word has length 63 [2020-12-22 07:33:58,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:58,824 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 326 transitions. [2020-12-22 07:33:58,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:33:58,824 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 326 transitions. [2020-12-22 07:33:58,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 07:33:58,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:58,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:58,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:33:58,830 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:58,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:58,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1564554881, now seen corresponding path program 1 times [2020-12-22 07:33:58,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:58,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14053846] [2020-12-22 07:33:58,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:59,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14053846] [2020-12-22 07:33:59,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:59,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:33:59,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390441025] [2020-12-22 07:33:59,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:33:59,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:59,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:33:59,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:33:59,135 INFO L87 Difference]: Start difference. First operand 219 states and 326 transitions. Second operand 7 states. [2020-12-22 07:33:59,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:59,419 INFO L93 Difference]: Finished difference Result 2039 states and 3216 transitions. [2020-12-22 07:33:59,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:33:59,420 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-12-22 07:33:59,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:59,432 INFO L225 Difference]: With dead ends: 2039 [2020-12-22 07:33:59,433 INFO L226 Difference]: Without dead ends: 1857 [2020-12-22 07:33:59,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:33:59,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-12-22 07:33:59,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 399. [2020-12-22 07:33:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-12-22 07:33:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 606 transitions. [2020-12-22 07:33:59,488 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 606 transitions. Word has length 63 [2020-12-22 07:33:59,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:59,488 INFO L481 AbstractCegarLoop]: Abstraction has 399 states and 606 transitions. [2020-12-22 07:33:59,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:33:59,488 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 606 transitions. [2020-12-22 07:33:59,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 07:33:59,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:59,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:59,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:33:59,490 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:59,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:59,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1117008495, now seen corresponding path program 1 times [2020-12-22 07:33:59,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:59,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45827577] [2020-12-22 07:33:59,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:59,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45827577] [2020-12-22 07:33:59,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:59,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:33:59,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965605818] [2020-12-22 07:33:59,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:33:59,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:59,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:33:59,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:59,675 INFO L87 Difference]: Start difference. First operand 399 states and 606 transitions. Second operand 3 states. [2020-12-22 07:33:59,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:59,738 INFO L93 Difference]: Finished difference Result 1079 states and 1668 transitions. [2020-12-22 07:33:59,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:33:59,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 07:33:59,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:59,745 INFO L225 Difference]: With dead ends: 1079 [2020-12-22 07:33:59,745 INFO L226 Difference]: Without dead ends: 717 [2020-12-22 07:33:59,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:59,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2020-12-22 07:33:59,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 707. [2020-12-22 07:33:59,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2020-12-22 07:33:59,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1070 transitions. [2020-12-22 07:33:59,789 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1070 transitions. Word has length 65 [2020-12-22 07:33:59,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:59,789 INFO L481 AbstractCegarLoop]: Abstraction has 707 states and 1070 transitions. [2020-12-22 07:33:59,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:33:59,789 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1070 transitions. [2020-12-22 07:33:59,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 07:33:59,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:59,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:59,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:33:59,792 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:59,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:59,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1050514983, now seen corresponding path program 1 times [2020-12-22 07:33:59,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:59,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794865184] [2020-12-22 07:33:59,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:00,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:00,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794865184] [2020-12-22 07:34:00,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:00,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:34:00,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864033754] [2020-12-22 07:34:00,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:34:00,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:00,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:34:00,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:34:00,072 INFO L87 Difference]: Start difference. First operand 707 states and 1070 transitions. Second operand 7 states. [2020-12-22 07:34:00,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:00,308 INFO L93 Difference]: Finished difference Result 1379 states and 2104 transitions. [2020-12-22 07:34:00,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:34:00,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-12-22 07:34:00,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:00,313 INFO L225 Difference]: With dead ends: 1379 [2020-12-22 07:34:00,313 INFO L226 Difference]: Without dead ends: 709 [2020-12-22 07:34:00,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:34:00,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-12-22 07:34:00,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 707. [2020-12-22 07:34:00,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2020-12-22 07:34:00,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1062 transitions. [2020-12-22 07:34:00,353 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1062 transitions. Word has length 65 [2020-12-22 07:34:00,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:00,353 INFO L481 AbstractCegarLoop]: Abstraction has 707 states and 1062 transitions. [2020-12-22 07:34:00,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:34:00,354 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1062 transitions. [2020-12-22 07:34:00,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 07:34:00,354 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:00,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:00,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:34:00,355 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:00,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:00,356 INFO L82 PathProgramCache]: Analyzing trace with hash 738399093, now seen corresponding path program 1 times [2020-12-22 07:34:00,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:00,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927916027] [2020-12-22 07:34:00,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:00,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:00,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927916027] [2020-12-22 07:34:00,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:00,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:34:00,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787042209] [2020-12-22 07:34:00,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:34:00,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:00,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:34:00,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:00,411 INFO L87 Difference]: Start difference. First operand 707 states and 1062 transitions. Second operand 3 states. [2020-12-22 07:34:00,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:00,484 INFO L93 Difference]: Finished difference Result 1951 states and 2952 transitions. [2020-12-22 07:34:00,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:34:00,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 07:34:00,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:00,492 INFO L225 Difference]: With dead ends: 1951 [2020-12-22 07:34:00,492 INFO L226 Difference]: Without dead ends: 1281 [2020-12-22 07:34:00,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:00,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-12-22 07:34:00,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1279. [2020-12-22 07:34:00,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-12-22 07:34:00,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1910 transitions. [2020-12-22 07:34:00,565 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1910 transitions. Word has length 65 [2020-12-22 07:34:00,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:00,565 INFO L481 AbstractCegarLoop]: Abstraction has 1279 states and 1910 transitions. [2020-12-22 07:34:00,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:34:00,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1910 transitions. [2020-12-22 07:34:00,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 07:34:00,566 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:00,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:00,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:34:00,567 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:00,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:00,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1985906709, now seen corresponding path program 1 times [2020-12-22 07:34:00,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:00,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418464944] [2020-12-22 07:34:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:00,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:00,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418464944] [2020-12-22 07:34:00,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:00,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:34:00,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389502318] [2020-12-22 07:34:00,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:34:00,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:00,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:34:00,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:00,627 INFO L87 Difference]: Start difference. First operand 1279 states and 1910 transitions. Second operand 3 states. [2020-12-22 07:34:00,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:00,772 INFO L93 Difference]: Finished difference Result 3571 states and 5336 transitions. [2020-12-22 07:34:00,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:34:00,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 07:34:00,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:00,785 INFO L225 Difference]: With dead ends: 3571 [2020-12-22 07:34:00,785 INFO L226 Difference]: Without dead ends: 2329 [2020-12-22 07:34:00,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:00,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2020-12-22 07:34:00,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2327. [2020-12-22 07:34:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2327 states. [2020-12-22 07:34:00,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2327 states to 2327 states and 3430 transitions. [2020-12-22 07:34:00,939 INFO L78 Accepts]: Start accepts. Automaton has 2327 states and 3430 transitions. Word has length 65 [2020-12-22 07:34:00,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:00,939 INFO L481 AbstractCegarLoop]: Abstraction has 2327 states and 3430 transitions. [2020-12-22 07:34:00,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:34:00,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 3430 transitions. [2020-12-22 07:34:00,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 07:34:00,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:00,943 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] [2020-12-22 07:34:00,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:34:00,943 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:00,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:00,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1379050855, now seen corresponding path program 1 times [2020-12-22 07:34:00,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:00,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106003129] [2020-12-22 07:34:00,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:01,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106003129] [2020-12-22 07:34:01,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:01,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 07:34:01,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4035457] [2020-12-22 07:34:01,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:34:01,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:01,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:34:01,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:34:01,061 INFO L87 Difference]: Start difference. First operand 2327 states and 3430 transitions. Second operand 8 states. [2020-12-22 07:34:01,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:01,508 INFO L93 Difference]: Finished difference Result 4053 states and 5932 transitions. [2020-12-22 07:34:01,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:34:01,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-12-22 07:34:01,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:01,534 INFO L225 Difference]: With dead ends: 4053 [2020-12-22 07:34:01,535 INFO L226 Difference]: Without dead ends: 4051 [2020-12-22 07:34:01,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:34:01,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2020-12-22 07:34:01,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 2423. [2020-12-22 07:34:01,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2423 states. [2020-12-22 07:34:01,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3510 transitions. [2020-12-22 07:34:01,775 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3510 transitions. Word has length 66 [2020-12-22 07:34:01,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:01,775 INFO L481 AbstractCegarLoop]: Abstraction has 2423 states and 3510 transitions. [2020-12-22 07:34:01,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:34:01,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3510 transitions. [2020-12-22 07:34:01,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 07:34:01,780 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:01,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:01,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:34:01,780 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:01,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:01,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1091422096, now seen corresponding path program 1 times [2020-12-22 07:34:01,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:01,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863410952] [2020-12-22 07:34:01,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:01,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863410952] [2020-12-22 07:34:01,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:01,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:34:01,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356649866] [2020-12-22 07:34:01,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:34:01,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:01,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:34:01,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:01,841 INFO L87 Difference]: Start difference. First operand 2423 states and 3510 transitions. Second operand 3 states. [2020-12-22 07:34:02,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:02,094 INFO L93 Difference]: Finished difference Result 4862 states and 7100 transitions. [2020-12-22 07:34:02,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:34:02,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 07:34:02,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:02,112 INFO L225 Difference]: With dead ends: 4862 [2020-12-22 07:34:02,113 INFO L226 Difference]: Without dead ends: 3515 [2020-12-22 07:34:02,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:02,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2020-12-22 07:34:02,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3513. [2020-12-22 07:34:02,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3513 states. [2020-12-22 07:34:02,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 5064 transitions. [2020-12-22 07:34:02,424 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 5064 transitions. Word has length 67 [2020-12-22 07:34:02,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:02,425 INFO L481 AbstractCegarLoop]: Abstraction has 3513 states and 5064 transitions. [2020-12-22 07:34:02,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:34:02,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 5064 transitions. [2020-12-22 07:34:02,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 07:34:02,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:02,428 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:02,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:34:02,429 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:02,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:02,430 INFO L82 PathProgramCache]: Analyzing trace with hash 639422196, now seen corresponding path program 1 times [2020-12-22 07:34:02,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:02,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973261233] [2020-12-22 07:34:02,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:02,571 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 07:34:02,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973261233] [2020-12-22 07:34:02,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:02,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:34:02,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354422614] [2020-12-22 07:34:02,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:34:02,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:02,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:34:02,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:34:02,574 INFO L87 Difference]: Start difference. First operand 3513 states and 5064 transitions. Second operand 7 states. [2020-12-22 07:34:03,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:03,923 INFO L93 Difference]: Finished difference Result 21589 states and 31166 transitions. [2020-12-22 07:34:03,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:34:03,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-12-22 07:34:03,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:04,010 INFO L225 Difference]: With dead ends: 21589 [2020-12-22 07:34:04,011 INFO L226 Difference]: Without dead ends: 18115 [2020-12-22 07:34:04,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:34:04,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18115 states. [2020-12-22 07:34:04,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18115 to 6985. [2020-12-22 07:34:04,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6985 states. [2020-12-22 07:34:04,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6985 states to 6985 states and 10040 transitions. [2020-12-22 07:34:04,758 INFO L78 Accepts]: Start accepts. Automaton has 6985 states and 10040 transitions. Word has length 93 [2020-12-22 07:34:04,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:04,759 INFO L481 AbstractCegarLoop]: Abstraction has 6985 states and 10040 transitions. [2020-12-22 07:34:04,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:34:04,759 INFO L276 IsEmpty]: Start isEmpty. Operand 6985 states and 10040 transitions. [2020-12-22 07:34:04,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 07:34:04,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:04,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:04,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:34:04,765 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:04,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:04,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1886929812, now seen corresponding path program 1 times [2020-12-22 07:34:04,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:04,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400015203] [2020-12-22 07:34:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 07:34:04,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400015203] [2020-12-22 07:34:04,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:04,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:34:04,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266220139] [2020-12-22 07:34:04,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:34:04,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:04,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:34:04,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:34:04,904 INFO L87 Difference]: Start difference. First operand 6985 states and 10040 transitions. Second operand 7 states. [2020-12-22 07:34:06,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:06,478 INFO L93 Difference]: Finished difference Result 25061 states and 36142 transitions. [2020-12-22 07:34:06,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:34:06,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-12-22 07:34:06,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:06,528 INFO L225 Difference]: With dead ends: 25061 [2020-12-22 07:34:06,528 INFO L226 Difference]: Without dead ends: 21587 [2020-12-22 07:34:06,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:34:06,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21587 states. [2020-12-22 07:34:07,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21587 to 12201. [2020-12-22 07:34:07,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12201 states. [2020-12-22 07:34:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12201 states to 12201 states and 17464 transitions. [2020-12-22 07:34:07,574 INFO L78 Accepts]: Start accepts. Automaton has 12201 states and 17464 transitions. Word has length 93 [2020-12-22 07:34:07,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:07,577 INFO L481 AbstractCegarLoop]: Abstraction has 12201 states and 17464 transitions. [2020-12-22 07:34:07,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:34:07,577 INFO L276 IsEmpty]: Start isEmpty. Operand 12201 states and 17464 transitions. [2020-12-22 07:34:07,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 07:34:07,583 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:07,583 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:07,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:34:07,584 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:07,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:07,585 INFO L82 PathProgramCache]: Analyzing trace with hash -938604502, now seen corresponding path program 1 times [2020-12-22 07:34:07,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:07,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472982165] [2020-12-22 07:34:07,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 07:34:07,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472982165] [2020-12-22 07:34:07,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:07,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:34:07,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648039944] [2020-12-22 07:34:07,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:34:07,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:07,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:34:07,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:34:07,733 INFO L87 Difference]: Start difference. First operand 12201 states and 17464 transitions. Second operand 7 states. [2020-12-22 07:34:09,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:09,359 INFO L93 Difference]: Finished difference Result 28533 states and 41118 transitions. [2020-12-22 07:34:09,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:34:09,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-12-22 07:34:09,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:09,422 INFO L225 Difference]: With dead ends: 28533 [2020-12-22 07:34:09,422 INFO L226 Difference]: Without dead ends: 25059 [2020-12-22 07:34:09,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:34:09,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25059 states. [2020-12-22 07:34:10,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25059 to 15673. [2020-12-22 07:34:10,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15673 states. [2020-12-22 07:34:10,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15673 states to 15673 states and 22440 transitions. [2020-12-22 07:34:10,639 INFO L78 Accepts]: Start accepts. Automaton has 15673 states and 22440 transitions. Word has length 93 [2020-12-22 07:34:10,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:10,640 INFO L481 AbstractCegarLoop]: Abstraction has 15673 states and 22440 transitions. [2020-12-22 07:34:10,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:34:10,640 INFO L276 IsEmpty]: Start isEmpty. Operand 15673 states and 22440 transitions. [2020-12-22 07:34:10,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 07:34:10,645 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:10,645 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:10,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:34:10,646 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:10,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:10,647 INFO L82 PathProgramCache]: Analyzing trace with hash 2120903754, now seen corresponding path program 1 times [2020-12-22 07:34:10,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:10,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427443786] [2020-12-22 07:34:10,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 07:34:10,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427443786] [2020-12-22 07:34:10,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:10,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:34:10,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751934182] [2020-12-22 07:34:10,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:34:10,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:10,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:34:10,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:34:10,776 INFO L87 Difference]: Start difference. First operand 15673 states and 22440 transitions. Second operand 7 states. [2020-12-22 07:34:12,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:12,388 INFO L93 Difference]: Finished difference Result 32005 states and 46094 transitions. [2020-12-22 07:34:12,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:34:12,389 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-12-22 07:34:12,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:12,447 INFO L225 Difference]: With dead ends: 32005 [2020-12-22 07:34:12,447 INFO L226 Difference]: Without dead ends: 28531 [2020-12-22 07:34:12,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:34:12,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28531 states. [2020-12-22 07:34:13,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28531 to 19145. [2020-12-22 07:34:13,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19145 states. [2020-12-22 07:34:13,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19145 states to 19145 states and 27416 transitions. [2020-12-22 07:34:13,755 INFO L78 Accepts]: Start accepts. Automaton has 19145 states and 27416 transitions. Word has length 93 [2020-12-22 07:34:13,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:13,756 INFO L481 AbstractCegarLoop]: Abstraction has 19145 states and 27416 transitions. [2020-12-22 07:34:13,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:34:13,756 INFO L276 IsEmpty]: Start isEmpty. Operand 19145 states and 27416 transitions. [2020-12-22 07:34:13,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 07:34:13,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:13,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:13,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:34:13,764 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:13,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:13,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1312606543, now seen corresponding path program 1 times [2020-12-22 07:34:13,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:13,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981984545] [2020-12-22 07:34:13,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:34:13,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981984545] [2020-12-22 07:34:13,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:13,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:34:13,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195636633] [2020-12-22 07:34:13,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:34:13,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:13,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:34:13,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:34:13,888 INFO L87 Difference]: Start difference. First operand 19145 states and 27416 transitions. Second operand 7 states. [2020-12-22 07:34:15,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:15,844 INFO L93 Difference]: Finished difference Result 33397 states and 48126 transitions. [2020-12-22 07:34:15,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:34:15,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-12-22 07:34:15,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:15,907 INFO L225 Difference]: With dead ends: 33397 [2020-12-22 07:34:15,907 INFO L226 Difference]: Without dead ends: 30963 [2020-12-22 07:34:15,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:34:15,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30963 states. [2020-12-22 07:34:17,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30963 to 21577. [2020-12-22 07:34:17,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21577 states. [2020-12-22 07:34:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21577 states to 21577 states and 30936 transitions. [2020-12-22 07:34:17,300 INFO L78 Accepts]: Start accepts. Automaton has 21577 states and 30936 transitions. Word has length 95 [2020-12-22 07:34:17,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:17,301 INFO L481 AbstractCegarLoop]: Abstraction has 21577 states and 30936 transitions. [2020-12-22 07:34:17,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:34:17,301 INFO L276 IsEmpty]: Start isEmpty. Operand 21577 states and 30936 transitions. [2020-12-22 07:34:17,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 07:34:17,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:17,309 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:17,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:34:17,309 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:17,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:17,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1044794996, now seen corresponding path program 1 times [2020-12-22 07:34:17,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:17,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564687283] [2020-12-22 07:34:17,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:17,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564687283] [2020-12-22 07:34:17,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:17,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:34:17,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086423732] [2020-12-22 07:34:17,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:34:17,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:17,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:34:17,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:17,374 INFO L87 Difference]: Start difference. First operand 21577 states and 30936 transitions. Second operand 3 states. [2020-12-22 07:34:18,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:18,832 INFO L93 Difference]: Finished difference Result 37418 states and 53853 transitions. [2020-12-22 07:34:18,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:34:18,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 07:34:18,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:18,850 INFO L225 Difference]: With dead ends: 37418 [2020-12-22 07:34:18,850 INFO L226 Difference]: Without dead ends: 15880 [2020-12-22 07:34:18,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:18,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15880 states. [2020-12-22 07:34:19,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15880 to 15878. [2020-12-22 07:34:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15878 states. [2020-12-22 07:34:19,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15878 states to 15878 states and 22746 transitions. [2020-12-22 07:34:19,970 INFO L78 Accepts]: Start accepts. Automaton has 15878 states and 22746 transitions. Word has length 95 [2020-12-22 07:34:19,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:19,970 INFO L481 AbstractCegarLoop]: Abstraction has 15878 states and 22746 transitions. [2020-12-22 07:34:19,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:34:19,970 INFO L276 IsEmpty]: Start isEmpty. Operand 15878 states and 22746 transitions. [2020-12-22 07:34:19,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 07:34:19,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:19,976 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:19,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:34:19,977 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:19,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:19,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1472221374, now seen corresponding path program 1 times [2020-12-22 07:34:19,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:19,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348543241] [2020-12-22 07:34:19,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:20,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348543241] [2020-12-22 07:34:20,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:20,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:34:20,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242120997] [2020-12-22 07:34:20,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:34:20,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:20,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:34:20,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:20,043 INFO L87 Difference]: Start difference. First operand 15878 states and 22746 transitions. Second operand 3 states. [2020-12-22 07:34:20,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:20,595 INFO L93 Difference]: Finished difference Result 23786 states and 34084 transitions. [2020-12-22 07:34:20,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:34:20,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-22 07:34:20,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:20,604 INFO L225 Difference]: With dead ends: 23786 [2020-12-22 07:34:20,604 INFO L226 Difference]: Without dead ends: 7976 [2020-12-22 07:34:20,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:20,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7976 states. [2020-12-22 07:34:21,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7976 to 7974. [2020-12-22 07:34:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7974 states. [2020-12-22 07:34:21,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7974 states to 7974 states and 11306 transitions. [2020-12-22 07:34:21,497 INFO L78 Accepts]: Start accepts. Automaton has 7974 states and 11306 transitions. Word has length 96 [2020-12-22 07:34:21,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:21,498 INFO L481 AbstractCegarLoop]: Abstraction has 7974 states and 11306 transitions. [2020-12-22 07:34:21,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:34:21,498 INFO L276 IsEmpty]: Start isEmpty. Operand 7974 states and 11306 transitions. [2020-12-22 07:34:21,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 07:34:21,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:21,501 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:21,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:34:21,501 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:21,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:21,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1559340168, now seen corresponding path program 1 times [2020-12-22 07:34:21,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:21,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527194583] [2020-12-22 07:34:21,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:21,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527194583] [2020-12-22 07:34:21,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:21,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:34:21,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054295863] [2020-12-22 07:34:21,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:34:21,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:21,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:34:21,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:21,557 INFO L87 Difference]: Start difference. First operand 7974 states and 11306 transitions. Second operand 3 states. [2020-12-22 07:34:21,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:21,846 INFO L93 Difference]: Finished difference Result 11930 states and 16924 transitions. [2020-12-22 07:34:21,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:34:21,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-22 07:34:21,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:21,852 INFO L225 Difference]: With dead ends: 11930 [2020-12-22 07:34:21,852 INFO L226 Difference]: Without dead ends: 4024 [2020-12-22 07:34:21,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:21,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2020-12-22 07:34:22,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 4022. [2020-12-22 07:34:22,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4022 states. [2020-12-22 07:34:22,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4022 states to 4022 states and 5638 transitions. [2020-12-22 07:34:22,076 INFO L78 Accepts]: Start accepts. Automaton has 4022 states and 5638 transitions. Word has length 96 [2020-12-22 07:34:22,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:22,077 INFO L481 AbstractCegarLoop]: Abstraction has 4022 states and 5638 transitions. [2020-12-22 07:34:22,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:34:22,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4022 states and 5638 transitions. [2020-12-22 07:34:22,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 07:34:22,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:22,079 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:22,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 07:34:22,079 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:22,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:22,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1616351918, now seen corresponding path program 1 times [2020-12-22 07:34:22,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:22,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293863244] [2020-12-22 07:34:22,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:22,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293863244] [2020-12-22 07:34:22,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332330971] [2020-12-22 07:34:22,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:34:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:22,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 07:34:22,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:34:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:34:22,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:34:22,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-22 07:34:22,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320687284] [2020-12-22 07:34:22,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 07:34:22,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:22,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 07:34:22,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-12-22 07:34:22,688 INFO L87 Difference]: Start difference. First operand 4022 states and 5638 transitions. Second operand 12 states. [2020-12-22 07:34:27,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:27,014 INFO L93 Difference]: Finished difference Result 28565 states and 39385 transitions. [2020-12-22 07:34:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-22 07:34:27,015 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-12-22 07:34:27,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:27,054 INFO L225 Difference]: With dead ends: 28565 [2020-12-22 07:34:27,055 INFO L226 Difference]: Without dead ends: 24611 [2020-12-22 07:34:27,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=525, Invalid=2025, Unknown=0, NotChecked=0, Total=2550 [2020-12-22 07:34:27,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24611 states. [2020-12-22 07:34:28,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24611 to 13689. [2020-12-22 07:34:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13689 states. [2020-12-22 07:34:28,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13689 states to 13689 states and 18621 transitions. [2020-12-22 07:34:28,710 INFO L78 Accepts]: Start accepts. Automaton has 13689 states and 18621 transitions. Word has length 96 [2020-12-22 07:34:28,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:28,710 INFO L481 AbstractCegarLoop]: Abstraction has 13689 states and 18621 transitions. [2020-12-22 07:34:28,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 07:34:28,711 INFO L276 IsEmpty]: Start isEmpty. Operand 13689 states and 18621 transitions. [2020-12-22 07:34:28,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 07:34:28,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:28,714 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:28,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:34:28,928 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:28,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:28,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1720158323, now seen corresponding path program 1 times [2020-12-22 07:34:28,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:28,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334967123] [2020-12-22 07:34:28,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:29,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334967123] [2020-12-22 07:34:29,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084853898] [2020-12-22 07:34:29,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:34:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:29,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 07:34:29,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:34:29,418 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:34:29,703 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:29,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:34:29,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 07:34:29,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870066156] [2020-12-22 07:34:29,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 07:34:29,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:29,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 07:34:29,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:34:29,705 INFO L87 Difference]: Start difference. First operand 13689 states and 18621 transitions. Second operand 17 states. [2020-12-22 07:34:30,394 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-22 07:34:41,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:41,410 INFO L93 Difference]: Finished difference Result 118922 states and 161591 transitions. [2020-12-22 07:34:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-12-22 07:34:41,410 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-12-22 07:34:41,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:41,733 INFO L225 Difference]: With dead ends: 118922 [2020-12-22 07:34:41,733 INFO L226 Difference]: Without dead ends: 105951 [2020-12-22 07:34:41,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=660, Invalid=3000, Unknown=0, NotChecked=0, Total=3660 [2020-12-22 07:34:41,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105951 states. [2020-12-22 07:34:48,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105951 to 68616. [2020-12-22 07:34:48,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68616 states. [2020-12-22 07:34:48,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68616 states to 68616 states and 91683 transitions. [2020-12-22 07:34:48,598 INFO L78 Accepts]: Start accepts. Automaton has 68616 states and 91683 transitions. Word has length 97 [2020-12-22 07:34:48,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:48,599 INFO L481 AbstractCegarLoop]: Abstraction has 68616 states and 91683 transitions. [2020-12-22 07:34:48,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 07:34:48,599 INFO L276 IsEmpty]: Start isEmpty. Operand 68616 states and 91683 transitions. [2020-12-22 07:34:48,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 07:34:48,604 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:48,604 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:48,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:34:48,818 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:48,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:48,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1760600483, now seen corresponding path program 1 times [2020-12-22 07:34:48,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:48,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161692781] [2020-12-22 07:34:48,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:48,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161692781] [2020-12-22 07:34:48,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:48,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:34:48,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295038022] [2020-12-22 07:34:48,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:34:48,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:48,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:34:48,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:48,915 INFO L87 Difference]: Start difference. First operand 68616 states and 91683 transitions. Second operand 3 states. [2020-12-22 07:34:52,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:52,296 INFO L93 Difference]: Finished difference Result 99700 states and 133238 transitions. [2020-12-22 07:34:52,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:34:52,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 07:34:52,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:52,343 INFO L225 Difference]: With dead ends: 99700 [2020-12-22 07:34:52,343 INFO L226 Difference]: Without dead ends: 35921 [2020-12-22 07:34:52,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:52,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35921 states. [2020-12-22 07:34:55,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35921 to 35589. [2020-12-22 07:34:55,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35589 states. [2020-12-22 07:34:55,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35589 states to 35589 states and 46617 transitions. [2020-12-22 07:34:55,753 INFO L78 Accepts]: Start accepts. Automaton has 35589 states and 46617 transitions. Word has length 97 [2020-12-22 07:34:55,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:55,754 INFO L481 AbstractCegarLoop]: Abstraction has 35589 states and 46617 transitions. [2020-12-22 07:34:55,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:34:55,754 INFO L276 IsEmpty]: Start isEmpty. Operand 35589 states and 46617 transitions. [2020-12-22 07:34:55,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 07:34:55,757 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:55,757 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:55,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 07:34:55,757 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:55,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:55,758 INFO L82 PathProgramCache]: Analyzing trace with hash -58471165, now seen corresponding path program 1 times [2020-12-22 07:34:55,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:55,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533170902] [2020-12-22 07:34:55,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:55,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533170902] [2020-12-22 07:34:55,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:55,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:34:55,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781407634] [2020-12-22 07:34:55,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:34:55,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:55,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:34:55,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:55,812 INFO L87 Difference]: Start difference. First operand 35589 states and 46617 transitions. Second operand 3 states. [2020-12-22 07:34:57,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:57,811 INFO L93 Difference]: Finished difference Result 54733 states and 71876 transitions. [2020-12-22 07:34:57,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:34:57,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 07:34:57,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:57,833 INFO L225 Difference]: With dead ends: 54733 [2020-12-22 07:34:57,834 INFO L226 Difference]: Without dead ends: 23283 [2020-12-22 07:34:57,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:57,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23283 states. [2020-12-22 07:34:59,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23283 to 23281. [2020-12-22 07:34:59,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23281 states. [2020-12-22 07:34:59,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23281 states to 23281 states and 29853 transitions. [2020-12-22 07:34:59,969 INFO L78 Accepts]: Start accepts. Automaton has 23281 states and 29853 transitions. Word has length 97 [2020-12-22 07:34:59,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:59,969 INFO L481 AbstractCegarLoop]: Abstraction has 23281 states and 29853 transitions. [2020-12-22 07:34:59,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:34:59,970 INFO L276 IsEmpty]: Start isEmpty. Operand 23281 states and 29853 transitions. [2020-12-22 07:34:59,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 07:34:59,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:59,972 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:59,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 07:34:59,973 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:59,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:59,973 INFO L82 PathProgramCache]: Analyzing trace with hash 320648747, now seen corresponding path program 1 times [2020-12-22 07:34:59,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:59,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591861649] [2020-12-22 07:34:59,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:35:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 07:35:00,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591861649] [2020-12-22 07:35:00,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:35:00,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:35:00,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992868057] [2020-12-22 07:35:00,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:35:00,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:35:00,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:35:00,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:35:00,066 INFO L87 Difference]: Start difference. First operand 23281 states and 29853 transitions. Second operand 6 states. [2020-12-22 07:35:01,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:35:01,387 INFO L93 Difference]: Finished difference Result 34316 states and 44221 transitions. [2020-12-22 07:35:01,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:35:01,388 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-12-22 07:35:01,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:35:01,398 INFO L225 Difference]: With dead ends: 34316 [2020-12-22 07:35:01,398 INFO L226 Difference]: Without dead ends: 11187 [2020-12-22 07:35:01,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:35:01,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11187 states. [2020-12-22 07:35:02,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11187 to 11187. [2020-12-22 07:35:02,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11187 states. [2020-12-22 07:35:02,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11187 states to 11187 states and 14301 transitions. [2020-12-22 07:35:02,465 INFO L78 Accepts]: Start accepts. Automaton has 11187 states and 14301 transitions. Word has length 97 [2020-12-22 07:35:02,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:35:02,466 INFO L481 AbstractCegarLoop]: Abstraction has 11187 states and 14301 transitions. [2020-12-22 07:35:02,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:35:02,466 INFO L276 IsEmpty]: Start isEmpty. Operand 11187 states and 14301 transitions. [2020-12-22 07:35:02,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 07:35:02,467 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:35:02,467 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:35:02,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 07:35:02,467 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:35:02,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:35:02,468 INFO L82 PathProgramCache]: Analyzing trace with hash -64063125, now seen corresponding path program 1 times [2020-12-22 07:35:02,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:35:02,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329004805] [2020-12-22 07:35:02,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:35:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:35:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 07:35:02,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329004805] [2020-12-22 07:35:02,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:35:02,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:35:02,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012577224] [2020-12-22 07:35:02,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:35:02,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:35:02,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:35:02,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:35:02,549 INFO L87 Difference]: Start difference. First operand 11187 states and 14301 transitions. Second operand 6 states. [2020-12-22 07:35:03,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:35:03,528 INFO L93 Difference]: Finished difference Result 19559 states and 25107 transitions. [2020-12-22 07:35:03,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:35:03,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-12-22 07:35:03,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:35:03,535 INFO L225 Difference]: With dead ends: 19559 [2020-12-22 07:35:03,535 INFO L226 Difference]: Without dead ends: 8520 [2020-12-22 07:35:03,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:35:03,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8520 states. [2020-12-22 07:35:04,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8520 to 8520. [2020-12-22 07:35:04,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8520 states. [2020-12-22 07:35:04,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8520 states to 8520 states and 10817 transitions. [2020-12-22 07:35:04,307 INFO L78 Accepts]: Start accepts. Automaton has 8520 states and 10817 transitions. Word has length 97 [2020-12-22 07:35:04,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:35:04,307 INFO L481 AbstractCegarLoop]: Abstraction has 8520 states and 10817 transitions. [2020-12-22 07:35:04,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:35:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand 8520 states and 10817 transitions. [2020-12-22 07:35:04,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 07:35:04,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:35:04,309 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:35:04,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 07:35:04,309 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:35:04,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:35:04,310 INFO L82 PathProgramCache]: Analyzing trace with hash 729105995, now seen corresponding path program 1 times [2020-12-22 07:35:04,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:35:04,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547482239] [2020-12-22 07:35:04,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:35:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:35:04,376 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 07:35:04,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547482239] [2020-12-22 07:35:04,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:35:04,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:35:04,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312377360] [2020-12-22 07:35:04,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:35:04,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:35:04,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:35:04,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:35:04,378 INFO L87 Difference]: Start difference. First operand 8520 states and 10817 transitions. Second operand 6 states. [2020-12-22 07:35:06,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:35:06,010 INFO L93 Difference]: Finished difference Result 22876 states and 29421 transitions. [2020-12-22 07:35:06,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:35:06,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-12-22 07:35:06,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:35:06,025 INFO L225 Difference]: With dead ends: 22876 [2020-12-22 07:35:06,025 INFO L226 Difference]: Without dead ends: 14436 [2020-12-22 07:35:06,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:35:06,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14436 states. [2020-12-22 07:35:07,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14436 to 12978. [2020-12-22 07:35:07,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12978 states. [2020-12-22 07:35:07,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12978 states to 12978 states and 16513 transitions. [2020-12-22 07:35:07,302 INFO L78 Accepts]: Start accepts. Automaton has 12978 states and 16513 transitions. Word has length 97 [2020-12-22 07:35:07,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:35:07,302 INFO L481 AbstractCegarLoop]: Abstraction has 12978 states and 16513 transitions. [2020-12-22 07:35:07,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:35:07,302 INFO L276 IsEmpty]: Start isEmpty. Operand 12978 states and 16513 transitions. [2020-12-22 07:35:07,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 07:35:07,304 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:35:07,304 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:35:07,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 07:35:07,304 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:35:07,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:35:07,305 INFO L82 PathProgramCache]: Analyzing trace with hash -94994768, now seen corresponding path program 1 times [2020-12-22 07:35:07,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:35:07,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183028398] [2020-12-22 07:35:07,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:35:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:35:07,540 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:35:07,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183028398] [2020-12-22 07:35:07,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174821377] [2020-12-22 07:35:07,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:35:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:35:07,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 07:35:07,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:35:07,905 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:35:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:35:08,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:35:08,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 07:35:08,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268645927] [2020-12-22 07:35:08,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 07:35:08,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:35:08,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 07:35:08,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:35:08,196 INFO L87 Difference]: Start difference. First operand 12978 states and 16513 transitions. Second operand 17 states. [2020-12-22 07:35:15,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:35:15,298 INFO L93 Difference]: Finished difference Result 66960 states and 84667 transitions. [2020-12-22 07:35:15,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 07:35:15,299 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 98 [2020-12-22 07:35:15,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:35:15,354 INFO L225 Difference]: With dead ends: 66960 [2020-12-22 07:35:15,354 INFO L226 Difference]: Without dead ends: 54988 [2020-12-22 07:35:15,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=337, Invalid=995, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 07:35:15,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54988 states. [2020-12-22 07:35:19,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54988 to 32958. [2020-12-22 07:35:19,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32958 states. [2020-12-22 07:35:19,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32958 states to 32958 states and 41725 transitions. [2020-12-22 07:35:19,109 INFO L78 Accepts]: Start accepts. Automaton has 32958 states and 41725 transitions. Word has length 98 [2020-12-22 07:35:19,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:35:19,109 INFO L481 AbstractCegarLoop]: Abstraction has 32958 states and 41725 transitions. [2020-12-22 07:35:19,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 07:35:19,109 INFO L276 IsEmpty]: Start isEmpty. Operand 32958 states and 41725 transitions. [2020-12-22 07:35:19,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 07:35:19,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:35:19,112 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:35:19,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 07:35:19,326 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:35:19,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:35:19,327 INFO L82 PathProgramCache]: Analyzing trace with hash -2123580878, now seen corresponding path program 1 times [2020-12-22 07:35:19,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:35:19,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036612642] [2020-12-22 07:35:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:35:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:35:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:35:19,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036612642] [2020-12-22 07:35:19,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:35:19,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:35:19,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731334637] [2020-12-22 07:35:19,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:35:19,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:35:19,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:35:19,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:35:19,432 INFO L87 Difference]: Start difference. First operand 32958 states and 41725 transitions. Second operand 7 states. [2020-12-22 07:35:23,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:35:23,682 INFO L93 Difference]: Finished difference Result 68876 states and 87519 transitions. [2020-12-22 07:35:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:35:23,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-12-22 07:35:23,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:35:23,717 INFO L225 Difference]: With dead ends: 68876 [2020-12-22 07:35:23,717 INFO L226 Difference]: Without dead ends: 36162 [2020-12-22 07:35:23,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:35:23,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36162 states. [2020-12-22 07:35:27,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36162 to 36160. [2020-12-22 07:35:27,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36160 states. [2020-12-22 07:35:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36160 states to 36160 states and 45736 transitions. [2020-12-22 07:35:27,832 INFO L78 Accepts]: Start accepts. Automaton has 36160 states and 45736 transitions. Word has length 98 [2020-12-22 07:35:27,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:35:27,832 INFO L481 AbstractCegarLoop]: Abstraction has 36160 states and 45736 transitions. [2020-12-22 07:35:27,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:35:27,832 INFO L276 IsEmpty]: Start isEmpty. Operand 36160 states and 45736 transitions. [2020-12-22 07:35:27,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 07:35:27,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:35:27,835 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:35:27,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 07:35:27,836 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:35:27,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:35:27,836 INFO L82 PathProgramCache]: Analyzing trace with hash 29054276, now seen corresponding path program 1 times [2020-12-22 07:35:27,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:35:27,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108669639] [2020-12-22 07:35:27,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:35:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:35:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:35:28,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108669639] [2020-12-22 07:35:28,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653613717] [2020-12-22 07:35:28,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:35:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:35:28,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 07:35:28,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:35:28,535 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 19 [2020-12-22 07:35:28,773 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 07:35:28,970 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2020-12-22 07:35:29,453 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:35:29,481 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 07:35:29,493 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 07:35:29,501 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 07:35:29,714 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:30,139 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:30,800 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:31,031 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 07:35:31,317 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 07:35:31,685 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 07:37:55,567 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts