/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:35:06,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:35:06,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:35:06,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:35:06,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:35:06,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:35:06,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:35:06,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:35:06,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:35:06,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:35:06,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:35:06,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:35:06,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:35:06,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:35:06,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:35:06,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:35:06,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:35:06,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:35:06,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:35:06,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:35:06,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:35:06,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:35:06,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:35:06,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:35:06,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:35:06,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:35:06,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:35:06,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:35:06,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:35:06,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:35:06,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:35:06,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:35:06,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:35:06,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:35:06,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:35:06,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:35:06,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:35:06,188 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:35:06,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:35:06,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:35:06,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:35:06,193 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:35:06,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:35:06,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:35:06,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:35:06,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:35:06,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:35:06,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:35:06,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:35:06,196 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:35:06,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:35:06,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:35:06,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:35:06,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:35:06,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:35:06,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:35:06,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:35:06,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:35:06,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:35:06,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:35:06,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:35:06,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:35:06,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:35:06,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:35:06,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:35:06,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:35:06,690 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:35:06,691 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:35:06,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-12-22 08:35:06,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dae4c613/918c86d7f6324c1086d6352153bc7531/FLAG5ac5a033f [2020-12-22 08:35:07,378 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:35:07,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-12-22 08:35:07,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dae4c613/918c86d7f6324c1086d6352153bc7531/FLAG5ac5a033f [2020-12-22 08:35:07,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dae4c613/918c86d7f6324c1086d6352153bc7531 [2020-12-22 08:35:07,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:35:07,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:35:07,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:35:07,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:35:07,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:35:07,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:35:07" (1/1) ... [2020-12-22 08:35:07,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d0763d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:07, skipping insertion in model container [2020-12-22 08:35:07,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:35:07" (1/1) ... [2020-12-22 08:35:07,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:35:07,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:35:08,095 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6959,6972] [2020-12-22 08:35:08,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:35:08,158 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:35:08,234 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6959,6972] [2020-12-22 08:35:08,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:35:08,290 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:35:08,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08 WrapperNode [2020-12-22 08:35:08,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:35:08,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:35:08,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:35:08,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:35:08,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... [2020-12-22 08:35:08,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... [2020-12-22 08:35:08,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:35:08,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:35:08,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:35:08,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:35:08,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... [2020-12-22 08:35:08,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... [2020-12-22 08:35:08,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... [2020-12-22 08:35:08,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... [2020-12-22 08:35:08,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... [2020-12-22 08:35:08,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... [2020-12-22 08:35:08,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... [2020-12-22 08:35:08,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:35:08,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:35:08,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:35:08,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:35:08,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:35:08,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:35:08,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:35:08,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:35:08,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:35:09,444 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:35:09,446 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:35:09,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:35:09 BoogieIcfgContainer [2020-12-22 08:35:09,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:35:09,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:35:09,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:35:09,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:35:09,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:35:07" (1/3) ... [2020-12-22 08:35:09,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b9a57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:35:09, skipping insertion in model container [2020-12-22 08:35:09,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (2/3) ... [2020-12-22 08:35:09,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b9a57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:35:09, skipping insertion in model container [2020-12-22 08:35:09,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:35:09" (3/3) ... [2020-12-22 08:35:09,463 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-12-22 08:35:09,471 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:35:09,478 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:35:09,502 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:35:09,547 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:35:09,548 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:35:09,548 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:35:09,548 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:35:09,548 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:35:09,548 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:35:09,549 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:35:09,549 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:35:09,574 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states. [2020-12-22 08:35:09,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:35:09,585 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:09,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:35:09,586 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:09,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:09,592 INFO L82 PathProgramCache]: Analyzing trace with hash -652154134, now seen corresponding path program 1 times [2020-12-22 08:35:09,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:09,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976483126] [2020-12-22 08:35:09,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:10,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:35:10,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976483126] [2020-12-22 08:35:10,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:10,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:35:10,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687190397] [2020-12-22 08:35:10,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:35:10,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:10,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:35:10,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:10,135 INFO L87 Difference]: Start difference. First operand 163 states. Second operand 3 states. [2020-12-22 08:35:10,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:10,292 INFO L93 Difference]: Finished difference Result 385 states and 627 transitions. [2020-12-22 08:35:10,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:35:10,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 08:35:10,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:10,333 INFO L225 Difference]: With dead ends: 385 [2020-12-22 08:35:10,334 INFO L226 Difference]: Without dead ends: 260 [2020-12-22 08:35:10,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:10,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-12-22 08:35:10,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 258. [2020-12-22 08:35:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-12-22 08:35:10,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 386 transitions. [2020-12-22 08:35:10,462 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 386 transitions. Word has length 73 [2020-12-22 08:35:10,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:10,463 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 386 transitions. [2020-12-22 08:35:10,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:35:10,464 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 386 transitions. [2020-12-22 08:35:10,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 08:35:10,471 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:10,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:35:10,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:35:10,473 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:10,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:10,475 INFO L82 PathProgramCache]: Analyzing trace with hash -399717739, now seen corresponding path program 1 times [2020-12-22 08:35:10,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:10,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056958313] [2020-12-22 08:35:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:35:10,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056958313] [2020-12-22 08:35:10,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:10,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:35:10,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332026198] [2020-12-22 08:35:10,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:35:10,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:10,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:35:10,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:10,658 INFO L87 Difference]: Start difference. First operand 258 states and 386 transitions. Second operand 3 states. [2020-12-22 08:35:10,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:10,706 INFO L93 Difference]: Finished difference Result 654 states and 1018 transitions. [2020-12-22 08:35:10,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:35:10,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 08:35:10,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:10,711 INFO L225 Difference]: With dead ends: 654 [2020-12-22 08:35:10,711 INFO L226 Difference]: Without dead ends: 440 [2020-12-22 08:35:10,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:10,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-12-22 08:35:10,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 438. [2020-12-22 08:35:10,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2020-12-22 08:35:10,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 673 transitions. [2020-12-22 08:35:10,747 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 673 transitions. Word has length 74 [2020-12-22 08:35:10,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:10,748 INFO L481 AbstractCegarLoop]: Abstraction has 438 states and 673 transitions. [2020-12-22 08:35:10,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:35:10,748 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 673 transitions. [2020-12-22 08:35:10,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 08:35:10,751 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:10,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:35:10,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:35:10,751 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:10,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:10,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1868398039, now seen corresponding path program 1 times [2020-12-22 08:35:10,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:10,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304632884] [2020-12-22 08:35:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:10,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:35:10,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304632884] [2020-12-22 08:35:10,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:10,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:35:10,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226573638] [2020-12-22 08:35:10,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:35:10,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:10,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:35:10,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:10,923 INFO L87 Difference]: Start difference. First operand 438 states and 673 transitions. Second operand 3 states. [2020-12-22 08:35:11,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:11,008 INFO L93 Difference]: Finished difference Result 1162 states and 1827 transitions. [2020-12-22 08:35:11,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:35:11,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 08:35:11,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:11,016 INFO L225 Difference]: With dead ends: 1162 [2020-12-22 08:35:11,017 INFO L226 Difference]: Without dead ends: 768 [2020-12-22 08:35:11,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:11,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-12-22 08:35:11,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 766. [2020-12-22 08:35:11,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2020-12-22 08:35:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1193 transitions. [2020-12-22 08:35:11,069 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1193 transitions. Word has length 75 [2020-12-22 08:35:11,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:11,070 INFO L481 AbstractCegarLoop]: Abstraction has 766 states and 1193 transitions. [2020-12-22 08:35:11,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:35:11,071 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1193 transitions. [2020-12-22 08:35:11,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:35:11,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:11,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:35:11,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:35:11,074 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:11,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:11,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1093755554, now seen corresponding path program 1 times [2020-12-22 08:35:11,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:11,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61503064] [2020-12-22 08:35:11,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:11,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:35:11,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61503064] [2020-12-22 08:35:11,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:11,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:35:11,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590258497] [2020-12-22 08:35:11,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:35:11,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:11,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:35:11,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:11,168 INFO L87 Difference]: Start difference. First operand 766 states and 1193 transitions. Second operand 3 states. [2020-12-22 08:35:11,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:11,253 INFO L93 Difference]: Finished difference Result 2082 states and 3283 transitions. [2020-12-22 08:35:11,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:35:11,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 08:35:11,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:11,263 INFO L225 Difference]: With dead ends: 2082 [2020-12-22 08:35:11,263 INFO L226 Difference]: Without dead ends: 1360 [2020-12-22 08:35:11,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:11,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-12-22 08:35:11,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1358. [2020-12-22 08:35:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2020-12-22 08:35:11,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 2125 transitions. [2020-12-22 08:35:11,341 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 2125 transitions. Word has length 76 [2020-12-22 08:35:11,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:11,341 INFO L481 AbstractCegarLoop]: Abstraction has 1358 states and 2125 transitions. [2020-12-22 08:35:11,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:35:11,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 2125 transitions. [2020-12-22 08:35:11,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:35:11,343 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:11,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:35:11,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:35:11,343 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:11,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:11,344 INFO L82 PathProgramCache]: Analyzing trace with hash 2108543356, now seen corresponding path program 1 times [2020-12-22 08:35:11,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:11,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487411435] [2020-12-22 08:35:11,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:35:11,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487411435] [2020-12-22 08:35:11,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:11,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:35:11,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190446303] [2020-12-22 08:35:11,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:35:11,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:11,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:35:11,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:11,475 INFO L87 Difference]: Start difference. First operand 1358 states and 2125 transitions. Second operand 3 states. [2020-12-22 08:35:11,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:11,638 INFO L93 Difference]: Finished difference Result 3730 states and 5871 transitions. [2020-12-22 08:35:11,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:35:11,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 08:35:11,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:11,653 INFO L225 Difference]: With dead ends: 3730 [2020-12-22 08:35:11,653 INFO L226 Difference]: Without dead ends: 2416 [2020-12-22 08:35:11,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:11,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2020-12-22 08:35:11,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2414. [2020-12-22 08:35:11,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2414 states. [2020-12-22 08:35:11,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 3773 transitions. [2020-12-22 08:35:11,813 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 3773 transitions. Word has length 77 [2020-12-22 08:35:11,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:11,814 INFO L481 AbstractCegarLoop]: Abstraction has 2414 states and 3773 transitions. [2020-12-22 08:35:11,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:35:11,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 3773 transitions. [2020-12-22 08:35:11,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:35:11,820 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:11,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:35:11,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:35:11,821 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:11,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:11,822 INFO L82 PathProgramCache]: Analyzing trace with hash -741254085, now seen corresponding path program 1 times [2020-12-22 08:35:11,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:11,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252249326] [2020-12-22 08:35:11,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:35:11,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252249326] [2020-12-22 08:35:11,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:11,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:35:11,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024414100] [2020-12-22 08:35:11,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:35:11,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:11,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:35:11,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:11,960 INFO L87 Difference]: Start difference. First operand 2414 states and 3773 transitions. Second operand 3 states. [2020-12-22 08:35:12,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:12,219 INFO L93 Difference]: Finished difference Result 6642 states and 10399 transitions. [2020-12-22 08:35:12,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:35:12,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 08:35:12,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:12,241 INFO L225 Difference]: With dead ends: 6642 [2020-12-22 08:35:12,242 INFO L226 Difference]: Without dead ends: 4272 [2020-12-22 08:35:12,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:12,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4272 states. [2020-12-22 08:35:12,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4272 to 4270. [2020-12-22 08:35:12,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4270 states. [2020-12-22 08:35:12,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4270 states to 4270 states and 6637 transitions. [2020-12-22 08:35:12,494 INFO L78 Accepts]: Start accepts. Automaton has 4270 states and 6637 transitions. Word has length 78 [2020-12-22 08:35:12,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:12,495 INFO L481 AbstractCegarLoop]: Abstraction has 4270 states and 6637 transitions. [2020-12-22 08:35:12,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:35:12,495 INFO L276 IsEmpty]: Start isEmpty. Operand 4270 states and 6637 transitions. [2020-12-22 08:35:12,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 08:35:12,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:12,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:35:12,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:35:12,499 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:12,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:12,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1744404253, now seen corresponding path program 1 times [2020-12-22 08:35:12,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:12,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818011082] [2020-12-22 08:35:12,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:12,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:35:12,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818011082] [2020-12-22 08:35:12,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:12,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:35:12,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467555294] [2020-12-22 08:35:12,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:35:12,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:12,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:35:12,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:35:12,814 INFO L87 Difference]: Start difference. First operand 4270 states and 6637 transitions. Second operand 8 states. [2020-12-22 08:35:14,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:14,341 INFO L93 Difference]: Finished difference Result 25786 states and 39859 transitions. [2020-12-22 08:35:14,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:35:14,342 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-12-22 08:35:14,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:14,461 INFO L225 Difference]: With dead ends: 25786 [2020-12-22 08:35:14,462 INFO L226 Difference]: Without dead ends: 21560 [2020-12-22 08:35:14,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:35:14,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21560 states. [2020-12-22 08:35:16,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21560 to 21550. [2020-12-22 08:35:16,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21550 states. [2020-12-22 08:35:16,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21550 states to 21550 states and 33197 transitions. [2020-12-22 08:35:16,166 INFO L78 Accepts]: Start accepts. Automaton has 21550 states and 33197 transitions. Word has length 79 [2020-12-22 08:35:16,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:16,167 INFO L481 AbstractCegarLoop]: Abstraction has 21550 states and 33197 transitions. [2020-12-22 08:35:16,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:35:16,167 INFO L276 IsEmpty]: Start isEmpty. Operand 21550 states and 33197 transitions. [2020-12-22 08:35:16,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:35:16,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:16,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:35:16,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:35:16,169 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:16,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:16,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1015653356, now seen corresponding path program 1 times [2020-12-22 08:35:16,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:16,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025758922] [2020-12-22 08:35:16,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:16,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:35:16,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025758922] [2020-12-22 08:35:16,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:16,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:35:16,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371657279] [2020-12-22 08:35:16,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:35:16,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:16,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:35:16,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:35:16,277 INFO L87 Difference]: Start difference. First operand 21550 states and 33197 transitions. Second operand 6 states. [2020-12-22 08:35:19,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:19,674 INFO L93 Difference]: Finished difference Result 81812 states and 125936 transitions. [2020-12-22 08:35:19,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:35:19,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-22 08:35:19,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:19,847 INFO L225 Difference]: With dead ends: 81812 [2020-12-22 08:35:19,848 INFO L226 Difference]: Without dead ends: 60306 [2020-12-22 08:35:19,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:35:19,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60306 states. [2020-12-22 08:35:23,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60306 to 60302. [2020-12-22 08:35:23,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60302 states. [2020-12-22 08:35:23,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60302 states to 60302 states and 92429 transitions. [2020-12-22 08:35:23,788 INFO L78 Accepts]: Start accepts. Automaton has 60302 states and 92429 transitions. Word has length 81 [2020-12-22 08:35:23,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:23,788 INFO L481 AbstractCegarLoop]: Abstraction has 60302 states and 92429 transitions. [2020-12-22 08:35:23,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:35:23,788 INFO L276 IsEmpty]: Start isEmpty. Operand 60302 states and 92429 transitions. [2020-12-22 08:35:23,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:35:23,790 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:23,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:35:23,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:35:23,790 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:23,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:23,791 INFO L82 PathProgramCache]: Analyzing trace with hash 858705489, now seen corresponding path program 1 times [2020-12-22 08:35:23,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:23,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555227064] [2020-12-22 08:35:23,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:24,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:35:24,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555227064] [2020-12-22 08:35:24,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:24,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:35:24,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019347748] [2020-12-22 08:35:24,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:35:24,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:24,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:35:24,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:35:24,079 INFO L87 Difference]: Start difference. First operand 60302 states and 92429 transitions. Second operand 8 states. [2020-12-22 08:35:36,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:36,813 INFO L93 Difference]: Finished difference Result 348828 states and 535444 transitions. [2020-12-22 08:35:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:35:36,814 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-12-22 08:35:36,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:37,845 INFO L225 Difference]: With dead ends: 348828 [2020-12-22 08:35:37,846 INFO L226 Difference]: Without dead ends: 288570 [2020-12-22 08:35:38,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:35:38,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288570 states. [2020-12-22 08:35:47,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288570 to 120558. [2020-12-22 08:35:47,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120558 states. [2020-12-22 08:35:48,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120558 states to 120558 states and 182637 transitions. [2020-12-22 08:35:48,372 INFO L78 Accepts]: Start accepts. Automaton has 120558 states and 182637 transitions. Word has length 81 [2020-12-22 08:35:48,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:48,372 INFO L481 AbstractCegarLoop]: Abstraction has 120558 states and 182637 transitions. [2020-12-22 08:35:48,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:35:48,373 INFO L276 IsEmpty]: Start isEmpty. Operand 120558 states and 182637 transitions. [2020-12-22 08:35:48,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:35:48,374 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:48,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:35:48,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:35:48,374 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:48,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:48,375 INFO L82 PathProgramCache]: Analyzing trace with hash 830610186, now seen corresponding path program 1 times [2020-12-22 08:35:48,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:48,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171804883] [2020-12-22 08:35:48,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:48,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:35:48,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171804883] [2020-12-22 08:35:48,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:48,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:35:48,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235642172] [2020-12-22 08:35:48,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:35:48,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:48,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:35:48,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:35:48,500 INFO L87 Difference]: Start difference. First operand 120558 states and 182637 transitions. Second operand 5 states. [2020-12-22 08:36:02,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:02,481 INFO L93 Difference]: Finished difference Result 245424 states and 369582 transitions. [2020-12-22 08:36:02,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:36:02,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-12-22 08:36:02,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:03,088 INFO L225 Difference]: With dead ends: 245424 [2020-12-22 08:36:03,088 INFO L226 Difference]: Without dead ends: 245422 [2020-12-22 08:36:03,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:36:03,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245422 states. [2020-12-22 08:36:12,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245422 to 124910. [2020-12-22 08:36:12,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124910 states. [2020-12-22 08:36:13,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124910 states to 124910 states and 186989 transitions. [2020-12-22 08:36:13,324 INFO L78 Accepts]: Start accepts. Automaton has 124910 states and 186989 transitions. Word has length 82 [2020-12-22 08:36:13,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:13,324 INFO L481 AbstractCegarLoop]: Abstraction has 124910 states and 186989 transitions. [2020-12-22 08:36:13,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:36:13,324 INFO L276 IsEmpty]: Start isEmpty. Operand 124910 states and 186989 transitions. [2020-12-22 08:36:13,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:36:13,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:13,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:36:13,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:36:13,327 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:13,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:13,333 INFO L82 PathProgramCache]: Analyzing trace with hash -10314879, now seen corresponding path program 1 times [2020-12-22 08:36:13,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:13,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502243759] [2020-12-22 08:36:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:13,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502243759] [2020-12-22 08:36:13,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:13,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:36:13,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021947127] [2020-12-22 08:36:13,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:36:13,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:13,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:36:13,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:36:13,414 INFO L87 Difference]: Start difference. First operand 124910 states and 186989 transitions. Second operand 3 states. [2020-12-22 08:36:23,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:23,328 INFO L93 Difference]: Finished difference Result 270676 states and 404737 transitions. [2020-12-22 08:36:23,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:36:23,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 08:36:23,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:23,746 INFO L225 Difference]: With dead ends: 270676 [2020-12-22 08:36:23,746 INFO L226 Difference]: Without dead ends: 145810 [2020-12-22 08:36:23,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:36:23,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145810 states. [2020-12-22 08:36:34,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145810 to 145808. [2020-12-22 08:36:34,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145808 states. [2020-12-22 08:36:34,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145808 states to 145808 states and 217439 transitions. [2020-12-22 08:36:34,531 INFO L78 Accepts]: Start accepts. Automaton has 145808 states and 217439 transitions. Word has length 83 [2020-12-22 08:36:34,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:34,531 INFO L481 AbstractCegarLoop]: Abstraction has 145808 states and 217439 transitions. [2020-12-22 08:36:34,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:36:34,531 INFO L276 IsEmpty]: Start isEmpty. Operand 145808 states and 217439 transitions. [2020-12-22 08:36:34,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 08:36:34,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:34,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:36:34,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:36:34,587 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:34,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:34,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1809041298, now seen corresponding path program 1 times [2020-12-22 08:36:34,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:34,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954930900] [2020-12-22 08:36:34,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:34,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954930900] [2020-12-22 08:36:34,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279746602] [2020-12-22 08:36:34,883 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 08:36:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:35,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 08:36:35,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:36:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:36:35,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:36:35,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 14 [2020-12-22 08:36:35,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74420952] [2020-12-22 08:36:35,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 08:36:35,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:35,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 08:36:35,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:36:35,417 INFO L87 Difference]: Start difference. First operand 145808 states and 217439 transitions. Second operand 14 states. [2020-12-22 08:38:42,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:38:42,291 INFO L93 Difference]: Finished difference Result 1560862 states and 2308359 transitions. [2020-12-22 08:38:42,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2020-12-22 08:38:42,292 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 112 [2020-12-22 08:38:42,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:38:45,894 INFO L225 Difference]: With dead ends: 1560862 [2020-12-22 08:38:45,894 INFO L226 Difference]: Without dead ends: 1415100 [2020-12-22 08:38:46,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6794 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3063, Invalid=12437, Unknown=0, NotChecked=0, Total=15500 [2020-12-22 08:38:48,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415100 states.