/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.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:31:16,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:31:16,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:31:16,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:31:16,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:31:16,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:31:16,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:31:16,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:31:16,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:31:16,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:31:16,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:31:16,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:31:16,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:31:16,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:31:16,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:31:16,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:31:16,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:31:16,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:31:16,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:31:16,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:31:16,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:31:16,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:31:16,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:31:16,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:31:16,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:31:16,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:31:16,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:31:16,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:31:16,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:31:16,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:31:16,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:31:16,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:31:16,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:31:16,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:31:16,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:31:16,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:31:16,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:31:16,636 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:31:16,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:31:16,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:31:16,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:31:16,640 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:31:16,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:31:16,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:31:16,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:31:16,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:31:16,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:31:16,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:31:16,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:31:16,644 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:31:16,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:31:16,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:31:16,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:31:16,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:31:16,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:31:16,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:31:16,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:31:16,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:31:16,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:31:16,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:31:16,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:31:16,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:31:16,647 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:31:17,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:31:17,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:31:17,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:31:17,104 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:31:17,104 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:31:17,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-12-22 08:31:17,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25693add4/18bb63fb87654988a4b61e9ffaff9f86/FLAG94e102240 [2020-12-22 08:31:17,989 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:31:17,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-12-22 08:31:18,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25693add4/18bb63fb87654988a4b61e9ffaff9f86/FLAG94e102240 [2020-12-22 08:31:18,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25693add4/18bb63fb87654988a4b61e9ffaff9f86 [2020-12-22 08:31:18,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:31:18,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:31:18,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:31:18,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:31:18,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:31:18,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:31:18" (1/1) ... [2020-12-22 08:31:18,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3acf0ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:18, skipping insertion in model container [2020-12-22 08:31:18,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:31:18" (1/1) ... [2020-12-22 08:31:18,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:31:18,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:31:18,642 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.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[10697,10710] [2020-12-22 08:31:18,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:31:18,750 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:31:18,851 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.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[10697,10710] [2020-12-22 08:31:18,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:31:19,008 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:31:19,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:19 WrapperNode [2020-12-22 08:31:19,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:31:19,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:31:19,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:31:19,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:31:19,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:19" (1/1) ... [2020-12-22 08:31:19,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:19" (1/1) ... [2020-12-22 08:31:19,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:31:19,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:31:19,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:31:19,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:31:19,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:19" (1/1) ... [2020-12-22 08:31:19,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:19" (1/1) ... [2020-12-22 08:31:19,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:19" (1/1) ... [2020-12-22 08:31:19,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:19" (1/1) ... [2020-12-22 08:31:19,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:19" (1/1) ... [2020-12-22 08:31:19,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:19" (1/1) ... [2020-12-22 08:31:19,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:19" (1/1) ... [2020-12-22 08:31:19,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:31:19,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:31:19,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:31:19,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:31:19,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:19" (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 08:31:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:31:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:31:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:31:19,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:31:20,618 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:31:20,619 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:31:20,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:31:20 BoogieIcfgContainer [2020-12-22 08:31:20,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:31:20,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:31:20,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:31:20,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:31:20,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:31:18" (1/3) ... [2020-12-22 08:31:20,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69dc8890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:31:20, skipping insertion in model container [2020-12-22 08:31:20,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:19" (2/3) ... [2020-12-22 08:31:20,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69dc8890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:31:20, skipping insertion in model container [2020-12-22 08:31:20,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:31:20" (3/3) ... [2020-12-22 08:31:20,638 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-12-22 08:31:20,645 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:31:20,651 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:31:20,671 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:31:20,702 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:31:20,702 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:31:20,702 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:31:20,703 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:31:20,703 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:31:20,703 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:31:20,703 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:31:20,703 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:31:20,729 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states. [2020-12-22 08:31:20,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 08:31:20,745 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:20,746 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 08:31:20,746 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:20,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:20,753 INFO L82 PathProgramCache]: Analyzing trace with hash 498035691, now seen corresponding path program 1 times [2020-12-22 08:31:20,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:20,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462417536] [2020-12-22 08:31:20,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:21,159 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 08:31:21,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462417536] [2020-12-22 08:31:21,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:21,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:31:21,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175343999] [2020-12-22 08:31:21,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:31:21,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:21,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:31:21,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:31:21,188 INFO L87 Difference]: Start difference. First operand 330 states. Second operand 4 states. [2020-12-22 08:31:21,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:21,407 INFO L93 Difference]: Finished difference Result 632 states and 1022 transitions. [2020-12-22 08:31:21,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:31:21,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-12-22 08:31:21,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:21,428 INFO L225 Difference]: With dead ends: 632 [2020-12-22 08:31:21,428 INFO L226 Difference]: Without dead ends: 327 [2020-12-22 08:31:21,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:31:21,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-12-22 08:31:21,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2020-12-22 08:31:21,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-12-22 08:31:21,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 501 transitions. [2020-12-22 08:31:21,628 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 501 transitions. Word has length 79 [2020-12-22 08:31:21,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:21,628 INFO L481 AbstractCegarLoop]: Abstraction has 327 states and 501 transitions. [2020-12-22 08:31:21,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:31:21,629 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 501 transitions. [2020-12-22 08:31:21,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 08:31:21,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:21,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:21,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:31:21,637 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:21,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:21,638 INFO L82 PathProgramCache]: Analyzing trace with hash 2093359288, now seen corresponding path program 1 times [2020-12-22 08:31:21,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:21,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887747329] [2020-12-22 08:31:21,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:21,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:21,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887747329] [2020-12-22 08:31:21,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:21,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:21,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094725542] [2020-12-22 08:31:21,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:21,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:21,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:21,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:21,935 INFO L87 Difference]: Start difference. First operand 327 states and 501 transitions. Second operand 3 states. [2020-12-22 08:31:22,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:22,036 INFO L93 Difference]: Finished difference Result 761 states and 1193 transitions. [2020-12-22 08:31:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:22,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2020-12-22 08:31:22,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:22,043 INFO L225 Difference]: With dead ends: 761 [2020-12-22 08:31:22,043 INFO L226 Difference]: Without dead ends: 483 [2020-12-22 08:31:22,046 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 08:31:22,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-12-22 08:31:22,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 481. [2020-12-22 08:31:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2020-12-22 08:31:22,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 745 transitions. [2020-12-22 08:31:22,095 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 745 transitions. Word has length 110 [2020-12-22 08:31:22,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:22,095 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 745 transitions. [2020-12-22 08:31:22,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:22,096 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 745 transitions. [2020-12-22 08:31:22,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 08:31:22,108 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:22,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:22,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:31:22,112 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:22,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:22,113 INFO L82 PathProgramCache]: Analyzing trace with hash -55375790, now seen corresponding path program 1 times [2020-12-22 08:31:22,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:22,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607915721] [2020-12-22 08:31:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:22,292 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 08:31:22,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607915721] [2020-12-22 08:31:22,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:22,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:22,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313795544] [2020-12-22 08:31:22,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:22,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:22,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:22,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:22,295 INFO L87 Difference]: Start difference. First operand 481 states and 745 transitions. Second operand 3 states. [2020-12-22 08:31:22,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:22,387 INFO L93 Difference]: Finished difference Result 1163 states and 1832 transitions. [2020-12-22 08:31:22,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:22,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2020-12-22 08:31:22,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:22,396 INFO L225 Difference]: With dead ends: 1163 [2020-12-22 08:31:22,396 INFO L226 Difference]: Without dead ends: 744 [2020-12-22 08:31:22,403 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 08:31:22,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-12-22 08:31:22,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 742. [2020-12-22 08:31:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2020-12-22 08:31:22,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1158 transitions. [2020-12-22 08:31:22,515 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1158 transitions. Word has length 112 [2020-12-22 08:31:22,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:22,520 INFO L481 AbstractCegarLoop]: Abstraction has 742 states and 1158 transitions. [2020-12-22 08:31:22,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:22,521 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1158 transitions. [2020-12-22 08:31:22,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 08:31:22,531 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:22,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:22,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:31:22,532 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:22,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:22,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1569587546, now seen corresponding path program 1 times [2020-12-22 08:31:22,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:22,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206077175] [2020-12-22 08:31:22,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:22,725 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 08:31:22,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206077175] [2020-12-22 08:31:22,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:22,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:22,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345382731] [2020-12-22 08:31:22,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:22,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:22,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:22,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:22,730 INFO L87 Difference]: Start difference. First operand 742 states and 1158 transitions. Second operand 3 states. [2020-12-22 08:31:22,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:22,814 INFO L93 Difference]: Finished difference Result 1834 states and 2894 transitions. [2020-12-22 08:31:22,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:22,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2020-12-22 08:31:22,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:22,824 INFO L225 Difference]: With dead ends: 1834 [2020-12-22 08:31:22,824 INFO L226 Difference]: Without dead ends: 1167 [2020-12-22 08:31:22,826 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 08:31:22,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-12-22 08:31:22,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1165. [2020-12-22 08:31:22,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1165 states. [2020-12-22 08:31:22,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1824 transitions. [2020-12-22 08:31:22,891 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1824 transitions. Word has length 114 [2020-12-22 08:31:22,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:22,893 INFO L481 AbstractCegarLoop]: Abstraction has 1165 states and 1824 transitions. [2020-12-22 08:31:22,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:22,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1824 transitions. [2020-12-22 08:31:22,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 08:31:22,899 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:22,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:22,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:31:22,900 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:22,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:22,901 INFO L82 PathProgramCache]: Analyzing trace with hash -598144290, now seen corresponding path program 1 times [2020-12-22 08:31:22,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:22,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509387800] [2020-12-22 08:31:22,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:23,028 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 08:31:23,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509387800] [2020-12-22 08:31:23,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:23,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:23,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058991229] [2020-12-22 08:31:23,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:23,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:23,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:23,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:23,034 INFO L87 Difference]: Start difference. First operand 1165 states and 1824 transitions. Second operand 3 states. [2020-12-22 08:31:23,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:23,158 INFO L93 Difference]: Finished difference Result 2887 states and 4547 transitions. [2020-12-22 08:31:23,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:23,159 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2020-12-22 08:31:23,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:23,169 INFO L225 Difference]: With dead ends: 2887 [2020-12-22 08:31:23,170 INFO L226 Difference]: Without dead ends: 1810 [2020-12-22 08:31:23,172 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 08:31:23,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2020-12-22 08:31:23,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1808. [2020-12-22 08:31:23,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1808 states. [2020-12-22 08:31:23,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2826 transitions. [2020-12-22 08:31:23,280 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2826 transitions. Word has length 116 [2020-12-22 08:31:23,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:23,280 INFO L481 AbstractCegarLoop]: Abstraction has 1808 states and 2826 transitions. [2020-12-22 08:31:23,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:23,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2826 transitions. [2020-12-22 08:31:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 08:31:23,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:23,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:23,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:31:23,288 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:23,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:23,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1082431554, now seen corresponding path program 1 times [2020-12-22 08:31:23,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:23,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890184194] [2020-12-22 08:31:23,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:23,396 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 08:31:23,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890184194] [2020-12-22 08:31:23,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:23,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:23,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734303396] [2020-12-22 08:31:23,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:23,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:23,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:23,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:23,401 INFO L87 Difference]: Start difference. First operand 1808 states and 2826 transitions. Second operand 3 states. [2020-12-22 08:31:23,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:23,580 INFO L93 Difference]: Finished difference Result 4392 states and 6872 transitions. [2020-12-22 08:31:23,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:23,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2020-12-22 08:31:23,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:23,596 INFO L225 Difference]: With dead ends: 4392 [2020-12-22 08:31:23,597 INFO L226 Difference]: Without dead ends: 2685 [2020-12-22 08:31:23,600 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 08:31:23,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2020-12-22 08:31:23,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2683. [2020-12-22 08:31:23,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2683 states. [2020-12-22 08:31:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2683 states to 2683 states and 4160 transitions. [2020-12-22 08:31:23,774 INFO L78 Accepts]: Start accepts. Automaton has 2683 states and 4160 transitions. Word has length 118 [2020-12-22 08:31:23,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:23,774 INFO L481 AbstractCegarLoop]: Abstraction has 2683 states and 4160 transitions. [2020-12-22 08:31:23,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:23,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2683 states and 4160 transitions. [2020-12-22 08:31:23,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-22 08:31:23,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:23,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:23,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:31:23,783 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:23,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:23,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1267336044, now seen corresponding path program 1 times [2020-12-22 08:31:23,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:23,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074668437] [2020-12-22 08:31:23,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:24,153 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 08:31:24,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074668437] [2020-12-22 08:31:24,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:24,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:31:24,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181917732] [2020-12-22 08:31:24,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:31:24,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:24,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:31:24,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:24,157 INFO L87 Difference]: Start difference. First operand 2683 states and 4160 transitions. Second operand 7 states. [2020-12-22 08:31:25,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:25,293 INFO L93 Difference]: Finished difference Result 13585 states and 20972 transitions. [2020-12-22 08:31:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:31:25,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-12-22 08:31:25,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:25,351 INFO L225 Difference]: With dead ends: 13585 [2020-12-22 08:31:25,351 INFO L226 Difference]: Without dead ends: 10997 [2020-12-22 08:31:25,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:25,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10997 states. [2020-12-22 08:31:26,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10997 to 10989. [2020-12-22 08:31:26,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10989 states. [2020-12-22 08:31:26,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10989 states to 10989 states and 16865 transitions. [2020-12-22 08:31:26,254 INFO L78 Accepts]: Start accepts. Automaton has 10989 states and 16865 transitions. Word has length 120 [2020-12-22 08:31:26,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:26,255 INFO L481 AbstractCegarLoop]: Abstraction has 10989 states and 16865 transitions. [2020-12-22 08:31:26,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:31:26,255 INFO L276 IsEmpty]: Start isEmpty. Operand 10989 states and 16865 transitions. [2020-12-22 08:31:26,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 08:31:26,283 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:26,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:26,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:31:26,284 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:26,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:26,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1888610653, now seen corresponding path program 1 times [2020-12-22 08:31:26,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:26,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872677726] [2020-12-22 08:31:26,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:26,445 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 08:31:26,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872677726] [2020-12-22 08:31:26,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:26,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:26,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086415567] [2020-12-22 08:31:26,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:26,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:26,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:26,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:26,448 INFO L87 Difference]: Start difference. First operand 10989 states and 16865 transitions. Second operand 3 states. [2020-12-22 08:31:27,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:27,901 INFO L93 Difference]: Finished difference Result 27983 states and 42949 transitions. [2020-12-22 08:31:27,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:27,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-12-22 08:31:27,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:27,993 INFO L225 Difference]: With dead ends: 27983 [2020-12-22 08:31:27,994 INFO L226 Difference]: Without dead ends: 19183 [2020-12-22 08:31:28,010 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 08:31:28,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19183 states. [2020-12-22 08:31:29,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19183 to 19181. [2020-12-22 08:31:29,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19181 states. [2020-12-22 08:31:29,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19181 states to 19181 states and 29233 transitions. [2020-12-22 08:31:29,531 INFO L78 Accepts]: Start accepts. Automaton has 19181 states and 29233 transitions. Word has length 122 [2020-12-22 08:31:29,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:29,532 INFO L481 AbstractCegarLoop]: Abstraction has 19181 states and 29233 transitions. [2020-12-22 08:31:29,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:29,532 INFO L276 IsEmpty]: Start isEmpty. Operand 19181 states and 29233 transitions. [2020-12-22 08:31:29,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 08:31:29,589 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:29,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:29,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:31:29,590 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:29,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:29,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1052580555, now seen corresponding path program 1 times [2020-12-22 08:31:29,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:29,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303033226] [2020-12-22 08:31:29,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:29,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:29,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303033226] [2020-12-22 08:31:29,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:29,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:29,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206544054] [2020-12-22 08:31:29,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:29,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:29,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:29,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:29,702 INFO L87 Difference]: Start difference. First operand 19181 states and 29233 transitions. Second operand 3 states. [2020-12-22 08:31:31,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:31,549 INFO L93 Difference]: Finished difference Result 44044 states and 67103 transitions. [2020-12-22 08:31:31,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:31,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-12-22 08:31:31,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:31,629 INFO L225 Difference]: With dead ends: 44044 [2020-12-22 08:31:31,630 INFO L226 Difference]: Without dead ends: 31182 [2020-12-22 08:31:31,657 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 08:31:31,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31182 states. [2020-12-22 08:31:33,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31182 to 31180. [2020-12-22 08:31:33,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31180 states. [2020-12-22 08:31:33,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31180 states to 31180 states and 47165 transitions. [2020-12-22 08:31:33,497 INFO L78 Accepts]: Start accepts. Automaton has 31180 states and 47165 transitions. Word has length 122 [2020-12-22 08:31:33,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:33,498 INFO L481 AbstractCegarLoop]: Abstraction has 31180 states and 47165 transitions. [2020-12-22 08:31:33,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:33,498 INFO L276 IsEmpty]: Start isEmpty. Operand 31180 states and 47165 transitions. [2020-12-22 08:31:33,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 08:31:33,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:33,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:33,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:31:33,585 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:33,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:33,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1542203229, now seen corresponding path program 1 times [2020-12-22 08:31:33,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:33,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361177429] [2020-12-22 08:31:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:33,707 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 08:31:33,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361177429] [2020-12-22 08:31:33,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:33,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:33,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308554935] [2020-12-22 08:31:33,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:33,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:33,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:33,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:33,710 INFO L87 Difference]: Start difference. First operand 31180 states and 47165 transitions. Second operand 3 states. [2020-12-22 08:31:35,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:35,680 INFO L93 Difference]: Finished difference Result 63224 states and 95451 transitions. [2020-12-22 08:31:35,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:35,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-12-22 08:31:35,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:35,819 INFO L225 Difference]: With dead ends: 63224 [2020-12-22 08:31:35,819 INFO L226 Difference]: Without dead ends: 46710 [2020-12-22 08:31:35,869 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 08:31:35,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46710 states. [2020-12-22 08:31:38,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46710 to 46708. [2020-12-22 08:31:38,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46708 states. [2020-12-22 08:31:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46708 states to 46708 states and 70009 transitions. [2020-12-22 08:31:38,182 INFO L78 Accepts]: Start accepts. Automaton has 46708 states and 70009 transitions. Word has length 122 [2020-12-22 08:31:38,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:38,183 INFO L481 AbstractCegarLoop]: Abstraction has 46708 states and 70009 transitions. [2020-12-22 08:31:38,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 46708 states and 70009 transitions. [2020-12-22 08:31:38,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 08:31:38,245 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:38,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:38,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:31:38,246 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:38,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:38,246 INFO L82 PathProgramCache]: Analyzing trace with hash 893236855, now seen corresponding path program 1 times [2020-12-22 08:31:38,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:38,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166060068] [2020-12-22 08:31:38,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:38,362 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 08:31:38,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166060068] [2020-12-22 08:31:38,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:38,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:38,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403784171] [2020-12-22 08:31:38,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:38,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:38,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:38,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:38,365 INFO L87 Difference]: Start difference. First operand 46708 states and 70009 transitions. Second operand 3 states. [2020-12-22 08:31:40,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:40,596 INFO L93 Difference]: Finished difference Result 77068 states and 114787 transitions. [2020-12-22 08:31:40,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:40,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-12-22 08:31:40,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:40,763 INFO L225 Difference]: With dead ends: 77068 [2020-12-22 08:31:40,764 INFO L226 Difference]: Without dead ends: 61578 [2020-12-22 08:31:40,804 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 08:31:40,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61578 states. [2020-12-22 08:31:43,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61578 to 61576. [2020-12-22 08:31:43,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61576 states. [2020-12-22 08:31:43,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61576 states to 61576 states and 91105 transitions. [2020-12-22 08:31:43,641 INFO L78 Accepts]: Start accepts. Automaton has 61576 states and 91105 transitions. Word has length 122 [2020-12-22 08:31:43,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:43,641 INFO L481 AbstractCegarLoop]: Abstraction has 61576 states and 91105 transitions. [2020-12-22 08:31:43,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:43,642 INFO L276 IsEmpty]: Start isEmpty. Operand 61576 states and 91105 transitions. [2020-12-22 08:31:43,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-22 08:31:43,735 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:43,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:43,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:31:43,736 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:43,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:43,737 INFO L82 PathProgramCache]: Analyzing trace with hash -2091528308, now seen corresponding path program 1 times [2020-12-22 08:31:43,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:43,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207075376] [2020-12-22 08:31:43,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:44,086 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 08:31:44,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207075376] [2020-12-22 08:31:44,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:44,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:31:44,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316108564] [2020-12-22 08:31:44,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:31:44,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:44,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:31:44,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:31:44,089 INFO L87 Difference]: Start difference. First operand 61576 states and 91105 transitions. Second operand 6 states. [2020-12-22 08:31:51,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:51,018 INFO L93 Difference]: Finished difference Result 214771 states and 316532 transitions. [2020-12-22 08:31:51,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:31:51,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-12-22 08:31:51,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:51,495 INFO L225 Difference]: With dead ends: 214771 [2020-12-22 08:31:51,496 INFO L226 Difference]: Without dead ends: 153239 [2020-12-22 08:31:51,616 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 08:31:51,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153239 states. [2020-12-22 08:31:58,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153239 to 132323. [2020-12-22 08:31:58,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132323 states. [2020-12-22 08:31:58,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132323 states to 132323 states and 194466 transitions. [2020-12-22 08:31:58,663 INFO L78 Accepts]: Start accepts. Automaton has 132323 states and 194466 transitions. Word has length 124 [2020-12-22 08:31:58,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:58,663 INFO L481 AbstractCegarLoop]: Abstraction has 132323 states and 194466 transitions. [2020-12-22 08:31:58,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:31:58,663 INFO L276 IsEmpty]: Start isEmpty. Operand 132323 states and 194466 transitions. [2020-12-22 08:31:58,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-22 08:31:58,832 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:58,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:58,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:31:58,833 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:58,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:58,833 INFO L82 PathProgramCache]: Analyzing trace with hash 790516460, now seen corresponding path program 1 times [2020-12-22 08:31:58,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:58,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250715602] [2020-12-22 08:31:58,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:59,263 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-12-22 08:31:59,312 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 08:31:59,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250715602] [2020-12-22 08:31:59,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:59,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:31:59,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241922758] [2020-12-22 08:31:59,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:31:59,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:59,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:31:59,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:59,315 INFO L87 Difference]: Start difference. First operand 132323 states and 194466 transitions. Second operand 7 states. [2020-12-22 08:32:19,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:19,590 INFO L93 Difference]: Finished difference Result 551924 states and 807212 transitions. [2020-12-22 08:32:19,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:32:19,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-12-22 08:32:19,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:20,465 INFO L225 Difference]: With dead ends: 551924 [2020-12-22 08:32:20,465 INFO L226 Difference]: Without dead ends: 420189 [2020-12-22 08:32:20,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:32:21,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420189 states. [2020-12-22 08:32:37,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420189 to 254189. [2020-12-22 08:32:37,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254189 states. [2020-12-22 08:32:38,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254189 states to 254189 states and 365086 transitions. [2020-12-22 08:32:38,319 INFO L78 Accepts]: Start accepts. Automaton has 254189 states and 365086 transitions. Word has length 124 [2020-12-22 08:32:38,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:38,320 INFO L481 AbstractCegarLoop]: Abstraction has 254189 states and 365086 transitions. [2020-12-22 08:32:38,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:32:38,320 INFO L276 IsEmpty]: Start isEmpty. Operand 254189 states and 365086 transitions. [2020-12-22 08:32:38,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 08:32:38,622 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:38,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:38,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:32:38,623 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:38,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:38,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1408195571, now seen corresponding path program 1 times [2020-12-22 08:32:38,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:38,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496543847] [2020-12-22 08:32:38,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:38,711 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 08:32:38,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496543847] [2020-12-22 08:32:38,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:38,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:38,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141665065] [2020-12-22 08:32:38,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:38,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:38,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:38,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:38,713 INFO L87 Difference]: Start difference. First operand 254189 states and 365086 transitions. Second operand 3 states. [2020-12-22 08:32:52,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:52,428 INFO L93 Difference]: Finished difference Result 463921 states and 666272 transitions. [2020-12-22 08:32:52,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:52,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-12-22 08:32:52,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:52,876 INFO L225 Difference]: With dead ends: 463921 [2020-12-22 08:32:52,876 INFO L226 Difference]: Without dead ends: 240214 [2020-12-22 08:32:53,065 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 08:32:53,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240214 states. [2020-12-22 08:33:07,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240214 to 240212. [2020-12-22 08:33:07,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240212 states. [2020-12-22 08:33:08,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240212 states to 240212 states and 342562 transitions. [2020-12-22 08:33:08,055 INFO L78 Accepts]: Start accepts. Automaton has 240212 states and 342562 transitions. Word has length 127 [2020-12-22 08:33:08,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:08,055 INFO L481 AbstractCegarLoop]: Abstraction has 240212 states and 342562 transitions. [2020-12-22 08:33:08,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:33:08,055 INFO L276 IsEmpty]: Start isEmpty. Operand 240212 states and 342562 transitions. [2020-12-22 08:33:08,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 08:33:08,222 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:08,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:08,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:33:08,222 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:08,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:08,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1680642543, now seen corresponding path program 1 times [2020-12-22 08:33:08,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:08,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049765947] [2020-12-22 08:33:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:08,307 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 08:33:08,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049765947] [2020-12-22 08:33:08,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:08,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:33:08,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947393249] [2020-12-22 08:33:08,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:33:08,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:08,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:33:08,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:08,310 INFO L87 Difference]: Start difference. First operand 240212 states and 342562 transitions. Second operand 3 states. [2020-12-22 08:33:16,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:16,413 INFO L93 Difference]: Finished difference Result 345080 states and 491924 transitions. [2020-12-22 08:33:16,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:33:16,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-12-22 08:33:16,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:16,640 INFO L225 Difference]: With dead ends: 345080 [2020-12-22 08:33:16,640 INFO L226 Difference]: Without dead ends: 121472 [2020-12-22 08:33:16,775 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 08:33:16,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121472 states. [2020-12-22 08:33:25,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121472 to 121470. [2020-12-22 08:33:25,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121470 states. [2020-12-22 08:33:26,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121470 states to 121470 states and 171992 transitions. [2020-12-22 08:33:26,322 INFO L78 Accepts]: Start accepts. Automaton has 121470 states and 171992 transitions. Word has length 127 [2020-12-22 08:33:26,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:26,322 INFO L481 AbstractCegarLoop]: Abstraction has 121470 states and 171992 transitions. [2020-12-22 08:33:26,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:33:26,322 INFO L276 IsEmpty]: Start isEmpty. Operand 121470 states and 171992 transitions. [2020-12-22 08:33:26,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 08:33:26,403 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:26,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:26,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:33:26,404 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:26,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:26,405 INFO L82 PathProgramCache]: Analyzing trace with hash -44063175, now seen corresponding path program 1 times [2020-12-22 08:33:26,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:26,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128740262] [2020-12-22 08:33:26,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:26,480 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 08:33:26,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128740262] [2020-12-22 08:33:26,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:26,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:33:26,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602319987] [2020-12-22 08:33:26,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:33:26,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:26,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:33:26,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:26,483 INFO L87 Difference]: Start difference. First operand 121470 states and 171992 transitions. Second operand 3 states. [2020-12-22 08:33:30,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:30,469 INFO L93 Difference]: Finished difference Result 173906 states and 246058 transitions. [2020-12-22 08:33:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:33:30,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-12-22 08:33:30,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:30,572 INFO L225 Difference]: With dead ends: 173906 [2020-12-22 08:33:30,572 INFO L226 Difference]: Without dead ends: 62218 [2020-12-22 08:33:30,633 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 08:33:30,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62218 states. [2020-12-22 08:33:34,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62218 to 62216. [2020-12-22 08:33:34,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62216 states. [2020-12-22 08:33:34,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62216 states to 62216 states and 87374 transitions. [2020-12-22 08:33:34,554 INFO L78 Accepts]: Start accepts. Automaton has 62216 states and 87374 transitions. Word has length 127 [2020-12-22 08:33:34,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:34,555 INFO L481 AbstractCegarLoop]: Abstraction has 62216 states and 87374 transitions. [2020-12-22 08:33:34,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:33:34,555 INFO L276 IsEmpty]: Start isEmpty. Operand 62216 states and 87374 transitions. [2020-12-22 08:33:34,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 08:33:34,601 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:34,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:34,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:33:34,601 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:34,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:34,602 INFO L82 PathProgramCache]: Analyzing trace with hash 172528685, now seen corresponding path program 1 times [2020-12-22 08:33:34,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:34,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512966848] [2020-12-22 08:33:34,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:34,680 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 08:33:34,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512966848] [2020-12-22 08:33:34,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:34,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:33:34,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835883461] [2020-12-22 08:33:34,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:33:34,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:34,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:33:34,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:34,683 INFO L87 Difference]: Start difference. First operand 62216 states and 87374 transitions. Second operand 3 states. [2020-12-22 08:33:37,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:37,303 INFO L93 Difference]: Finished difference Result 88436 states and 124100 transitions. [2020-12-22 08:33:37,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:33:37,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-12-22 08:33:37,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:37,345 INFO L225 Difference]: With dead ends: 88436 [2020-12-22 08:33:37,345 INFO L226 Difference]: Without dead ends: 33079 [2020-12-22 08:33:37,371 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 08:33:37,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33079 states. [2020-12-22 08:33:39,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33079 to 33077. [2020-12-22 08:33:39,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33077 states. [2020-12-22 08:33:39,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33077 states to 33077 states and 46033 transitions. [2020-12-22 08:33:39,411 INFO L78 Accepts]: Start accepts. Automaton has 33077 states and 46033 transitions. Word has length 127 [2020-12-22 08:33:39,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:39,412 INFO L481 AbstractCegarLoop]: Abstraction has 33077 states and 46033 transitions. [2020-12-22 08:33:39,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:33:39,412 INFO L276 IsEmpty]: Start isEmpty. Operand 33077 states and 46033 transitions. [2020-12-22 08:33:39,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 08:33:39,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:39,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:39,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:33:39,435 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:39,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:39,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1264776567, now seen corresponding path program 1 times [2020-12-22 08:33:39,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:39,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609803541] [2020-12-22 08:33:39,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:39,553 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 08:33:39,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609803541] [2020-12-22 08:33:39,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:39,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:33:39,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687766033] [2020-12-22 08:33:39,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:33:39,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:39,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:33:39,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:33:39,556 INFO L87 Difference]: Start difference. First operand 33077 states and 46033 transitions. Second operand 6 states. [2020-12-22 08:33:43,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:43,778 INFO L93 Difference]: Finished difference Result 60527 states and 83682 transitions. [2020-12-22 08:33:43,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:33:43,779 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2020-12-22 08:33:43,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:43,863 INFO L225 Difference]: With dead ends: 60527 [2020-12-22 08:33:43,864 INFO L226 Difference]: Without dead ends: 60525 [2020-12-22 08:33:43,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:33:43,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60525 states. [2020-12-22 08:33:46,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60525 to 34309. [2020-12-22 08:33:46,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34309 states. [2020-12-22 08:33:46,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34309 states to 34309 states and 47265 transitions. [2020-12-22 08:33:46,584 INFO L78 Accepts]: Start accepts. Automaton has 34309 states and 47265 transitions. Word has length 127 [2020-12-22 08:33:46,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:46,585 INFO L481 AbstractCegarLoop]: Abstraction has 34309 states and 47265 transitions. [2020-12-22 08:33:46,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:33:46,585 INFO L276 IsEmpty]: Start isEmpty. Operand 34309 states and 47265 transitions. [2020-12-22 08:33:46,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 08:33:46,608 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:46,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:46,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:33:46,609 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:46,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:46,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1384750876, now seen corresponding path program 1 times [2020-12-22 08:33:46,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:46,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62238174] [2020-12-22 08:33:46,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:46,758 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 08:33:46,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62238174] [2020-12-22 08:33:46,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:46,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:33:46,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613303556] [2020-12-22 08:33:46,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:33:46,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:46,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:33:46,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:33:46,761 INFO L87 Difference]: Start difference. First operand 34309 states and 47265 transitions. Second operand 7 states. [2020-12-22 08:33:51,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:51,718 INFO L93 Difference]: Finished difference Result 62644 states and 86528 transitions. [2020-12-22 08:33:51,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:33:51,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-12-22 08:33:51,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:51,786 INFO L225 Difference]: With dead ends: 62644 [2020-12-22 08:33:51,786 INFO L226 Difference]: Without dead ends: 56786 [2020-12-22 08:33:51,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:33:51,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56786 states. [2020-12-22 08:33:55,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56786 to 40318. [2020-12-22 08:33:55,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40318 states. [2020-12-22 08:33:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40318 states to 40318 states and 55460 transitions. [2020-12-22 08:33:55,081 INFO L78 Accepts]: Start accepts. Automaton has 40318 states and 55460 transitions. Word has length 128 [2020-12-22 08:33:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:55,081 INFO L481 AbstractCegarLoop]: Abstraction has 40318 states and 55460 transitions. [2020-12-22 08:33:55,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:33:55,082 INFO L276 IsEmpty]: Start isEmpty. Operand 40318 states and 55460 transitions. [2020-12-22 08:33:55,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 08:33:55,104 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:55,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:55,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:33:55,105 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:55,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:55,105 INFO L82 PathProgramCache]: Analyzing trace with hash 563941196, now seen corresponding path program 1 times [2020-12-22 08:33:55,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:55,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752233823] [2020-12-22 08:33:55,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:55,172 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 08:33:55,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752233823] [2020-12-22 08:33:55,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:55,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:33:55,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404912502] [2020-12-22 08:33:55,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:33:55,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:55,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:33:55,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:55,174 INFO L87 Difference]: Start difference. First operand 40318 states and 55460 transitions. Second operand 3 states. [2020-12-22 08:33:59,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:59,883 INFO L93 Difference]: Finished difference Result 99088 states and 134952 transitions. [2020-12-22 08:33:59,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:33:59,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2020-12-22 08:33:59,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:59,964 INFO L225 Difference]: With dead ends: 99088 [2020-12-22 08:33:59,965 INFO L226 Difference]: Without dead ends: 59327 [2020-12-22 08:33:59,994 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 08:34:00,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59327 states. [2020-12-22 08:34:04,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59327 to 57493. [2020-12-22 08:34:04,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57493 states. [2020-12-22 08:34:04,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57493 states to 57493 states and 77878 transitions. [2020-12-22 08:34:04,900 INFO L78 Accepts]: Start accepts. Automaton has 57493 states and 77878 transitions. Word has length 128 [2020-12-22 08:34:04,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:04,900 INFO L481 AbstractCegarLoop]: Abstraction has 57493 states and 77878 transitions. [2020-12-22 08:34:04,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:34:04,900 INFO L276 IsEmpty]: Start isEmpty. Operand 57493 states and 77878 transitions. [2020-12-22 08:34:04,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 08:34:04,942 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:04,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:34:04,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:34:04,943 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:04,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:04,944 INFO L82 PathProgramCache]: Analyzing trace with hash 593600719, now seen corresponding path program 1 times [2020-12-22 08:34:04,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:04,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560548163] [2020-12-22 08:34:04,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:05,051 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 08:34:05,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560548163] [2020-12-22 08:34:05,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:05,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:34:05,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879940470] [2020-12-22 08:34:05,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:34:05,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:05,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:34:05,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:34:05,054 INFO L87 Difference]: Start difference. First operand 57493 states and 77878 transitions. Second operand 6 states. [2020-12-22 08:34:18,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:18,700 INFO L93 Difference]: Finished difference Result 215718 states and 291004 transitions. [2020-12-22 08:34:18,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:34:18,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2020-12-22 08:34:18,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:18,967 INFO L225 Difference]: With dead ends: 215718 [2020-12-22 08:34:18,968 INFO L226 Difference]: Without dead ends: 158291 [2020-12-22 08:34:19,029 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 08:34:19,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158291 states. [2020-12-22 08:34:30,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158291 to 134219. [2020-12-22 08:34:30,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134219 states. [2020-12-22 08:34:31,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134219 states to 134219 states and 180330 transitions. [2020-12-22 08:34:31,171 INFO L78 Accepts]: Start accepts. Automaton has 134219 states and 180330 transitions. Word has length 128 [2020-12-22 08:34:31,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:31,171 INFO L481 AbstractCegarLoop]: Abstraction has 134219 states and 180330 transitions. [2020-12-22 08:34:31,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:34:31,171 INFO L276 IsEmpty]: Start isEmpty. Operand 134219 states and 180330 transitions. [2020-12-22 08:34:31,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 08:34:31,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:31,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:34:31,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:34:31,256 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:31,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:31,256 INFO L82 PathProgramCache]: Analyzing trace with hash 568982681, now seen corresponding path program 1 times [2020-12-22 08:34:31,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:31,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960203616] [2020-12-22 08:34:31,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:31,404 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 08:34:31,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960203616] [2020-12-22 08:34:31,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:31,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:34:31,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486496360] [2020-12-22 08:34:31,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:34:31,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:31,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:34:31,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:34:31,406 INFO L87 Difference]: Start difference. First operand 134219 states and 180330 transitions. Second operand 7 states. [2020-12-22 08:34:50,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:50,624 INFO L93 Difference]: Finished difference Result 230780 states and 310378 transitions. [2020-12-22 08:34:50,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:34:50,628 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-12-22 08:34:50,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:51,156 INFO L225 Difference]: With dead ends: 230780 [2020-12-22 08:34:51,156 INFO L226 Difference]: Without dead ends: 209186 [2020-12-22 08:34:51,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:34:51,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209186 states.