/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.BOUNDED-14.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:36:28,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:36:28,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:36:28,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:36:28,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:36:28,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:36:28,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:36:28,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:36:28,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:36:28,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:36:28,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:36:28,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:36:28,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:36:28,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:36:28,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:36:28,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:36:28,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:36:28,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:36:28,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:36:28,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:36:28,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:36:28,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:36:28,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:36:28,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:36:28,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:36:28,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:36:28,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:36:28,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:36:28,585 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:36:28,641 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:36:28,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:36:28,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:36:28,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:36:28,646 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:36:28,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:36:28,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:36:28,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:36:28,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:36:28,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:36:28,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:36:28,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:36:28,649 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:36:28,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:36:28,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:36:28,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:36:28,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:36:28,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:36:28,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:36:28,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:36:28,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:36:28,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:36:28,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:36:28,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:36:28,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:36:28,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:36:29,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:36:29,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:36:29,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:36:29,108 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:36:29,109 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:36:29,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.BOUNDED-14.pals.c [2020-12-22 07:36:29,195 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2849fb711/ad724d1f9b9741ce9b89e2158ccf80a2/FLAG86ec02bca [2020-12-22 07:36:29,831 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:36:29,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.BOUNDED-14.pals.c [2020-12-22 07:36:29,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2849fb711/ad724d1f9b9741ce9b89e2158ccf80a2/FLAG86ec02bca [2020-12-22 07:36:30,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2849fb711/ad724d1f9b9741ce9b89e2158ccf80a2 [2020-12-22 07:36:30,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:36:30,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:36:30,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:36:30,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:36:30,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:36:30,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:36:30" (1/1) ... [2020-12-22 07:36:30,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dbb90f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:30, skipping insertion in model container [2020-12-22 07:36:30,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:36:30" (1/1) ... [2020-12-22 07:36:30,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:36:30,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:36:30,595 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.BOUNDED-14.pals.c[20056,20069] [2020-12-22 07:36:30,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:36:30,624 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:36:30,722 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.BOUNDED-14.pals.c[20056,20069] [2020-12-22 07:36:30,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:36:30,756 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:36:30,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:30 WrapperNode [2020-12-22 07:36:30,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:36:30,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:36:30,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:36:30,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:36:30,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:30" (1/1) ... [2020-12-22 07:36:30,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:30" (1/1) ... [2020-12-22 07:36:30,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:36:30,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:36:30,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:36:30,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:36:30,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:30" (1/1) ... [2020-12-22 07:36:30,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:30" (1/1) ... [2020-12-22 07:36:30,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:30" (1/1) ... [2020-12-22 07:36:30,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:30" (1/1) ... [2020-12-22 07:36:30,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:30" (1/1) ... [2020-12-22 07:36:30,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:30" (1/1) ... [2020-12-22 07:36:30,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:30" (1/1) ... [2020-12-22 07:36:30,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:36:30,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:36:30,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:36:30,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:36:30,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:36:31,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:36:31,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:36:31,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:36:31,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:36:32,049 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:36:32,049 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2020-12-22 07:36:32,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:36:32 BoogieIcfgContainer [2020-12-22 07:36:32,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:36:32,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:36:32,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:36:32,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:36:32,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:36:30" (1/3) ... [2020-12-22 07:36:32,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a98dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:36:32, skipping insertion in model container [2020-12-22 07:36:32,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:30" (2/3) ... [2020-12-22 07:36:32,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a98dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:36:32, skipping insertion in model container [2020-12-22 07:36:32,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:36:32" (3/3) ... [2020-12-22 07:36:32,060 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c [2020-12-22 07:36:32,066 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:36:32,072 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:36:32,091 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:36:32,120 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:36:32,121 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:36:32,121 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:36:32,121 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:36:32,121 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:36:32,121 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:36:32,121 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:36:32,121 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:36:32,140 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-12-22 07:36:32,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 07:36:32,150 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:32,152 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] [2020-12-22 07:36:32,152 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:32,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:32,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1781508813, now seen corresponding path program 1 times [2020-12-22 07:36:32,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:32,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557678561] [2020-12-22 07:36:32,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:32,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557678561] [2020-12-22 07:36:32,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:32,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:36:32,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88903063] [2020-12-22 07:36:32,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:36:32,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:32,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:36:32,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:36:32,449 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 2 states. [2020-12-22 07:36:32,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:32,507 INFO L93 Difference]: Finished difference Result 201 states and 336 transitions. [2020-12-22 07:36:32,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:36:32,509 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 41 [2020-12-22 07:36:32,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:32,541 INFO L225 Difference]: With dead ends: 201 [2020-12-22 07:36:32,542 INFO L226 Difference]: Without dead ends: 124 [2020-12-22 07:36:32,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:36:32,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-22 07:36:32,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-12-22 07:36:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-22 07:36:32,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 214 transitions. [2020-12-22 07:36:32,615 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 214 transitions. Word has length 41 [2020-12-22 07:36:32,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:32,616 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 214 transitions. [2020-12-22 07:36:32,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:36:32,616 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 214 transitions. [2020-12-22 07:36:32,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 07:36:32,621 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:32,622 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] [2020-12-22 07:36:32,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:36:32,623 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:32,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:32,626 INFO L82 PathProgramCache]: Analyzing trace with hash 2119091697, now seen corresponding path program 1 times [2020-12-22 07:36:32,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:32,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421959994] [2020-12-22 07:36:32,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:32,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:32,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421959994] [2020-12-22 07:36:32,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:32,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:36:32,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949152961] [2020-12-22 07:36:32,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:36:32,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:32,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:36:32,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:36:32,838 INFO L87 Difference]: Start difference. First operand 124 states and 214 transitions. Second operand 5 states. [2020-12-22 07:36:33,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:33,036 INFO L93 Difference]: Finished difference Result 196 states and 326 transitions. [2020-12-22 07:36:33,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:36:33,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-12-22 07:36:33,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:33,039 INFO L225 Difference]: With dead ends: 196 [2020-12-22 07:36:33,039 INFO L226 Difference]: Without dead ends: 124 [2020-12-22 07:36:33,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:36:33,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-22 07:36:33,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-12-22 07:36:33,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-22 07:36:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 164 transitions. [2020-12-22 07:36:33,051 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 164 transitions. Word has length 41 [2020-12-22 07:36:33,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:33,051 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 164 transitions. [2020-12-22 07:36:33,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:36:33,051 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 164 transitions. [2020-12-22 07:36:33,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:36:33,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:33,055 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] [2020-12-22 07:36:33,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:36:33,055 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:33,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:33,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1557003755, now seen corresponding path program 1 times [2020-12-22 07:36:33,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:33,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713830241] [2020-12-22 07:36:33,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:33,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:33,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713830241] [2020-12-22 07:36:33,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:33,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:36:33,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775706325] [2020-12-22 07:36:33,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:36:33,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:33,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:36:33,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:33,291 INFO L87 Difference]: Start difference. First operand 124 states and 164 transitions. Second operand 3 states. [2020-12-22 07:36:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:33,323 INFO L93 Difference]: Finished difference Result 254 states and 370 transitions. [2020-12-22 07:36:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:36:33,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 07:36:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:33,326 INFO L225 Difference]: With dead ends: 254 [2020-12-22 07:36:33,326 INFO L226 Difference]: Without dead ends: 186 [2020-12-22 07:36:33,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:33,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-12-22 07:36:33,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2020-12-22 07:36:33,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-12-22 07:36:33,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 260 transitions. [2020-12-22 07:36:33,344 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 260 transitions. Word has length 90 [2020-12-22 07:36:33,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:33,344 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 260 transitions. [2020-12-22 07:36:33,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:36:33,345 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 260 transitions. [2020-12-22 07:36:33,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:36:33,346 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:33,347 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] [2020-12-22 07:36:33,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:36:33,347 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:33,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:33,348 INFO L82 PathProgramCache]: Analyzing trace with hash -309494901, now seen corresponding path program 1 times [2020-12-22 07:36:33,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:33,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240658684] [2020-12-22 07:36:33,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:33,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:33,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240658684] [2020-12-22 07:36:33,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:33,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:36:33,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851848063] [2020-12-22 07:36:33,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:36:33,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:33,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:36:33,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:33,537 INFO L87 Difference]: Start difference. First operand 184 states and 260 transitions. Second operand 3 states. [2020-12-22 07:36:33,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:33,568 INFO L93 Difference]: Finished difference Result 428 states and 648 transitions. [2020-12-22 07:36:33,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:36:33,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 07:36:33,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:33,572 INFO L225 Difference]: With dead ends: 428 [2020-12-22 07:36:33,572 INFO L226 Difference]: Without dead ends: 300 [2020-12-22 07:36:33,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:33,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-12-22 07:36:33,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 298. [2020-12-22 07:36:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-22 07:36:33,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 441 transitions. [2020-12-22 07:36:33,600 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 441 transitions. Word has length 90 [2020-12-22 07:36:33,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:33,601 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 441 transitions. [2020-12-22 07:36:33,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:36:33,601 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 441 transitions. [2020-12-22 07:36:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:36:33,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:33,603 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] [2020-12-22 07:36:33,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:36:33,604 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:33,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:33,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1050927103, now seen corresponding path program 1 times [2020-12-22 07:36:33,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:33,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112368141] [2020-12-22 07:36:33,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:33,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112368141] [2020-12-22 07:36:33,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:33,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:36:33,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665492411] [2020-12-22 07:36:33,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:36:33,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:33,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:36:33,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:33,707 INFO L87 Difference]: Start difference. First operand 298 states and 441 transitions. Second operand 3 states. [2020-12-22 07:36:33,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:33,772 INFO L93 Difference]: Finished difference Result 758 states and 1171 transitions. [2020-12-22 07:36:33,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:36:33,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 07:36:33,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:33,777 INFO L225 Difference]: With dead ends: 758 [2020-12-22 07:36:33,777 INFO L226 Difference]: Without dead ends: 516 [2020-12-22 07:36:33,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:33,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-12-22 07:36:33,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 514. [2020-12-22 07:36:33,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-12-22 07:36:33,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 781 transitions. [2020-12-22 07:36:33,844 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 781 transitions. Word has length 90 [2020-12-22 07:36:33,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:33,845 INFO L481 AbstractCegarLoop]: Abstraction has 514 states and 781 transitions. [2020-12-22 07:36:33,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:36:33,845 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 781 transitions. [2020-12-22 07:36:33,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:36:33,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:33,847 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] [2020-12-22 07:36:33,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:36:33,848 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:33,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:33,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1796509833, now seen corresponding path program 1 times [2020-12-22 07:36:33,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:33,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402682701] [2020-12-22 07:36:33,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:33,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:33,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402682701] [2020-12-22 07:36:33,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:33,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:36:33,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100070677] [2020-12-22 07:36:33,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:36:33,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:33,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:36:33,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:33,976 INFO L87 Difference]: Start difference. First operand 514 states and 781 transitions. Second operand 3 states. [2020-12-22 07:36:34,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:34,021 INFO L93 Difference]: Finished difference Result 1382 states and 2151 transitions. [2020-12-22 07:36:34,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:36:34,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 07:36:34,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:34,028 INFO L225 Difference]: With dead ends: 1382 [2020-12-22 07:36:34,029 INFO L226 Difference]: Without dead ends: 924 [2020-12-22 07:36:34,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:34,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-12-22 07:36:34,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 922. [2020-12-22 07:36:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2020-12-22 07:36:34,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1417 transitions. [2020-12-22 07:36:34,069 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1417 transitions. Word has length 90 [2020-12-22 07:36:34,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:34,070 INFO L481 AbstractCegarLoop]: Abstraction has 922 states and 1417 transitions. [2020-12-22 07:36:34,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:36:34,070 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1417 transitions. [2020-12-22 07:36:34,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:36:34,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:34,071 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] [2020-12-22 07:36:34,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:36:34,072 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:34,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:34,072 INFO L82 PathProgramCache]: Analyzing trace with hash -259221845, now seen corresponding path program 1 times [2020-12-22 07:36:34,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:34,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143304494] [2020-12-22 07:36:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:34,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143304494] [2020-12-22 07:36:34,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:34,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:36:34,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196676829] [2020-12-22 07:36:34,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:36:34,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:34,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:36:34,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:34,158 INFO L87 Difference]: Start difference. First operand 922 states and 1417 transitions. Second operand 3 states. [2020-12-22 07:36:34,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:34,221 INFO L93 Difference]: Finished difference Result 2558 states and 3979 transitions. [2020-12-22 07:36:34,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:36:34,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 07:36:34,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:34,231 INFO L225 Difference]: With dead ends: 2558 [2020-12-22 07:36:34,232 INFO L226 Difference]: Without dead ends: 1692 [2020-12-22 07:36:34,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:34,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2020-12-22 07:36:34,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1690. [2020-12-22 07:36:34,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-12-22 07:36:34,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2601 transitions. [2020-12-22 07:36:34,304 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2601 transitions. Word has length 90 [2020-12-22 07:36:34,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:34,305 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 2601 transitions. [2020-12-22 07:36:34,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:36:34,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2601 transitions. [2020-12-22 07:36:34,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:36:34,306 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:34,306 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] [2020-12-22 07:36:34,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:36:34,307 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:34,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:34,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1420392415, now seen corresponding path program 1 times [2020-12-22 07:36:34,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:34,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746705867] [2020-12-22 07:36:34,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:34,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:34,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746705867] [2020-12-22 07:36:34,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:34,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:36:34,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514803125] [2020-12-22 07:36:34,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:36:34,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:34,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:36:34,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:34,396 INFO L87 Difference]: Start difference. First operand 1690 states and 2601 transitions. Second operand 3 states. [2020-12-22 07:36:34,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:34,506 INFO L93 Difference]: Finished difference Result 4766 states and 7371 transitions. [2020-12-22 07:36:34,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:36:34,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 07:36:34,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:34,526 INFO L225 Difference]: With dead ends: 4766 [2020-12-22 07:36:34,526 INFO L226 Difference]: Without dead ends: 3132 [2020-12-22 07:36:34,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2020-12-22 07:36:34,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3130. [2020-12-22 07:36:34,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3130 states. [2020-12-22 07:36:34,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3130 states to 3130 states and 4793 transitions. [2020-12-22 07:36:34,683 INFO L78 Accepts]: Start accepts. Automaton has 3130 states and 4793 transitions. Word has length 90 [2020-12-22 07:36:34,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:34,683 INFO L481 AbstractCegarLoop]: Abstraction has 3130 states and 4793 transitions. [2020-12-22 07:36:34,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:36:34,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3130 states and 4793 transitions. [2020-12-22 07:36:34,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:36:34,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:34,684 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] [2020-12-22 07:36:34,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:36:34,685 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:34,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:34,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1758185557, now seen corresponding path program 1 times [2020-12-22 07:36:34,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:34,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053529913] [2020-12-22 07:36:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:34,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053529913] [2020-12-22 07:36:34,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:34,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:36:34,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570478499] [2020-12-22 07:36:34,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:36:34,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:34,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:36:34,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:34,830 INFO L87 Difference]: Start difference. First operand 3130 states and 4793 transitions. Second operand 3 states. [2020-12-22 07:36:35,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:35,078 INFO L93 Difference]: Finished difference Result 8894 states and 13627 transitions. [2020-12-22 07:36:35,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:36:35,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 07:36:35,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:35,114 INFO L225 Difference]: With dead ends: 8894 [2020-12-22 07:36:35,114 INFO L226 Difference]: Without dead ends: 5820 [2020-12-22 07:36:35,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:35,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5820 states. [2020-12-22 07:36:35,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5820 to 5818. [2020-12-22 07:36:35,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5818 states. [2020-12-22 07:36:35,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5818 states to 5818 states and 8825 transitions. [2020-12-22 07:36:35,496 INFO L78 Accepts]: Start accepts. Automaton has 5818 states and 8825 transitions. Word has length 90 [2020-12-22 07:36:35,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:35,496 INFO L481 AbstractCegarLoop]: Abstraction has 5818 states and 8825 transitions. [2020-12-22 07:36:35,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:36:35,497 INFO L276 IsEmpty]: Start isEmpty. Operand 5818 states and 8825 transitions. [2020-12-22 07:36:35,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:36:35,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:35,501 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] [2020-12-22 07:36:35,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:36:35,502 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:35,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:35,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1318796341, now seen corresponding path program 1 times [2020-12-22 07:36:35,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:35,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323037237] [2020-12-22 07:36:35,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:35,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:35,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323037237] [2020-12-22 07:36:35,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:35,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:36:35,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808094452] [2020-12-22 07:36:35,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:36:35,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:35,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:36:35,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:36:35,660 INFO L87 Difference]: Start difference. First operand 5818 states and 8825 transitions. Second operand 6 states. [2020-12-22 07:36:36,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:36,126 INFO L93 Difference]: Finished difference Result 11580 states and 17594 transitions. [2020-12-22 07:36:36,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:36:36,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2020-12-22 07:36:36,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:36,162 INFO L225 Difference]: With dead ends: 11580 [2020-12-22 07:36:36,163 INFO L226 Difference]: Without dead ends: 5818 [2020-12-22 07:36:36,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:36:36,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5818 states. [2020-12-22 07:36:36,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5818 to 5818. [2020-12-22 07:36:36,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5818 states. [2020-12-22 07:36:36,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5818 states to 5818 states and 8761 transitions. [2020-12-22 07:36:36,533 INFO L78 Accepts]: Start accepts. Automaton has 5818 states and 8761 transitions. Word has length 90 [2020-12-22 07:36:36,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:36,534 INFO L481 AbstractCegarLoop]: Abstraction has 5818 states and 8761 transitions. [2020-12-22 07:36:36,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:36:36,534 INFO L276 IsEmpty]: Start isEmpty. Operand 5818 states and 8761 transitions. [2020-12-22 07:36:36,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:36:36,535 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:36,535 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] [2020-12-22 07:36:36,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:36:36,535 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:36,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:36,536 INFO L82 PathProgramCache]: Analyzing trace with hash -297727987, now seen corresponding path program 1 times [2020-12-22 07:36:36,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:36,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524914110] [2020-12-22 07:36:36,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:36,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:36,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524914110] [2020-12-22 07:36:36,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:36,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:36:36,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709547778] [2020-12-22 07:36:36,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:36:36,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:36,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:36:36,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:36:36,640 INFO L87 Difference]: Start difference. First operand 5818 states and 8761 transitions. Second operand 6 states. [2020-12-22 07:36:37,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:37,111 INFO L93 Difference]: Finished difference Result 11580 states and 17466 transitions. [2020-12-22 07:36:37,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:36:37,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2020-12-22 07:36:37,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:37,163 INFO L225 Difference]: With dead ends: 11580 [2020-12-22 07:36:37,163 INFO L226 Difference]: Without dead ends: 5818 [2020-12-22 07:36:37,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:36:37,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5818 states. [2020-12-22 07:36:37,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5818 to 5818. [2020-12-22 07:36:37,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5818 states. [2020-12-22 07:36:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5818 states to 5818 states and 8697 transitions. [2020-12-22 07:36:37,584 INFO L78 Accepts]: Start accepts. Automaton has 5818 states and 8697 transitions. Word has length 90 [2020-12-22 07:36:37,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:37,584 INFO L481 AbstractCegarLoop]: Abstraction has 5818 states and 8697 transitions. [2020-12-22 07:36:37,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:36:37,584 INFO L276 IsEmpty]: Start isEmpty. Operand 5818 states and 8697 transitions. [2020-12-22 07:36:37,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:36:37,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:37,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:36:37,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:36:37,587 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:37,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:37,588 INFO L82 PathProgramCache]: Analyzing trace with hash 519920463, now seen corresponding path program 1 times [2020-12-22 07:36:37,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:37,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760871113] [2020-12-22 07:36:37,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:37,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760871113] [2020-12-22 07:36:37,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:37,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:36:37,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35002206] [2020-12-22 07:36:37,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:36:37,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:37,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:36:37,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:36:37,785 INFO L87 Difference]: Start difference. First operand 5818 states and 8697 transitions. Second operand 9 states. [2020-12-22 07:36:41,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:41,420 INFO L93 Difference]: Finished difference Result 86486 states and 129671 transitions. [2020-12-22 07:36:41,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 07:36:41,421 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-12-22 07:36:41,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:41,623 INFO L225 Difference]: With dead ends: 86486 [2020-12-22 07:36:41,623 INFO L226 Difference]: Without dead ends: 80724 [2020-12-22 07:36:41,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:36:41,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80724 states. [2020-12-22 07:36:43,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80724 to 11578. [2020-12-22 07:36:43,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11578 states. [2020-12-22 07:36:43,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 17081 transitions. [2020-12-22 07:36:43,578 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 17081 transitions. Word has length 90 [2020-12-22 07:36:43,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:43,578 INFO L481 AbstractCegarLoop]: Abstraction has 11578 states and 17081 transitions. [2020-12-22 07:36:43,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:36:43,578 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 17081 transitions. [2020-12-22 07:36:43,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 07:36:43,579 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:43,579 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] [2020-12-22 07:36:43,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:36:43,580 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:43,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:43,581 INFO L82 PathProgramCache]: Analyzing trace with hash 78162119, now seen corresponding path program 1 times [2020-12-22 07:36:43,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:43,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810014864] [2020-12-22 07:36:43,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:43,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:43,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810014864] [2020-12-22 07:36:43,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:43,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:36:43,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502484042] [2020-12-22 07:36:43,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:36:43,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:43,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:36:43,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:36:43,928 INFO L87 Difference]: Start difference. First operand 11578 states and 17081 transitions. Second operand 9 states. [2020-12-22 07:36:45,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:45,504 INFO L93 Difference]: Finished difference Result 28864 states and 42748 transitions. [2020-12-22 07:36:45,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:36:45,505 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-12-22 07:36:45,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:45,537 INFO L225 Difference]: With dead ends: 28864 [2020-12-22 07:36:45,537 INFO L226 Difference]: Without dead ends: 17342 [2020-12-22 07:36:45,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:36:45,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17342 states. [2020-12-22 07:36:46,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17342 to 11578. [2020-12-22 07:36:46,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11578 states. [2020-12-22 07:36:46,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 16953 transitions. [2020-12-22 07:36:46,410 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 16953 transitions. Word has length 92 [2020-12-22 07:36:46,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:46,410 INFO L481 AbstractCegarLoop]: Abstraction has 11578 states and 16953 transitions. [2020-12-22 07:36:46,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:36:46,411 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 16953 transitions. [2020-12-22 07:36:46,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 07:36:46,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:46,412 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] [2020-12-22 07:36:46,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:36:46,412 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:46,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:46,413 INFO L82 PathProgramCache]: Analyzing trace with hash 11668607, now seen corresponding path program 1 times [2020-12-22 07:36:46,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:46,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12105524] [2020-12-22 07:36:46,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:46,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12105524] [2020-12-22 07:36:46,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:46,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:36:46,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334603495] [2020-12-22 07:36:46,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:36:46,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:46,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:36:46,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:46,467 INFO L87 Difference]: Start difference. First operand 11578 states and 16953 transitions. Second operand 3 states. [2020-12-22 07:36:47,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:47,441 INFO L93 Difference]: Finished difference Result 29246 states and 42619 transitions. [2020-12-22 07:36:47,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:36:47,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-22 07:36:47,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:47,472 INFO L225 Difference]: With dead ends: 29246 [2020-12-22 07:36:47,472 INFO L226 Difference]: Without dead ends: 17724 [2020-12-22 07:36:47,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:47,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17724 states. [2020-12-22 07:36:48,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17724 to 17722. [2020-12-22 07:36:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17722 states. [2020-12-22 07:36:48,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17722 states to 17722 states and 25337 transitions. [2020-12-22 07:36:48,917 INFO L78 Accepts]: Start accepts. Automaton has 17722 states and 25337 transitions. Word has length 92 [2020-12-22 07:36:48,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:48,917 INFO L481 AbstractCegarLoop]: Abstraction has 17722 states and 25337 transitions. [2020-12-22 07:36:48,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:36:48,917 INFO L276 IsEmpty]: Start isEmpty. Operand 17722 states and 25337 transitions. [2020-12-22 07:36:48,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 07:36:48,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:48,919 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] [2020-12-22 07:36:48,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:36:48,919 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:48,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:48,920 INFO L82 PathProgramCache]: Analyzing trace with hash 2008302822, now seen corresponding path program 1 times [2020-12-22 07:36:48,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:48,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305678546] [2020-12-22 07:36:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:49,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305678546] [2020-12-22 07:36:49,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:49,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 07:36:49,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283492532] [2020-12-22 07:36:49,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:36:49,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:49,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:36:49,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:36:49,053 INFO L87 Difference]: Start difference. First operand 17722 states and 25337 transitions. Second operand 8 states. [2020-12-22 07:36:51,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:51,524 INFO L93 Difference]: Finished difference Result 29151 states and 41457 transitions. [2020-12-22 07:36:51,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:36:51,524 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-12-22 07:36:51,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:51,569 INFO L225 Difference]: With dead ends: 29151 [2020-12-22 07:36:51,570 INFO L226 Difference]: Without dead ends: 29149 [2020-12-22 07:36:51,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:36:51,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29149 states. [2020-12-22 07:36:52,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29149 to 18106. [2020-12-22 07:36:52,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18106 states. [2020-12-22 07:36:53,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18106 states to 18106 states and 25593 transitions. [2020-12-22 07:36:53,023 INFO L78 Accepts]: Start accepts. Automaton has 18106 states and 25593 transitions. Word has length 93 [2020-12-22 07:36:53,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:53,024 INFO L481 AbstractCegarLoop]: Abstraction has 18106 states and 25593 transitions. [2020-12-22 07:36:53,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:36:53,024 INFO L276 IsEmpty]: Start isEmpty. Operand 18106 states and 25593 transitions. [2020-12-22 07:36:53,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 07:36:53,025 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:53,025 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] [2020-12-22 07:36:53,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:36:53,025 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:53,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:53,028 INFO L82 PathProgramCache]: Analyzing trace with hash 411535013, now seen corresponding path program 1 times [2020-12-22 07:36:53,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:53,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928337684] [2020-12-22 07:36:53,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:53,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:53,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928337684] [2020-12-22 07:36:53,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:53,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:36:53,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686617515] [2020-12-22 07:36:53,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:36:53,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:53,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:36:53,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:53,094 INFO L87 Difference]: Start difference. First operand 18106 states and 25593 transitions. Second operand 3 states. [2020-12-22 07:36:55,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:55,126 INFO L93 Difference]: Finished difference Result 41600 states and 59005 transitions. [2020-12-22 07:36:55,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:36:55,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-22 07:36:55,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:55,148 INFO L225 Difference]: With dead ends: 41600 [2020-12-22 07:36:55,148 INFO L226 Difference]: Without dead ends: 23550 [2020-12-22 07:36:55,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:55,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23550 states. [2020-12-22 07:36:56,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23550 to 23548. [2020-12-22 07:36:56,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23548 states. [2020-12-22 07:36:56,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23548 states to 23548 states and 33275 transitions. [2020-12-22 07:36:56,895 INFO L78 Accepts]: Start accepts. Automaton has 23548 states and 33275 transitions. Word has length 93 [2020-12-22 07:36:56,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:56,896 INFO L481 AbstractCegarLoop]: Abstraction has 23548 states and 33275 transitions. [2020-12-22 07:36:56,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:36:56,896 INFO L276 IsEmpty]: Start isEmpty. Operand 23548 states and 33275 transitions. [2020-12-22 07:36:56,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 07:36:56,907 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:56,908 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:36:56,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:36:56,908 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:56,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:56,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1787662099, now seen corresponding path program 1 times [2020-12-22 07:36:56,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:56,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497101304] [2020-12-22 07:36:56,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 07:36:57,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497101304] [2020-12-22 07:36:57,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:57,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:36:57,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360817803] [2020-12-22 07:36:57,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:36:57,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:57,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:36:57,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:36:57,088 INFO L87 Difference]: Start difference. First operand 23548 states and 33275 transitions. Second operand 9 states. [2020-12-22 07:37:08,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:37:08,063 INFO L93 Difference]: Finished difference Result 194188 states and 274307 transitions. [2020-12-22 07:37:08,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:37:08,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 07:37:08,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:37:08,298 INFO L225 Difference]: With dead ends: 194188 [2020-12-22 07:37:08,299 INFO L226 Difference]: Without dead ends: 170698 [2020-12-22 07:37:08,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:37:08,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170698 states. [2020-12-22 07:37:12,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170698 to 47036. [2020-12-22 07:37:12,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47036 states. [2020-12-22 07:37:12,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47036 states to 47036 states and 66235 transitions. [2020-12-22 07:37:12,974 INFO L78 Accepts]: Start accepts. Automaton has 47036 states and 66235 transitions. Word has length 129 [2020-12-22 07:37:12,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:37:12,974 INFO L481 AbstractCegarLoop]: Abstraction has 47036 states and 66235 transitions. [2020-12-22 07:37:12,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:37:12,974 INFO L276 IsEmpty]: Start isEmpty. Operand 47036 states and 66235 transitions. [2020-12-22 07:37:12,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 07:37:12,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:37:12,991 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:37:12,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:37:12,991 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:37:12,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:37:12,992 INFO L82 PathProgramCache]: Analyzing trace with hash 18879283, now seen corresponding path program 1 times [2020-12-22 07:37:12,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:37:12,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656100192] [2020-12-22 07:37:12,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:37:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:37:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 07:37:13,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656100192] [2020-12-22 07:37:13,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:37:13,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:37:13,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901147346] [2020-12-22 07:37:13,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:37:13,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:37:13,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:37:13,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:37:13,363 INFO L87 Difference]: Start difference. First operand 47036 states and 66235 transitions. Second operand 9 states. [2020-12-22 07:37:26,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:37:26,467 INFO L93 Difference]: Finished difference Result 217676 states and 307267 transitions. [2020-12-22 07:37:26,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:37:26,468 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 07:37:26,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:37:27,046 INFO L225 Difference]: With dead ends: 217676 [2020-12-22 07:37:27,046 INFO L226 Difference]: Without dead ends: 194186 [2020-12-22 07:37:27,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:37:27,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194186 states. [2020-12-22 07:37:34,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194186 to 82172. [2020-12-22 07:37:34,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82172 states. [2020-12-22 07:37:34,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82172 states to 82172 states and 115387 transitions. [2020-12-22 07:37:34,549 INFO L78 Accepts]: Start accepts. Automaton has 82172 states and 115387 transitions. Word has length 129 [2020-12-22 07:37:34,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:37:34,550 INFO L481 AbstractCegarLoop]: Abstraction has 82172 states and 115387 transitions. [2020-12-22 07:37:34,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:37:34,550 INFO L276 IsEmpty]: Start isEmpty. Operand 82172 states and 115387 transitions. [2020-12-22 07:37:34,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 07:37:34,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:37:34,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:37:34,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:37:34,565 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:37:34,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:37:34,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1150519123, now seen corresponding path program 1 times [2020-12-22 07:37:34,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:37:34,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448635791] [2020-12-22 07:37:34,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:37:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:37:34,734 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 07:37:34,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448635791] [2020-12-22 07:37:34,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:37:34,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:37:34,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811530777] [2020-12-22 07:37:34,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:37:34,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:37:34,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:37:34,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:37:34,736 INFO L87 Difference]: Start difference. First operand 82172 states and 115387 transitions. Second operand 9 states. [2020-12-22 07:37:50,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:37:50,749 INFO L93 Difference]: Finished difference Result 241164 states and 340227 transitions. [2020-12-22 07:37:50,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:37:50,750 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 07:37:50,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:37:51,263 INFO L225 Difference]: With dead ends: 241164 [2020-12-22 07:37:51,263 INFO L226 Difference]: Without dead ends: 217674 [2020-12-22 07:37:51,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:37:51,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217674 states. [2020-12-22 07:38:00,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217674 to 105660. [2020-12-22 07:38:00,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105660 states. [2020-12-22 07:38:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105660 states to 105660 states and 148347 transitions. [2020-12-22 07:38:01,010 INFO L78 Accepts]: Start accepts. Automaton has 105660 states and 148347 transitions. Word has length 129 [2020-12-22 07:38:01,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:01,010 INFO L481 AbstractCegarLoop]: Abstraction has 105660 states and 148347 transitions. [2020-12-22 07:38:01,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:38:01,011 INFO L276 IsEmpty]: Start isEmpty. Operand 105660 states and 148347 transitions. [2020-12-22 07:38:01,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 07:38:01,025 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:01,026 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:01,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 07:38:01,026 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:01,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:01,027 INFO L82 PathProgramCache]: Analyzing trace with hash -84939917, now seen corresponding path program 1 times [2020-12-22 07:38:01,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:01,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966525310] [2020-12-22 07:38:01,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 07:38:01,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966525310] [2020-12-22 07:38:01,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:01,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:38:01,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867326697] [2020-12-22 07:38:01,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:38:01,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:01,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:38:01,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:38:01,231 INFO L87 Difference]: Start difference. First operand 105660 states and 148347 transitions. Second operand 9 states. [2020-12-22 07:38:20,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:20,757 INFO L93 Difference]: Finished difference Result 264652 states and 373187 transitions. [2020-12-22 07:38:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:38:20,757 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 07:38:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:21,302 INFO L225 Difference]: With dead ends: 264652 [2020-12-22 07:38:21,302 INFO L226 Difference]: Without dead ends: 241162 [2020-12-22 07:38:21,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:38:21,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241162 states. [2020-12-22 07:38:33,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241162 to 129148. [2020-12-22 07:38:33,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129148 states. [2020-12-22 07:38:33,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129148 states to 129148 states and 181307 transitions. [2020-12-22 07:38:33,673 INFO L78 Accepts]: Start accepts. Automaton has 129148 states and 181307 transitions. Word has length 129 [2020-12-22 07:38:33,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:33,674 INFO L481 AbstractCegarLoop]: Abstraction has 129148 states and 181307 transitions. [2020-12-22 07:38:33,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:38:33,674 INFO L276 IsEmpty]: Start isEmpty. Operand 129148 states and 181307 transitions. [2020-12-22 07:38:33,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 07:38:33,687 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:33,688 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:33,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 07:38:33,688 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:33,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:33,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1505935469, now seen corresponding path program 1 times [2020-12-22 07:38:33,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:33,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736110846] [2020-12-22 07:38:33,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 07:38:34,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736110846] [2020-12-22 07:38:34,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:34,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:38:34,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120214070] [2020-12-22 07:38:34,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:38:34,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:34,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:38:34,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:38:34,122 INFO L87 Difference]: Start difference. First operand 129148 states and 181307 transitions. Second operand 9 states. [2020-12-22 07:38:57,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:57,420 INFO L93 Difference]: Finished difference Result 288140 states and 406147 transitions. [2020-12-22 07:38:57,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:38:57,421 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 07:38:57,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:57,864 INFO L225 Difference]: With dead ends: 288140 [2020-12-22 07:38:57,864 INFO L226 Difference]: Without dead ends: 264650 [2020-12-22 07:38:57,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:38:58,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264650 states. [2020-12-22 07:39:13,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264650 to 152636. [2020-12-22 07:39:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152636 states. [2020-12-22 07:39:13,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152636 states to 152636 states and 214267 transitions. [2020-12-22 07:39:13,645 INFO L78 Accepts]: Start accepts. Automaton has 152636 states and 214267 transitions. Word has length 129 [2020-12-22 07:39:13,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:39:13,645 INFO L481 AbstractCegarLoop]: Abstraction has 152636 states and 214267 transitions. [2020-12-22 07:39:13,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:39:13,646 INFO L276 IsEmpty]: Start isEmpty. Operand 152636 states and 214267 transitions. [2020-12-22 07:39:13,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 07:39:13,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:39:13,668 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:39:13,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 07:39:13,668 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:39:13,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:39:13,669 INFO L82 PathProgramCache]: Analyzing trace with hash -2071755853, now seen corresponding path program 1 times [2020-12-22 07:39:13,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:39:13,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83294413] [2020-12-22 07:39:13,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:39:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:39:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 07:39:13,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83294413] [2020-12-22 07:39:13,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:39:13,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:39:13,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273198349] [2020-12-22 07:39:13,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:39:13,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:39:13,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:39:13,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:39:13,835 INFO L87 Difference]: Start difference. First operand 152636 states and 214267 transitions. Second operand 9 states.