/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:04:04,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:04:04,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:04:04,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:04:04,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:04:04,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:04:04,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:04:04,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:04:04,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:04:04,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:04:04,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:04:04,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:04:04,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:04:04,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:04:04,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:04:04,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:04:04,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:04:04,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:04:04,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:04:04,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:04:04,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:04:04,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:04:04,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:04:04,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:04:04,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:04:04,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:04:04,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:04:04,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:04:04,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:04:04,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:04:04,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:04:04,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:04:04,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:04:04,637 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:04:04,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:04:04,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:04:04,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:04:04,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:04:04,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:04:04,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:04:04,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:04:04,639 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:04:04,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:04:04,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:04:04,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:04:04,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:04:04,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:04:04,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:04:04,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:04:04,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:04:04,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:04:04,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:04:04,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:04:04,641 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:04:04,641 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:04:04,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:04:05,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:04:05,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:04:05,035 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:04:05,036 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:04:05,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 09:04:05,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66fd409d4/a2667c93eabb4fe9b07f0eba66cfe4cf/FLAG19ad64a0b [2020-12-22 09:04:05,758 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:04:05,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 09:04:05,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66fd409d4/a2667c93eabb4fe9b07f0eba66cfe4cf/FLAG19ad64a0b [2020-12-22 09:04:06,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66fd409d4/a2667c93eabb4fe9b07f0eba66cfe4cf [2020-12-22 09:04:06,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:04:06,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:04:06,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:04:06,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:04:06,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:04:06,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:04:06" (1/1) ... [2020-12-22 09:04:06,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e29afb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:06, skipping insertion in model container [2020-12-22 09:04:06,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:04:06" (1/1) ... [2020-12-22 09:04:06,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:04:06,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:04:06,450 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7516,7529] [2020-12-22 09:04:06,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:04:06,581 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:04:06,722 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-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7516,7529] [2020-12-22 09:04:06,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:04:06,828 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:04:06,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:06 WrapperNode [2020-12-22 09:04:06,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:04:06,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:04:06,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:04:06,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:04:06,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:06" (1/1) ... [2020-12-22 09:04:06,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:06" (1/1) ... [2020-12-22 09:04:06,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:04:06,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:04:06,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:04:06,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:04:06,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:06" (1/1) ... [2020-12-22 09:04:06,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:06" (1/1) ... [2020-12-22 09:04:06,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:06" (1/1) ... [2020-12-22 09:04:06,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:06" (1/1) ... [2020-12-22 09:04:07,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:06" (1/1) ... [2020-12-22 09:04:07,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:06" (1/1) ... [2020-12-22 09:04:07,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:06" (1/1) ... [2020-12-22 09:04:07,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:04:07,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:04:07,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:04:07,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:04:07,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:06" (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 09:04:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:04:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:04:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:04:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:04:08,153 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:04:08,155 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:04:08,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:04:08 BoogieIcfgContainer [2020-12-22 09:04:08,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:04:08,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:04:08,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:04:08,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:04:08,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:04:06" (1/3) ... [2020-12-22 09:04:08,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e27802c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:04:08, skipping insertion in model container [2020-12-22 09:04:08,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:06" (2/3) ... [2020-12-22 09:04:08,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e27802c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:04:08, skipping insertion in model container [2020-12-22 09:04:08,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:04:08" (3/3) ... [2020-12-22 09:04:08,175 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 09:04:08,183 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:04:08,191 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:04:08,212 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:04:08,262 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:04:08,262 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:04:08,262 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:04:08,262 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:04:08,263 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:04:08,263 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:04:08,263 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:04:08,263 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:04:08,286 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-12-22 09:04:08,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 09:04:08,301 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:08,302 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] [2020-12-22 09:04:08,302 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:08,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:08,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1975649421, now seen corresponding path program 1 times [2020-12-22 09:04:08,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:08,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807325384] [2020-12-22 09:04:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:08,688 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 09:04:08,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807325384] [2020-12-22 09:04:08,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:08,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:08,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527180048] [2020-12-22 09:04:08,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:08,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:08,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:08,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:08,712 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 3 states. [2020-12-22 09:04:08,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:08,846 INFO L93 Difference]: Finished difference Result 329 states and 551 transitions. [2020-12-22 09:04:08,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:08,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-22 09:04:08,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:08,883 INFO L225 Difference]: With dead ends: 329 [2020-12-22 09:04:08,884 INFO L226 Difference]: Without dead ends: 225 [2020-12-22 09:04:08,888 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 09:04:08,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-12-22 09:04:08,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2020-12-22 09:04:08,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-22 09:04:08,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 345 transitions. [2020-12-22 09:04:08,998 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 345 transitions. Word has length 62 [2020-12-22 09:04:08,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:08,999 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 345 transitions. [2020-12-22 09:04:08,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:08,999 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 345 transitions. [2020-12-22 09:04:09,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 09:04:09,003 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:09,003 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] [2020-12-22 09:04:09,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:04:09,004 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:09,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:09,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1826541876, now seen corresponding path program 1 times [2020-12-22 09:04:09,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:09,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227742972] [2020-12-22 09:04:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:09,212 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 09:04:09,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227742972] [2020-12-22 09:04:09,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:09,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:09,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467000369] [2020-12-22 09:04:09,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:09,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:09,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:09,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:09,219 INFO L87 Difference]: Start difference. First operand 222 states and 345 transitions. Second operand 3 states. [2020-12-22 09:04:09,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:09,328 INFO L93 Difference]: Finished difference Result 536 states and 857 transitions. [2020-12-22 09:04:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:09,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 09:04:09,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:09,336 INFO L225 Difference]: With dead ends: 536 [2020-12-22 09:04:09,336 INFO L226 Difference]: Without dead ends: 371 [2020-12-22 09:04:09,342 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 09:04:09,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-12-22 09:04:09,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367. [2020-12-22 09:04:09,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-12-22 09:04:09,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 580 transitions. [2020-12-22 09:04:09,414 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 580 transitions. Word has length 64 [2020-12-22 09:04:09,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:09,414 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 580 transitions. [2020-12-22 09:04:09,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:09,415 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 580 transitions. [2020-12-22 09:04:09,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 09:04:09,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:09,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:04:09,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:04:09,419 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:09,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:09,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1385775307, now seen corresponding path program 1 times [2020-12-22 09:04:09,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:09,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532068497] [2020-12-22 09:04:09,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:09,594 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 09:04:09,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532068497] [2020-12-22 09:04:09,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:09,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:09,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097819951] [2020-12-22 09:04:09,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:09,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:09,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:09,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:09,597 INFO L87 Difference]: Start difference. First operand 367 states and 580 transitions. Second operand 3 states. [2020-12-22 09:04:09,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:09,663 INFO L93 Difference]: Finished difference Result 955 states and 1534 transitions. [2020-12-22 09:04:09,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:09,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 09:04:09,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:09,668 INFO L225 Difference]: With dead ends: 955 [2020-12-22 09:04:09,669 INFO L226 Difference]: Without dead ends: 645 [2020-12-22 09:04:09,670 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 09:04:09,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2020-12-22 09:04:09,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 639. [2020-12-22 09:04:09,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-12-22 09:04:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1016 transitions. [2020-12-22 09:04:09,711 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1016 transitions. Word has length 66 [2020-12-22 09:04:09,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:09,712 INFO L481 AbstractCegarLoop]: Abstraction has 639 states and 1016 transitions. [2020-12-22 09:04:09,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:09,712 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1016 transitions. [2020-12-22 09:04:09,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 09:04:09,715 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:09,715 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] [2020-12-22 09:04:09,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:04:09,716 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:09,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:09,716 INFO L82 PathProgramCache]: Analyzing trace with hash -190660810, now seen corresponding path program 1 times [2020-12-22 09:04:09,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:09,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954630885] [2020-12-22 09:04:09,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:09,982 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 09:04:09,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954630885] [2020-12-22 09:04:09,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:09,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:04:09,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086792590] [2020-12-22 09:04:09,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:04:09,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:09,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:04:09,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:09,988 INFO L87 Difference]: Start difference. First operand 639 states and 1016 transitions. Second operand 5 states. [2020-12-22 09:04:10,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:10,325 INFO L93 Difference]: Finished difference Result 3283 states and 5314 transitions. [2020-12-22 09:04:10,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:04:10,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-22 09:04:10,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:10,342 INFO L225 Difference]: With dead ends: 3283 [2020-12-22 09:04:10,342 INFO L226 Difference]: Without dead ends: 2701 [2020-12-22 09:04:10,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:04:10,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2020-12-22 09:04:10,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 1203. [2020-12-22 09:04:10,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-12-22 09:04:10,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1924 transitions. [2020-12-22 09:04:10,440 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1924 transitions. Word has length 68 [2020-12-22 09:04:10,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:10,442 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1924 transitions. [2020-12-22 09:04:10,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:04:10,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1924 transitions. [2020-12-22 09:04:10,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 09:04:10,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:10,444 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] [2020-12-22 09:04:10,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:04:10,445 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:10,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:10,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1678021987, now seen corresponding path program 1 times [2020-12-22 09:04:10,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:10,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230496540] [2020-12-22 09:04:10,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:10,628 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 09:04:10,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230496540] [2020-12-22 09:04:10,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:10,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:10,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111394924] [2020-12-22 09:04:10,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:10,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:10,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:10,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:10,636 INFO L87 Difference]: Start difference. First operand 1203 states and 1924 transitions. Second operand 4 states. [2020-12-22 09:04:10,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:10,888 INFO L93 Difference]: Finished difference Result 4395 states and 7079 transitions. [2020-12-22 09:04:10,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:10,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-12-22 09:04:10,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:10,909 INFO L225 Difference]: With dead ends: 4395 [2020-12-22 09:04:10,909 INFO L226 Difference]: Without dead ends: 3249 [2020-12-22 09:04:10,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:10,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3249 states. [2020-12-22 09:04:11,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3249 to 2217. [2020-12-22 09:04:11,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2217 states. [2020-12-22 09:04:11,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 3548 transitions. [2020-12-22 09:04:11,097 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 3548 transitions. Word has length 69 [2020-12-22 09:04:11,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:11,098 INFO L481 AbstractCegarLoop]: Abstraction has 2217 states and 3548 transitions. [2020-12-22 09:04:11,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:11,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 3548 transitions. [2020-12-22 09:04:11,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 09:04:11,102 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:11,102 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] [2020-12-22 09:04:11,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:04:11,102 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:11,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:11,103 INFO L82 PathProgramCache]: Analyzing trace with hash -537020195, now seen corresponding path program 1 times [2020-12-22 09:04:11,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:11,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566574147] [2020-12-22 09:04:11,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:11,290 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 09:04:11,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566574147] [2020-12-22 09:04:11,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:11,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:11,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301748396] [2020-12-22 09:04:11,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:11,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:11,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:11,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:11,295 INFO L87 Difference]: Start difference. First operand 2217 states and 3548 transitions. Second operand 4 states. [2020-12-22 09:04:11,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:11,630 INFO L93 Difference]: Finished difference Result 6665 states and 10733 transitions. [2020-12-22 09:04:11,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:11,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-12-22 09:04:11,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:11,654 INFO L225 Difference]: With dead ends: 6665 [2020-12-22 09:04:11,654 INFO L226 Difference]: Without dead ends: 4505 [2020-12-22 09:04:11,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:11,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4505 states. [2020-12-22 09:04:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4505 to 3275. [2020-12-22 09:04:11,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3275 states. [2020-12-22 09:04:11,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 5234 transitions. [2020-12-22 09:04:11,898 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 5234 transitions. Word has length 70 [2020-12-22 09:04:11,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:11,898 INFO L481 AbstractCegarLoop]: Abstraction has 3275 states and 5234 transitions. [2020-12-22 09:04:11,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:11,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 5234 transitions. [2020-12-22 09:04:11,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 09:04:11,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:11,900 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] [2020-12-22 09:04:11,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:04:11,901 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:11,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:11,902 INFO L82 PathProgramCache]: Analyzing trace with hash 478855012, now seen corresponding path program 1 times [2020-12-22 09:04:11,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:11,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841024498] [2020-12-22 09:04:11,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:11,986 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 09:04:11,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841024498] [2020-12-22 09:04:11,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:11,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:11,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093588144] [2020-12-22 09:04:11,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:11,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:11,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:11,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:11,989 INFO L87 Difference]: Start difference. First operand 3275 states and 5234 transitions. Second operand 4 states. [2020-12-22 09:04:12,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:12,416 INFO L93 Difference]: Finished difference Result 9597 states and 15415 transitions. [2020-12-22 09:04:12,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:12,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-22 09:04:12,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:12,450 INFO L225 Difference]: With dead ends: 9597 [2020-12-22 09:04:12,450 INFO L226 Difference]: Without dead ends: 6379 [2020-12-22 09:04:12,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:12,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6379 states. [2020-12-22 09:04:12,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6379 to 4805. [2020-12-22 09:04:12,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4805 states. [2020-12-22 09:04:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4805 states to 4805 states and 7664 transitions. [2020-12-22 09:04:12,820 INFO L78 Accepts]: Start accepts. Automaton has 4805 states and 7664 transitions. Word has length 71 [2020-12-22 09:04:12,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:12,820 INFO L481 AbstractCegarLoop]: Abstraction has 4805 states and 7664 transitions. [2020-12-22 09:04:12,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:12,821 INFO L276 IsEmpty]: Start isEmpty. Operand 4805 states and 7664 transitions. [2020-12-22 09:04:12,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 09:04:12,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:12,829 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] [2020-12-22 09:04:12,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:04:12,830 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:12,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:12,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1637619353, now seen corresponding path program 1 times [2020-12-22 09:04:12,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:12,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136673047] [2020-12-22 09:04:12,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:12,893 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 09:04:12,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136673047] [2020-12-22 09:04:12,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:12,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:12,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656915768] [2020-12-22 09:04:12,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:12,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:12,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:12,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:12,895 INFO L87 Difference]: Start difference. First operand 4805 states and 7664 transitions. Second operand 3 states. [2020-12-22 09:04:13,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:13,321 INFO L93 Difference]: Finished difference Result 11565 states and 18531 transitions. [2020-12-22 09:04:13,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:13,322 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 09:04:13,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:13,377 INFO L225 Difference]: With dead ends: 11565 [2020-12-22 09:04:13,378 INFO L226 Difference]: Without dead ends: 6817 [2020-12-22 09:04:13,386 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 09:04:13,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6817 states. [2020-12-22 09:04:13,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6817 to 6815. [2020-12-22 09:04:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6815 states. [2020-12-22 09:04:13,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6815 states to 6815 states and 10908 transitions. [2020-12-22 09:04:13,843 INFO L78 Accepts]: Start accepts. Automaton has 6815 states and 10908 transitions. Word has length 72 [2020-12-22 09:04:13,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:13,844 INFO L481 AbstractCegarLoop]: Abstraction has 6815 states and 10908 transitions. [2020-12-22 09:04:13,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:13,844 INFO L276 IsEmpty]: Start isEmpty. Operand 6815 states and 10908 transitions. [2020-12-22 09:04:13,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 09:04:13,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:13,845 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] [2020-12-22 09:04:13,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:04:13,846 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:13,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:13,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1419254461, now seen corresponding path program 1 times [2020-12-22 09:04:13,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:13,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890490160] [2020-12-22 09:04:13,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:13,963 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 09:04:13,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890490160] [2020-12-22 09:04:13,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:13,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:13,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145998905] [2020-12-22 09:04:13,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:13,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:13,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:13,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:13,978 INFO L87 Difference]: Start difference. First operand 6815 states and 10908 transitions. Second operand 3 states. [2020-12-22 09:04:14,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:14,657 INFO L93 Difference]: Finished difference Result 14947 states and 23969 transitions. [2020-12-22 09:04:14,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:14,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 09:04:14,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:14,684 INFO L225 Difference]: With dead ends: 14947 [2020-12-22 09:04:14,684 INFO L226 Difference]: Without dead ends: 10127 [2020-12-22 09:04:14,693 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 09:04:14,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10127 states. [2020-12-22 09:04:15,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10127 to 10125. [2020-12-22 09:04:15,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10125 states. [2020-12-22 09:04:15,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10125 states to 10125 states and 16114 transitions. [2020-12-22 09:04:15,326 INFO L78 Accepts]: Start accepts. Automaton has 10125 states and 16114 transitions. Word has length 72 [2020-12-22 09:04:15,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:15,326 INFO L481 AbstractCegarLoop]: Abstraction has 10125 states and 16114 transitions. [2020-12-22 09:04:15,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:15,326 INFO L276 IsEmpty]: Start isEmpty. Operand 10125 states and 16114 transitions. [2020-12-22 09:04:15,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 09:04:15,327 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:15,328 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] [2020-12-22 09:04:15,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:04:15,328 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:15,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:15,329 INFO L82 PathProgramCache]: Analyzing trace with hash 569279253, now seen corresponding path program 1 times [2020-12-22 09:04:15,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:15,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871132122] [2020-12-22 09:04:15,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:15,386 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 09:04:15,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871132122] [2020-12-22 09:04:15,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:15,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:15,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801328635] [2020-12-22 09:04:15,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:15,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:15,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:15,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:15,388 INFO L87 Difference]: Start difference. First operand 10125 states and 16114 transitions. Second operand 3 states. [2020-12-22 09:04:16,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:16,365 INFO L93 Difference]: Finished difference Result 21832 states and 34808 transitions. [2020-12-22 09:04:16,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:16,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 09:04:16,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:16,417 INFO L225 Difference]: With dead ends: 21832 [2020-12-22 09:04:16,417 INFO L226 Difference]: Without dead ends: 14654 [2020-12-22 09:04:16,431 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 09:04:16,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14654 states. [2020-12-22 09:04:17,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14654 to 14652. [2020-12-22 09:04:17,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14652 states. [2020-12-22 09:04:17,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14652 states to 14652 states and 23155 transitions. [2020-12-22 09:04:17,378 INFO L78 Accepts]: Start accepts. Automaton has 14652 states and 23155 transitions. Word has length 72 [2020-12-22 09:04:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:17,378 INFO L481 AbstractCegarLoop]: Abstraction has 14652 states and 23155 transitions. [2020-12-22 09:04:17,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:17,379 INFO L276 IsEmpty]: Start isEmpty. Operand 14652 states and 23155 transitions. [2020-12-22 09:04:17,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 09:04:17,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:17,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:04:17,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:04:17,380 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:17,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:17,381 INFO L82 PathProgramCache]: Analyzing trace with hash -899144939, now seen corresponding path program 1 times [2020-12-22 09:04:17,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:17,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735202326] [2020-12-22 09:04:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:17,517 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 09:04:17,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735202326] [2020-12-22 09:04:17,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:17,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:17,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938630559] [2020-12-22 09:04:17,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:17,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:17,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:17,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:17,522 INFO L87 Difference]: Start difference. First operand 14652 states and 23155 transitions. Second operand 4 states. [2020-12-22 09:04:19,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:19,090 INFO L93 Difference]: Finished difference Result 43370 states and 68482 transitions. [2020-12-22 09:04:19,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:19,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-12-22 09:04:19,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:19,172 INFO L225 Difference]: With dead ends: 43370 [2020-12-22 09:04:19,172 INFO L226 Difference]: Without dead ends: 28727 [2020-12-22 09:04:19,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:19,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28727 states. [2020-12-22 09:04:20,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28727 to 28725. [2020-12-22 09:04:20,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28725 states. [2020-12-22 09:04:21,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28725 states to 28725 states and 45136 transitions. [2020-12-22 09:04:21,040 INFO L78 Accepts]: Start accepts. Automaton has 28725 states and 45136 transitions. Word has length 73 [2020-12-22 09:04:21,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:21,040 INFO L481 AbstractCegarLoop]: Abstraction has 28725 states and 45136 transitions. [2020-12-22 09:04:21,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:21,040 INFO L276 IsEmpty]: Start isEmpty. Operand 28725 states and 45136 transitions. [2020-12-22 09:04:21,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 09:04:21,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:21,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:04:21,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:04:21,042 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:21,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:21,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1735035679, now seen corresponding path program 1 times [2020-12-22 09:04:21,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:21,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559223] [2020-12-22 09:04:21,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:21,079 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 09:04:21,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559223] [2020-12-22 09:04:21,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:21,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:21,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153715372] [2020-12-22 09:04:21,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:21,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:21,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:21,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:21,081 INFO L87 Difference]: Start difference. First operand 28725 states and 45136 transitions. Second operand 3 states. [2020-12-22 09:04:23,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:23,929 INFO L93 Difference]: Finished difference Result 86137 states and 135346 transitions. [2020-12-22 09:04:23,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:23,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 09:04:23,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:24,083 INFO L225 Difference]: With dead ends: 86137 [2020-12-22 09:04:24,083 INFO L226 Difference]: Without dead ends: 57440 [2020-12-22 09:04:24,136 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 09:04:24,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57440 states. [2020-12-22 09:04:26,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57440 to 28727. [2020-12-22 09:04:26,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28727 states. [2020-12-22 09:04:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28727 states to 28727 states and 45138 transitions. [2020-12-22 09:04:26,245 INFO L78 Accepts]: Start accepts. Automaton has 28727 states and 45138 transitions. Word has length 74 [2020-12-22 09:04:26,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:26,245 INFO L481 AbstractCegarLoop]: Abstraction has 28727 states and 45138 transitions. [2020-12-22 09:04:26,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:26,246 INFO L276 IsEmpty]: Start isEmpty. Operand 28727 states and 45138 transitions. [2020-12-22 09:04:26,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 09:04:26,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:26,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:04:26,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:04:26,247 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:26,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:26,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1282212699, now seen corresponding path program 1 times [2020-12-22 09:04:26,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:26,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377179610] [2020-12-22 09:04:26,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:26,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:04:26,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377179610] [2020-12-22 09:04:26,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:26,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:26,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563426414] [2020-12-22 09:04:26,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:26,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:26,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:26,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:26,294 INFO L87 Difference]: Start difference. First operand 28727 states and 45138 transitions. Second operand 3 states. [2020-12-22 09:04:28,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:28,258 INFO L93 Difference]: Finished difference Result 67199 states and 105230 transitions. [2020-12-22 09:04:28,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:28,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 09:04:28,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:28,320 INFO L225 Difference]: With dead ends: 67199 [2020-12-22 09:04:28,320 INFO L226 Difference]: Without dead ends: 38601 [2020-12-22 09:04:28,348 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 09:04:28,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38601 states. [2020-12-22 09:04:30,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38601 to 37325. [2020-12-22 09:04:30,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37325 states. [2020-12-22 09:04:30,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37325 states to 37325 states and 57980 transitions. [2020-12-22 09:04:30,693 INFO L78 Accepts]: Start accepts. Automaton has 37325 states and 57980 transitions. Word has length 74 [2020-12-22 09:04:30,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:30,693 INFO L481 AbstractCegarLoop]: Abstraction has 37325 states and 57980 transitions. [2020-12-22 09:04:30,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:30,694 INFO L276 IsEmpty]: Start isEmpty. Operand 37325 states and 57980 transitions. [2020-12-22 09:04:30,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 09:04:30,695 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:30,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:04:30,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:04:30,695 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:30,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:30,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1471377814, now seen corresponding path program 1 times [2020-12-22 09:04:30,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:30,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689911249] [2020-12-22 09:04:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:30,761 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 09:04:30,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689911249] [2020-12-22 09:04:30,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:30,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:30,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413534310] [2020-12-22 09:04:30,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:30,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:30,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:30,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:30,763 INFO L87 Difference]: Start difference. First operand 37325 states and 57980 transitions. Second operand 3 states. [2020-12-22 09:04:35,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:35,160 INFO L93 Difference]: Finished difference Result 109336 states and 169650 transitions. [2020-12-22 09:04:35,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:35,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 09:04:35,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:35,281 INFO L225 Difference]: With dead ends: 109336 [2020-12-22 09:04:35,281 INFO L226 Difference]: Without dead ends: 72184 [2020-12-22 09:04:35,327 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 09:04:35,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72184 states. [2020-12-22 09:04:39,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72184 to 72182. [2020-12-22 09:04:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72182 states. [2020-12-22 09:04:39,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72182 states to 72182 states and 111169 transitions. [2020-12-22 09:04:39,846 INFO L78 Accepts]: Start accepts. Automaton has 72182 states and 111169 transitions. Word has length 75 [2020-12-22 09:04:39,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:39,847 INFO L481 AbstractCegarLoop]: Abstraction has 72182 states and 111169 transitions. [2020-12-22 09:04:39,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:39,847 INFO L276 IsEmpty]: Start isEmpty. Operand 72182 states and 111169 transitions. [2020-12-22 09:04:39,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 09:04:39,849 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:39,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:04:39,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:04:39,849 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:39,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:39,850 INFO L82 PathProgramCache]: Analyzing trace with hash 20351833, now seen corresponding path program 1 times [2020-12-22 09:04:39,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:39,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444402503] [2020-12-22 09:04:39,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:40,000 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 09:04:40,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444402503] [2020-12-22 09:04:40,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:40,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:04:40,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056348850] [2020-12-22 09:04:40,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:04:40,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:40,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:04:40,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:40,003 INFO L87 Difference]: Start difference. First operand 72182 states and 111169 transitions. Second operand 5 states. [2020-12-22 09:04:48,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:48,094 INFO L93 Difference]: Finished difference Result 209221 states and 322197 transitions. [2020-12-22 09:04:48,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:48,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-22 09:04:48,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:48,463 INFO L225 Difference]: With dead ends: 209221 [2020-12-22 09:04:48,463 INFO L226 Difference]: Without dead ends: 137053 [2020-12-22 09:04:48,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:48,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137053 states. [2020-12-22 09:04:56,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137053 to 137051. [2020-12-22 09:04:56,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137051 states. [2020-12-22 09:04:57,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137051 states to 137051 states and 209718 transitions. [2020-12-22 09:04:57,133 INFO L78 Accepts]: Start accepts. Automaton has 137051 states and 209718 transitions. Word has length 75 [2020-12-22 09:04:57,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:57,134 INFO L481 AbstractCegarLoop]: Abstraction has 137051 states and 209718 transitions. [2020-12-22 09:04:57,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:04:57,134 INFO L276 IsEmpty]: Start isEmpty. Operand 137051 states and 209718 transitions. [2020-12-22 09:04:57,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 09:04:57,136 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:57,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:04:57,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:04:57,137 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:57,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:57,137 INFO L82 PathProgramCache]: Analyzing trace with hash -259692172, now seen corresponding path program 1 times [2020-12-22 09:04:57,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:57,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228262288] [2020-12-22 09:04:57,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:57,248 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 09:04:57,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228262288] [2020-12-22 09:04:57,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:57,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:57,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288222630] [2020-12-22 09:04:57,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:57,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:57,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:57,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:57,253 INFO L87 Difference]: Start difference. First operand 137051 states and 209718 transitions. Second operand 4 states. [2020-12-22 09:05:13,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:13,757 INFO L93 Difference]: Finished difference Result 401958 states and 614153 transitions. [2020-12-22 09:05:13,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:05:13,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-22 09:05:13,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:14,258 INFO L225 Difference]: With dead ends: 401958 [2020-12-22 09:05:14,258 INFO L226 Difference]: Without dead ends: 264963 [2020-12-22 09:05:14,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:05:14,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264963 states. [2020-12-22 09:05:31,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264963 to 264961. [2020-12-22 09:05:31,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264961 states. [2020-12-22 09:05:32,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264961 states to 264961 states and 402111 transitions. [2020-12-22 09:05:32,136 INFO L78 Accepts]: Start accepts. Automaton has 264961 states and 402111 transitions. Word has length 75 [2020-12-22 09:05:32,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:32,136 INFO L481 AbstractCegarLoop]: Abstraction has 264961 states and 402111 transitions. [2020-12-22 09:05:32,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:05:32,136 INFO L276 IsEmpty]: Start isEmpty. Operand 264961 states and 402111 transitions. [2020-12-22 09:05:32,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 09:05:32,140 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:32,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:32,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 09:05:32,140 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:32,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:32,154 INFO L82 PathProgramCache]: Analyzing trace with hash -805359648, now seen corresponding path program 1 times [2020-12-22 09:05:32,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:32,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222354042] [2020-12-22 09:05:32,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:32,189 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 09:05:32,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222354042] [2020-12-22 09:05:32,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:32,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:32,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551392901] [2020-12-22 09:05:32,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:32,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:32,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:32,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:32,192 INFO L87 Difference]: Start difference. First operand 264961 states and 402111 transitions. Second operand 3 states. [2020-12-22 09:06:06,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:06,051 INFO L93 Difference]: Finished difference Result 794731 states and 1206100 transitions. [2020-12-22 09:06:06,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:06,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 09:06:06,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:07,248 INFO L225 Difference]: With dead ends: 794731 [2020-12-22 09:06:07,248 INFO L226 Difference]: Without dead ends: 529861 [2020-12-22 09:06:07,557 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 09:06:07,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529861 states.