/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:31:06,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:31:06,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:31:06,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:31:06,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:31:06,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:31:06,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:31:06,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:31:06,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:31:06,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:31:06,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:31:06,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-12-22 08:31:06,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:31:06,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:31:06,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:31:06,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:31:06,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:31:06,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:31:06,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:31:06,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:31:06,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:31:06,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:31:06,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:31:06,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:31:06,375 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:31:06,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:31:06,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:31:06,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:31:06,377 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:31:06,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:31:06,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:31:06,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:31:06,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:31:06,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:31:06,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:31:06,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:31:06,379 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:31:06,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:31:06,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:31:06,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:31:06,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:31:06,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:31:06,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:31:06,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:31:06,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:31:06,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:31:06,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:31:06,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:31:06,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:31:06,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:31:06,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:31:06,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:31:06,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:31:06,800 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:31:06,801 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:31:06,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:31:06,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61199e835/de2832943307461e95b19bd8d9eaaae2/FLAG64ea02415 [2020-12-22 08:31:07,553 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:31:07,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:31:07,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61199e835/de2832943307461e95b19bd8d9eaaae2/FLAG64ea02415 [2020-12-22 08:31:07,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61199e835/de2832943307461e95b19bd8d9eaaae2 [2020-12-22 08:31:07,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:31:07,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:31:07,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:31:07,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:31:07,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:31:07,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:31:07" (1/1) ... [2020-12-22 08:31:07,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@965cf83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:07, skipping insertion in model container [2020-12-22 08:31:07,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:31:07" (1/1) ... [2020-12-22 08:31:07,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:31:07,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:31:08,292 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8056,8069] [2020-12-22 08:31:08,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:31:08,435 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:31:08,522 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8056,8069] [2020-12-22 08:31:08,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:31:08,636 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:31:08,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:08 WrapperNode [2020-12-22 08:31:08,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:31:08,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:31:08,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:31:08,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:31:08,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:08" (1/1) ... [2020-12-22 08:31:08,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:08" (1/1) ... [2020-12-22 08:31:08,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:31:08,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:31:08,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:31:08,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:31:08,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:08" (1/1) ... [2020-12-22 08:31:08,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:08" (1/1) ... [2020-12-22 08:31:08,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:08" (1/1) ... [2020-12-22 08:31:08,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:08" (1/1) ... [2020-12-22 08:31:08,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:08" (1/1) ... [2020-12-22 08:31:08,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:08" (1/1) ... [2020-12-22 08:31:08,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:08" (1/1) ... [2020-12-22 08:31:08,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:31:08,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:31:08,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:31:08,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:31:08,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:31:08,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:31:08,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:31:08,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:31:08,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:31:10,078 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:31:10,078 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:31:10,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:31:10 BoogieIcfgContainer [2020-12-22 08:31:10,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:31:10,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:31:10,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:31:10,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:31:10,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:31:07" (1/3) ... [2020-12-22 08:31:10,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1979c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:31:10, skipping insertion in model container [2020-12-22 08:31:10,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:08" (2/3) ... [2020-12-22 08:31:10,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1979c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:31:10, skipping insertion in model container [2020-12-22 08:31:10,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:31:10" (3/3) ... [2020-12-22 08:31:10,091 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:31:10,098 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:31:10,104 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:31:10,126 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:31:10,158 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:31:10,158 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:31:10,158 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:31:10,159 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:31:10,159 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:31:10,159 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:31:10,159 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:31:10,159 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:31:10,182 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-12-22 08:31:10,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 08:31:10,196 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:10,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:10,198 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:10,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:10,205 INFO L82 PathProgramCache]: Analyzing trace with hash -465870500, now seen corresponding path program 1 times [2020-12-22 08:31:10,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:10,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268341088] [2020-12-22 08:31:10,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:10,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268341088] [2020-12-22 08:31:10,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:10,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:10,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86642200] [2020-12-22 08:31:10,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:10,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:10,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:10,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:10,832 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 3 states. [2020-12-22 08:31:10,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:10,983 INFO L93 Difference]: Finished difference Result 417 states and 687 transitions. [2020-12-22 08:31:10,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:10,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 08:31:10,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:11,004 INFO L225 Difference]: With dead ends: 417 [2020-12-22 08:31:11,005 INFO L226 Difference]: Without dead ends: 314 [2020-12-22 08:31:11,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:11,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-12-22 08:31:11,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2020-12-22 08:31:11,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-12-22 08:31:11,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 468 transitions. [2020-12-22 08:31:11,094 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 468 transitions. Word has length 79 [2020-12-22 08:31:11,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:11,095 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 468 transitions. [2020-12-22 08:31:11,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:11,095 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 468 transitions. [2020-12-22 08:31:11,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:31:11,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:11,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:11,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:31:11,100 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:11,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:11,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1819425779, now seen corresponding path program 1 times [2020-12-22 08:31:11,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:11,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725369681] [2020-12-22 08:31:11,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:11,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725369681] [2020-12-22 08:31:11,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:11,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:31:11,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248398996] [2020-12-22 08:31:11,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:31:11,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:11,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:31:11,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:11,493 INFO L87 Difference]: Start difference. First operand 312 states and 468 transitions. Second operand 7 states. [2020-12-22 08:31:11,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:11,837 INFO L93 Difference]: Finished difference Result 1358 states and 2106 transitions. [2020-12-22 08:31:11,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:31:11,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-12-22 08:31:11,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:11,846 INFO L225 Difference]: With dead ends: 1358 [2020-12-22 08:31:11,847 INFO L226 Difference]: Without dead ends: 1122 [2020-12-22 08:31:11,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:11,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2020-12-22 08:31:11,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1114. [2020-12-22 08:31:11,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1114 states. [2020-12-22 08:31:11,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1721 transitions. [2020-12-22 08:31:11,974 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1721 transitions. Word has length 80 [2020-12-22 08:31:11,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:11,977 INFO L481 AbstractCegarLoop]: Abstraction has 1114 states and 1721 transitions. [2020-12-22 08:31:11,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:31:11,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1721 transitions. [2020-12-22 08:31:11,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:31:11,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:11,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:11,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:31:11,992 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:11,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:11,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1286257119, now seen corresponding path program 1 times [2020-12-22 08:31:11,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:11,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324833947] [2020-12-22 08:31:11,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:12,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:12,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324833947] [2020-12-22 08:31:12,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:12,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:31:12,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465314748] [2020-12-22 08:31:12,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:31:12,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:12,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:31:12,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:31:12,194 INFO L87 Difference]: Start difference. First operand 1114 states and 1721 transitions. Second operand 6 states. [2020-12-22 08:31:12,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:12,743 INFO L93 Difference]: Finished difference Result 3689 states and 5784 transitions. [2020-12-22 08:31:12,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:31:12,744 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-22 08:31:12,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:12,760 INFO L225 Difference]: With dead ends: 3689 [2020-12-22 08:31:12,760 INFO L226 Difference]: Without dead ends: 2652 [2020-12-22 08:31:12,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:31:12,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2020-12-22 08:31:12,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 2648. [2020-12-22 08:31:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2648 states. [2020-12-22 08:31:12,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 4139 transitions. [2020-12-22 08:31:12,959 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 4139 transitions. Word has length 81 [2020-12-22 08:31:12,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:12,966 INFO L481 AbstractCegarLoop]: Abstraction has 2648 states and 4139 transitions. [2020-12-22 08:31:12,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:31:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 4139 transitions. [2020-12-22 08:31:12,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:31:12,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:12,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:12,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:31:12,973 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:12,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:12,973 INFO L82 PathProgramCache]: Analyzing trace with hash 963502145, now seen corresponding path program 1 times [2020-12-22 08:31:12,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:12,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329976588] [2020-12-22 08:31:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:13,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:13,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329976588] [2020-12-22 08:31:13,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:13,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:31:13,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331361063] [2020-12-22 08:31:13,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:31:13,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:13,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:31:13,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:31:13,154 INFO L87 Difference]: Start difference. First operand 2648 states and 4139 transitions. Second operand 5 states. [2020-12-22 08:31:13,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:13,814 INFO L93 Difference]: Finished difference Result 7355 states and 11586 transitions. [2020-12-22 08:31:13,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:31:13,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-22 08:31:13,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:13,844 INFO L225 Difference]: With dead ends: 7355 [2020-12-22 08:31:13,844 INFO L226 Difference]: Without dead ends: 4848 [2020-12-22 08:31:13,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:13,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4848 states. [2020-12-22 08:31:14,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4848 to 4846. [2020-12-22 08:31:14,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4846 states. [2020-12-22 08:31:14,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4846 states to 4846 states and 7593 transitions. [2020-12-22 08:31:14,226 INFO L78 Accepts]: Start accepts. Automaton has 4846 states and 7593 transitions. Word has length 81 [2020-12-22 08:31:14,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:14,227 INFO L481 AbstractCegarLoop]: Abstraction has 4846 states and 7593 transitions. [2020-12-22 08:31:14,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:31:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 4846 states and 7593 transitions. [2020-12-22 08:31:14,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:31:14,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:14,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:14,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:31:14,231 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:14,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:14,232 INFO L82 PathProgramCache]: Analyzing trace with hash -990576080, now seen corresponding path program 1 times [2020-12-22 08:31:14,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:14,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916195450] [2020-12-22 08:31:14,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:14,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916195450] [2020-12-22 08:31:14,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:14,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:31:14,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056476144] [2020-12-22 08:31:14,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:31:14,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:14,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:31:14,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:31:14,401 INFO L87 Difference]: Start difference. First operand 4846 states and 7593 transitions. Second operand 5 states. [2020-12-22 08:31:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:15,254 INFO L93 Difference]: Finished difference Result 14001 states and 22018 transitions. [2020-12-22 08:31:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:31:15,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-22 08:31:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:15,305 INFO L225 Difference]: With dead ends: 14001 [2020-12-22 08:31:15,305 INFO L226 Difference]: Without dead ends: 9262 [2020-12-22 08:31:15,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:15,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9262 states. [2020-12-22 08:31:16,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9262 to 9260. [2020-12-22 08:31:16,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9260 states. [2020-12-22 08:31:16,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9260 states to 9260 states and 14482 transitions. [2020-12-22 08:31:16,070 INFO L78 Accepts]: Start accepts. Automaton has 9260 states and 14482 transitions. Word has length 81 [2020-12-22 08:31:16,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:16,072 INFO L481 AbstractCegarLoop]: Abstraction has 9260 states and 14482 transitions. [2020-12-22 08:31:16,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:31:16,072 INFO L276 IsEmpty]: Start isEmpty. Operand 9260 states and 14482 transitions. [2020-12-22 08:31:16,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:31:16,081 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:16,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:16,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:31:16,082 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:16,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:16,083 INFO L82 PathProgramCache]: Analyzing trace with hash 2100922190, now seen corresponding path program 1 times [2020-12-22 08:31:16,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:16,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536176216] [2020-12-22 08:31:16,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:16,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536176216] [2020-12-22 08:31:16,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:16,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:31:16,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363941829] [2020-12-22 08:31:16,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:31:16,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:16,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:31:16,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:31:16,200 INFO L87 Difference]: Start difference. First operand 9260 states and 14482 transitions. Second operand 5 states. [2020-12-22 08:31:17,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:17,587 INFO L93 Difference]: Finished difference Result 27442 states and 43000 transitions. [2020-12-22 08:31:17,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:31:17,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-22 08:31:17,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:17,657 INFO L225 Difference]: With dead ends: 27442 [2020-12-22 08:31:17,657 INFO L226 Difference]: Without dead ends: 18236 [2020-12-22 08:31:17,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:17,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18236 states. [2020-12-22 08:31:18,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18236 to 18234. [2020-12-22 08:31:18,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18234 states. [2020-12-22 08:31:18,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18234 states to 18234 states and 28385 transitions. [2020-12-22 08:31:18,974 INFO L78 Accepts]: Start accepts. Automaton has 18234 states and 28385 transitions. Word has length 81 [2020-12-22 08:31:18,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:18,974 INFO L481 AbstractCegarLoop]: Abstraction has 18234 states and 28385 transitions. [2020-12-22 08:31:18,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:31:18,975 INFO L276 IsEmpty]: Start isEmpty. Operand 18234 states and 28385 transitions. [2020-12-22 08:31:18,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:31:18,980 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:18,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:18,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:31:18,980 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:18,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:18,986 INFO L82 PathProgramCache]: Analyzing trace with hash -336684807, now seen corresponding path program 1 times [2020-12-22 08:31:18,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:18,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572094098] [2020-12-22 08:31:18,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:19,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572094098] [2020-12-22 08:31:19,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:19,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:31:19,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49662572] [2020-12-22 08:31:19,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:31:19,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:19,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:31:19,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:31:19,097 INFO L87 Difference]: Start difference. First operand 18234 states and 28385 transitions. Second operand 5 states. [2020-12-22 08:31:21,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:21,336 INFO L93 Difference]: Finished difference Result 34380 states and 53202 transitions. [2020-12-22 08:31:21,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:31:21,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-12-22 08:31:21,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:21,425 INFO L225 Difference]: With dead ends: 34380 [2020-12-22 08:31:21,425 INFO L226 Difference]: Without dead ends: 34378 [2020-12-22 08:31:21,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:31:21,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34378 states. [2020-12-22 08:31:22,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34378 to 18474. [2020-12-22 08:31:22,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18474 states. [2020-12-22 08:31:22,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18474 states to 18474 states and 28625 transitions. [2020-12-22 08:31:22,741 INFO L78 Accepts]: Start accepts. Automaton has 18474 states and 28625 transitions. Word has length 82 [2020-12-22 08:31:22,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:22,742 INFO L481 AbstractCegarLoop]: Abstraction has 18474 states and 28625 transitions. [2020-12-22 08:31:22,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:31:22,742 INFO L276 IsEmpty]: Start isEmpty. Operand 18474 states and 28625 transitions. [2020-12-22 08:31:22,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:31:22,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:22,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:22,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:31:22,749 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:22,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:22,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1586000185, now seen corresponding path program 1 times [2020-12-22 08:31:22,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:22,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735051504] [2020-12-22 08:31:22,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:23,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:23,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735051504] [2020-12-22 08:31:23,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:23,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:31:23,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606411849] [2020-12-22 08:31:23,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:31:23,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:23,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:31:23,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:31:23,010 INFO L87 Difference]: Start difference. First operand 18474 states and 28625 transitions. Second operand 10 states. [2020-12-22 08:31:33,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:33,159 INFO L93 Difference]: Finished difference Result 139439 states and 216184 transitions. [2020-12-22 08:31:33,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-22 08:31:33,160 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-12-22 08:31:33,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:33,437 INFO L225 Difference]: With dead ends: 139439 [2020-12-22 08:31:33,438 INFO L226 Difference]: Without dead ends: 129181 [2020-12-22 08:31:33,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 08:31:33,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129181 states. [2020-12-22 08:31:36,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129181 to 18691. [2020-12-22 08:31:36,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18691 states. [2020-12-22 08:31:36,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18691 states to 18691 states and 28912 transitions. [2020-12-22 08:31:36,073 INFO L78 Accepts]: Start accepts. Automaton has 18691 states and 28912 transitions. Word has length 83 [2020-12-22 08:31:36,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:36,074 INFO L481 AbstractCegarLoop]: Abstraction has 18691 states and 28912 transitions. [2020-12-22 08:31:36,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:31:36,074 INFO L276 IsEmpty]: Start isEmpty. Operand 18691 states and 28912 transitions. [2020-12-22 08:31:36,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:31:36,080 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:36,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:36,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:31:36,081 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:36,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:36,081 INFO L82 PathProgramCache]: Analyzing trace with hash 640573063, now seen corresponding path program 1 times [2020-12-22 08:31:36,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:36,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246475291] [2020-12-22 08:31:36,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:36,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246475291] [2020-12-22 08:31:36,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:36,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:31:36,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106608270] [2020-12-22 08:31:36,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:31:36,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:36,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:31:36,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:31:36,327 INFO L87 Difference]: Start difference. First operand 18691 states and 28912 transitions. Second operand 10 states. [2020-12-22 08:31:45,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:45,743 INFO L93 Difference]: Finished difference Result 98090 states and 151135 transitions. [2020-12-22 08:31:45,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:31:45,744 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-12-22 08:31:45,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:45,919 INFO L225 Difference]: With dead ends: 98090 [2020-12-22 08:31:45,919 INFO L226 Difference]: Without dead ends: 95896 [2020-12-22 08:31:45,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2020-12-22 08:31:46,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95896 states. [2020-12-22 08:31:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95896 to 18691. [2020-12-22 08:31:48,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18691 states. [2020-12-22 08:31:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18691 states to 18691 states and 28910 transitions. [2020-12-22 08:31:48,295 INFO L78 Accepts]: Start accepts. Automaton has 18691 states and 28910 transitions. Word has length 83 [2020-12-22 08:31:48,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:48,296 INFO L481 AbstractCegarLoop]: Abstraction has 18691 states and 28910 transitions. [2020-12-22 08:31:48,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:31:48,296 INFO L276 IsEmpty]: Start isEmpty. Operand 18691 states and 28910 transitions. [2020-12-22 08:31:48,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:31:48,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:48,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:48,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:31:48,302 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:48,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:48,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1864782503, now seen corresponding path program 1 times [2020-12-22 08:31:48,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:48,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349687731] [2020-12-22 08:31:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:48,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349687731] [2020-12-22 08:31:48,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:48,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:31:48,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023940861] [2020-12-22 08:31:48,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:31:48,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:48,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:31:48,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:31:48,535 INFO L87 Difference]: Start difference. First operand 18691 states and 28910 transitions. Second operand 10 states. [2020-12-22 08:31:56,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:56,207 INFO L93 Difference]: Finished difference Result 59719 states and 91300 transitions. [2020-12-22 08:31:56,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:31:56,207 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-12-22 08:31:56,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:56,269 INFO L225 Difference]: With dead ends: 59719 [2020-12-22 08:31:56,270 INFO L226 Difference]: Without dead ends: 53765 [2020-12-22 08:31:56,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-12-22 08:31:56,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53765 states. [2020-12-22 08:31:58,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53765 to 19087. [2020-12-22 08:31:58,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19087 states. [2020-12-22 08:31:58,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19087 states to 19087 states and 29474 transitions. [2020-12-22 08:31:58,493 INFO L78 Accepts]: Start accepts. Automaton has 19087 states and 29474 transitions. Word has length 83 [2020-12-22 08:31:58,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:58,493 INFO L481 AbstractCegarLoop]: Abstraction has 19087 states and 29474 transitions. [2020-12-22 08:31:58,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:31:58,493 INFO L276 IsEmpty]: Start isEmpty. Operand 19087 states and 29474 transitions. [2020-12-22 08:31:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:31:58,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:58,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:58,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:31:58,502 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:58,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:58,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1599214311, now seen corresponding path program 1 times [2020-12-22 08:31:58,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:58,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016966743] [2020-12-22 08:31:58,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:58,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016966743] [2020-12-22 08:31:58,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:58,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:31:58,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345346327] [2020-12-22 08:31:58,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:31:58,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:58,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:31:58,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:31:58,724 INFO L87 Difference]: Start difference. First operand 19087 states and 29474 transitions. Second operand 10 states. [2020-12-22 08:32:08,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:08,900 INFO L93 Difference]: Finished difference Result 89431 states and 136992 transitions. [2020-12-22 08:32:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:32:08,901 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-12-22 08:32:08,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:08,987 INFO L225 Difference]: With dead ends: 89431 [2020-12-22 08:32:08,988 INFO L226 Difference]: Without dead ends: 76189 [2020-12-22 08:32:09,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=219, Invalid=593, Unknown=0, NotChecked=0, Total=812 [2020-12-22 08:32:09,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76189 states. [2020-12-22 08:32:11,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76189 to 19391. [2020-12-22 08:32:11,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19391 states. [2020-12-22 08:32:11,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19391 states to 19391 states and 29871 transitions. [2020-12-22 08:32:11,917 INFO L78 Accepts]: Start accepts. Automaton has 19391 states and 29871 transitions. Word has length 83 [2020-12-22 08:32:11,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:11,917 INFO L481 AbstractCegarLoop]: Abstraction has 19391 states and 29871 transitions. [2020-12-22 08:32:11,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:32:11,917 INFO L276 IsEmpty]: Start isEmpty. Operand 19391 states and 29871 transitions. [2020-12-22 08:32:11,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:32:11,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:11,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:11,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:32:11,925 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:11,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:11,926 INFO L82 PathProgramCache]: Analyzing trace with hash 67573609, now seen corresponding path program 1 times [2020-12-22 08:32:11,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:11,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227213475] [2020-12-22 08:32:11,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:12,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:12,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227213475] [2020-12-22 08:32:12,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:12,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:32:12,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365930770] [2020-12-22 08:32:12,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:32:12,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:12,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:32:12,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:32:12,020 INFO L87 Difference]: Start difference. First operand 19391 states and 29871 transitions. Second operand 6 states. [2020-12-22 08:32:18,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:18,660 INFO L93 Difference]: Finished difference Result 72525 states and 111755 transitions. [2020-12-22 08:32:18,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:32:18,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-12-22 08:32:18,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:18,752 INFO L225 Difference]: With dead ends: 72525 [2020-12-22 08:32:18,752 INFO L226 Difference]: Without dead ends: 53197 [2020-12-22 08:32:18,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:32:18,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53197 states. [2020-12-22 08:32:23,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53197 to 37878. [2020-12-22 08:32:23,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37878 states. [2020-12-22 08:32:23,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37878 states to 37878 states and 58120 transitions. [2020-12-22 08:32:23,620 INFO L78 Accepts]: Start accepts. Automaton has 37878 states and 58120 transitions. Word has length 83 [2020-12-22 08:32:23,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:23,620 INFO L481 AbstractCegarLoop]: Abstraction has 37878 states and 58120 transitions. [2020-12-22 08:32:23,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:32:23,620 INFO L276 IsEmpty]: Start isEmpty. Operand 37878 states and 58120 transitions. [2020-12-22 08:32:23,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:32:23,631 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:23,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:23,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:32:23,632 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:23,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:23,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1469957880, now seen corresponding path program 1 times [2020-12-22 08:32:23,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:23,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288259920] [2020-12-22 08:32:23,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:23,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288259920] [2020-12-22 08:32:23,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:23,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:23,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856471351] [2020-12-22 08:32:23,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:23,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:23,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:23,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:23,694 INFO L87 Difference]: Start difference. First operand 37878 states and 58120 transitions. Second operand 3 states. [2020-12-22 08:32:29,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:29,936 INFO L93 Difference]: Finished difference Result 59795 states and 91843 transitions. [2020-12-22 08:32:29,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:29,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-22 08:32:29,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:30,116 INFO L225 Difference]: With dead ends: 59795 [2020-12-22 08:32:30,116 INFO L226 Difference]: Without dead ends: 44073 [2020-12-22 08:32:30,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:30,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44073 states. [2020-12-22 08:32:35,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44073 to 43659. [2020-12-22 08:32:35,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43659 states. [2020-12-22 08:32:35,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43659 states to 43659 states and 66165 transitions. [2020-12-22 08:32:35,814 INFO L78 Accepts]: Start accepts. Automaton has 43659 states and 66165 transitions. Word has length 84 [2020-12-22 08:32:35,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:35,815 INFO L481 AbstractCegarLoop]: Abstraction has 43659 states and 66165 transitions. [2020-12-22 08:32:35,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:32:35,815 INFO L276 IsEmpty]: Start isEmpty. Operand 43659 states and 66165 transitions. [2020-12-22 08:32:35,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:32:35,827 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:35,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:35,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:32:35,827 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:35,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:35,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1045499168, now seen corresponding path program 1 times [2020-12-22 08:32:35,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:35,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264622927] [2020-12-22 08:32:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:35,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:35,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264622927] [2020-12-22 08:32:35,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:35,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:32:35,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214829574] [2020-12-22 08:32:35,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:32:35,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:35,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:32:35,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:32:35,938 INFO L87 Difference]: Start difference. First operand 43659 states and 66165 transitions. Second operand 4 states. [2020-12-22 08:32:46,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:46,830 INFO L93 Difference]: Finished difference Result 121187 states and 183471 transitions. [2020-12-22 08:32:46,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:32:46,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-12-22 08:32:46,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:46,932 INFO L225 Difference]: With dead ends: 121187 [2020-12-22 08:32:46,932 INFO L226 Difference]: Without dead ends: 79857 [2020-12-22 08:32:46,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:32:47,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79857 states. [2020-12-22 08:32:57,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79857 to 79303. [2020-12-22 08:32:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79303 states. [2020-12-22 08:32:57,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79303 states to 79303 states and 119069 transitions. [2020-12-22 08:32:57,717 INFO L78 Accepts]: Start accepts. Automaton has 79303 states and 119069 transitions. Word has length 84 [2020-12-22 08:32:57,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:57,718 INFO L481 AbstractCegarLoop]: Abstraction has 79303 states and 119069 transitions. [2020-12-22 08:32:57,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:32:57,718 INFO L276 IsEmpty]: Start isEmpty. Operand 79303 states and 119069 transitions. [2020-12-22 08:32:57,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:32:57,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:57,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:57,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:32:57,726 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:57,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:57,727 INFO L82 PathProgramCache]: Analyzing trace with hash -720169287, now seen corresponding path program 1 times [2020-12-22 08:32:57,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:57,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411023177] [2020-12-22 08:32:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:57,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411023177] [2020-12-22 08:32:57,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:57,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:57,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044368751] [2020-12-22 08:32:57,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:57,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:57,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:57,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:57,780 INFO L87 Difference]: Start difference. First operand 79303 states and 119069 transitions. Second operand 3 states. [2020-12-22 08:33:17,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:17,155 INFO L93 Difference]: Finished difference Result 211296 states and 317891 transitions. [2020-12-22 08:33:17,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:33:17,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-22 08:33:17,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:17,541 INFO L225 Difference]: With dead ends: 211296 [2020-12-22 08:33:17,541 INFO L226 Difference]: Without dead ends: 142954 [2020-12-22 08:33:17,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:17,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142954 states. [2020-12-22 08:33:33,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142954 to 111443. [2020-12-22 08:33:33,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111443 states. [2020-12-22 08:33:33,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111443 states to 111443 states and 166739 transitions. [2020-12-22 08:33:33,824 INFO L78 Accepts]: Start accepts. Automaton has 111443 states and 166739 transitions. Word has length 84 [2020-12-22 08:33:33,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:33,824 INFO L481 AbstractCegarLoop]: Abstraction has 111443 states and 166739 transitions. [2020-12-22 08:33:33,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:33:33,825 INFO L276 IsEmpty]: Start isEmpty. Operand 111443 states and 166739 transitions. [2020-12-22 08:33:33,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:33:33,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:33,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:33,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:33:33,842 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:33,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:33,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1264170607, now seen corresponding path program 1 times [2020-12-22 08:33:33,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:33,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840052848] [2020-12-22 08:33:33,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:33:33,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840052848] [2020-12-22 08:33:33,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:33,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:33:33,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495076809] [2020-12-22 08:33:33,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:33:33,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:33,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:33:33,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:33,897 INFO L87 Difference]: Start difference. First operand 111443 states and 166739 transitions. Second operand 3 states. [2020-12-22 08:33:50,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:50,116 INFO L93 Difference]: Finished difference Result 146215 states and 218119 transitions. [2020-12-22 08:33:50,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:33:50,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-22 08:33:50,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:50,289 INFO L225 Difference]: With dead ends: 146215 [2020-12-22 08:33:50,289 INFO L226 Difference]: Without dead ends: 114009 [2020-12-22 08:33:50,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:50,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114009 states. [2020-12-22 08:34:05,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114009 to 104287. [2020-12-22 08:34:05,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104287 states. [2020-12-22 08:34:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104287 states to 104287 states and 153617 transitions. [2020-12-22 08:34:06,066 INFO L78 Accepts]: Start accepts. Automaton has 104287 states and 153617 transitions. Word has length 84 [2020-12-22 08:34:06,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:06,067 INFO L481 AbstractCegarLoop]: Abstraction has 104287 states and 153617 transitions. [2020-12-22 08:34:06,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:34:06,067 INFO L276 IsEmpty]: Start isEmpty. Operand 104287 states and 153617 transitions. [2020-12-22 08:34:06,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:34:06,076 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:06,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:34:06,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:34:06,077 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:06,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:06,077 INFO L82 PathProgramCache]: Analyzing trace with hash 725890361, now seen corresponding path program 1 times [2020-12-22 08:34:06,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:06,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033795717] [2020-12-22 08:34:06,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:06,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033795717] [2020-12-22 08:34:06,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:06,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:34:06,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8304226] [2020-12-22 08:34:06,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:34:06,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:06,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:34:06,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:34:06,151 INFO L87 Difference]: Start difference. First operand 104287 states and 153617 transitions. Second operand 3 states. [2020-12-22 08:34:27,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:27,225 INFO L93 Difference]: Finished difference Result 207587 states and 306160 transitions. [2020-12-22 08:34:27,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:34:27,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-22 08:34:27,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:27,463 INFO L225 Difference]: With dead ends: 207587 [2020-12-22 08:34:27,464 INFO L226 Difference]: Without dead ends: 133659 [2020-12-22 08:34:27,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:34:27,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133659 states. [2020-12-22 08:34:48,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133659 to 132249. [2020-12-22 08:34:48,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132249 states. [2020-12-22 08:34:48,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132249 states to 132249 states and 192108 transitions. [2020-12-22 08:34:48,497 INFO L78 Accepts]: Start accepts. Automaton has 132249 states and 192108 transitions. Word has length 84 [2020-12-22 08:34:48,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:48,498 INFO L481 AbstractCegarLoop]: Abstraction has 132249 states and 192108 transitions. [2020-12-22 08:34:48,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:34:48,498 INFO L276 IsEmpty]: Start isEmpty. Operand 132249 states and 192108 transitions. [2020-12-22 08:34:48,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 08:34:48,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:48,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:34:48,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:34:48,509 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:48,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:48,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1100960768, now seen corresponding path program 1 times [2020-12-22 08:34:48,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:48,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299251460] [2020-12-22 08:34:48,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:48,628 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 08:34:48,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299251460] [2020-12-22 08:34:48,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:48,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:34:48,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66331951] [2020-12-22 08:34:48,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:34:48,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:48,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:34:48,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:34:48,635 INFO L87 Difference]: Start difference. First operand 132249 states and 192108 transitions. Second operand 7 states.