/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+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:30:05,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:30:05,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:30:05,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:30:05,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:30:05,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:30:05,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:30:05,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:30:05,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:30:05,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:30:05,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:30:05,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:30:05,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:30:05,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:30:05,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:30:05,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:30:05,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:30:05,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:30:05,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:30:05,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:30:05,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:30:05,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:30:05,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:30:05,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:30:05,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 08:30:05,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 08:30:05,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 08:30:05,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 08:30:05,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 08:30:05,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 08:30:05,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:30:05,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:30:05,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:30:05,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:30:05,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:30:05,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:30:05,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:30:05,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:30:05,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:30:05,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:30:05,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:30:05,512 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:30:05,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:30:05,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:30:05,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:30:05,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:30:05,569 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:30:05,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:30:05,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:30:05,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:30:05,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:30:05,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:30:05,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:30:05,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:30:05,572 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:30:05,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:30:05,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:30:05,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:30:05,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:30:05,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:30:05,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:30:05,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:30:05,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:30:05,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:30:05,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:30:05,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:30:05,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:30:05,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:30:06,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:30:06,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:30:06,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:30:06,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:30:06,043 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:30:06,044 INFO L432 ainManager$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+cfa-reducer.c [2020-12-22 08:30:06,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fcc193cf/ac30ebdcc47b42a0b25f663eea6d103e/FLAGa8199606f [2020-12-22 08:30:06,721 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:30:06,722 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+cfa-reducer.c [2020-12-22 08:30:06,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fcc193cf/ac30ebdcc47b42a0b25f663eea6d103e/FLAGa8199606f [2020-12-22 08:30:07,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fcc193cf/ac30ebdcc47b42a0b25f663eea6d103e [2020-12-22 08:30:07,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:30:07,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:30:07,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:30:07,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:30:07,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:30:07,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:30:07" (1/1) ... [2020-12-22 08:30:07,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e6fc74f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:07, skipping insertion in model container [2020-12-22 08:30:07,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:30:07" (1/1) ... [2020-12-22 08:30:07,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:30:07,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:30:07,410 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+cfa-reducer.c[5954,5967] [2020-12-22 08:30:07,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:30:07,495 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:30:07,561 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+cfa-reducer.c[5954,5967] [2020-12-22 08:30:07,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:30:07,608 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:30:07,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:07 WrapperNode [2020-12-22 08:30:07,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:30:07,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:30:07,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:30:07,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:30:07,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:07" (1/1) ... [2020-12-22 08:30:07,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:07" (1/1) ... [2020-12-22 08:30:07,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:30:07,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:30:07,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:30:07,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:30:07,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:07" (1/1) ... [2020-12-22 08:30:07,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:07" (1/1) ... [2020-12-22 08:30:07,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:07" (1/1) ... [2020-12-22 08:30:07,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:07" (1/1) ... [2020-12-22 08:30:07,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:07" (1/1) ... [2020-12-22 08:30:07,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:07" (1/1) ... [2020-12-22 08:30:07,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:07" (1/1) ... [2020-12-22 08:30:07,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:30:07,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:30:07,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:30:07,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:30:07,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:07" (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 08:30:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:30:07,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:30:07,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:30:07,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:30:08,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:30:08,757 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:30:08,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:30:08 BoogieIcfgContainer [2020-12-22 08:30:08,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:30:08,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:30:08,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:30:08,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:30:08,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:30:07" (1/3) ... [2020-12-22 08:30:08,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e807fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:30:08, skipping insertion in model container [2020-12-22 08:30:08,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:07" (2/3) ... [2020-12-22 08:30:08,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e807fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:30:08, skipping insertion in model container [2020-12-22 08:30:08,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:30:08" (3/3) ... [2020-12-22 08:30:08,776 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:30:08,788 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:30:08,794 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:30:08,818 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:30:08,850 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:30:08,850 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:30:08,850 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:30:08,850 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:30:08,851 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:30:08,851 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:30:08,851 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:30:08,851 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:30:08,872 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states. [2020-12-22 08:30:08,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 08:30:08,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:08,885 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] [2020-12-22 08:30:08,885 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:08,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:08,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1416821255, now seen corresponding path program 1 times [2020-12-22 08:30:08,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:08,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476713406] [2020-12-22 08:30:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:09,332 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 08:30:09,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476713406] [2020-12-22 08:30:09,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:09,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:30:09,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468050742] [2020-12-22 08:30:09,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:30:09,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:09,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:30:09,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:30:09,362 INFO L87 Difference]: Start difference. First operand 133 states. Second operand 3 states. [2020-12-22 08:30:09,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:09,451 INFO L93 Difference]: Finished difference Result 313 states and 504 transitions. [2020-12-22 08:30:09,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:30:09,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-22 08:30:09,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:09,485 INFO L225 Difference]: With dead ends: 313 [2020-12-22 08:30:09,485 INFO L226 Difference]: Without dead ends: 209 [2020-12-22 08:30:09,492 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 08:30:09,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-12-22 08:30:09,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 207. [2020-12-22 08:30:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-12-22 08:30:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 309 transitions. [2020-12-22 08:30:09,608 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 309 transitions. Word has length 60 [2020-12-22 08:30:09,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:09,608 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 309 transitions. [2020-12-22 08:30:09,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:30:09,609 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 309 transitions. [2020-12-22 08:30:09,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:30:09,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:09,611 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] [2020-12-22 08:30:09,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:30:09,612 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:09,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:09,613 INFO L82 PathProgramCache]: Analyzing trace with hash 20222822, now seen corresponding path program 1 times [2020-12-22 08:30:09,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:09,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122278880] [2020-12-22 08:30:09,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:09,765 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 08:30:09,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122278880] [2020-12-22 08:30:09,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:09,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:30:09,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692420817] [2020-12-22 08:30:09,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:30:09,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:09,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:30:09,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:30:09,770 INFO L87 Difference]: Start difference. First operand 207 states and 309 transitions. Second operand 3 states. [2020-12-22 08:30:09,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:09,833 INFO L93 Difference]: Finished difference Result 519 states and 805 transitions. [2020-12-22 08:30:09,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:30:09,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 08:30:09,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:09,840 INFO L225 Difference]: With dead ends: 519 [2020-12-22 08:30:09,840 INFO L226 Difference]: Without dead ends: 347 [2020-12-22 08:30:09,844 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 08:30:09,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-12-22 08:30:09,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2020-12-22 08:30:09,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-12-22 08:30:09,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 528 transitions. [2020-12-22 08:30:09,930 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 528 transitions. Word has length 61 [2020-12-22 08:30:09,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:09,930 INFO L481 AbstractCegarLoop]: Abstraction has 345 states and 528 transitions. [2020-12-22 08:30:09,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:30:09,931 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 528 transitions. [2020-12-22 08:30:09,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 08:30:09,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:09,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:30:09,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:30:09,937 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:09,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:09,941 INFO L82 PathProgramCache]: Analyzing trace with hash -2012832692, now seen corresponding path program 1 times [2020-12-22 08:30:09,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:09,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545487325] [2020-12-22 08:30:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:10,093 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 08:30:10,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545487325] [2020-12-22 08:30:10,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:10,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:30:10,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564357795] [2020-12-22 08:30:10,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:30:10,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:10,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:30:10,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:30:10,096 INFO L87 Difference]: Start difference. First operand 345 states and 528 transitions. Second operand 3 states. [2020-12-22 08:30:10,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:10,209 INFO L93 Difference]: Finished difference Result 901 states and 1410 transitions. [2020-12-22 08:30:10,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:30:10,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-22 08:30:10,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:10,220 INFO L225 Difference]: With dead ends: 901 [2020-12-22 08:30:10,220 INFO L226 Difference]: Without dead ends: 591 [2020-12-22 08:30:10,222 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 08:30:10,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-12-22 08:30:10,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 589. [2020-12-22 08:30:10,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2020-12-22 08:30:10,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 912 transitions. [2020-12-22 08:30:10,270 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 912 transitions. Word has length 62 [2020-12-22 08:30:10,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:10,271 INFO L481 AbstractCegarLoop]: Abstraction has 589 states and 912 transitions. [2020-12-22 08:30:10,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:30:10,271 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 912 transitions. [2020-12-22 08:30:10,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:30:10,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:10,274 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] [2020-12-22 08:30:10,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:30:10,274 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:10,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:10,275 INFO L82 PathProgramCache]: Analyzing trace with hash 345107267, now seen corresponding path program 1 times [2020-12-22 08:30:10,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:10,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357183787] [2020-12-22 08:30:10,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:10,406 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 08:30:10,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357183787] [2020-12-22 08:30:10,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:10,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:30:10,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186450237] [2020-12-22 08:30:10,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:30:10,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:10,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:30:10,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:30:10,409 INFO L87 Difference]: Start difference. First operand 589 states and 912 transitions. Second operand 3 states. [2020-12-22 08:30:10,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:10,504 INFO L93 Difference]: Finished difference Result 1569 states and 2458 transitions. [2020-12-22 08:30:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:30:10,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 08:30:10,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:10,511 INFO L225 Difference]: With dead ends: 1569 [2020-12-22 08:30:10,512 INFO L226 Difference]: Without dead ends: 1015 [2020-12-22 08:30:10,515 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 08:30:10,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-12-22 08:30:10,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 1013. [2020-12-22 08:30:10,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2020-12-22 08:30:10,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1572 transitions. [2020-12-22 08:30:10,584 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1572 transitions. Word has length 63 [2020-12-22 08:30:10,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:10,584 INFO L481 AbstractCegarLoop]: Abstraction has 1013 states and 1572 transitions. [2020-12-22 08:30:10,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:30:10,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1572 transitions. [2020-12-22 08:30:10,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:30:10,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:10,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:30:10,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:30:10,587 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:10,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:10,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1868026547, now seen corresponding path program 1 times [2020-12-22 08:30:10,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:10,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877125758] [2020-12-22 08:30:10,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:10,845 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 08:30:10,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877125758] [2020-12-22 08:30:10,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:10,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:30:10,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926270661] [2020-12-22 08:30:10,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:30:10,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:10,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:30:10,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:30:10,850 INFO L87 Difference]: Start difference. First operand 1013 states and 1572 transitions. Second operand 7 states. [2020-12-22 08:30:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:11,343 INFO L93 Difference]: Finished difference Result 5263 states and 8201 transitions. [2020-12-22 08:30:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:30:11,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-12-22 08:30:11,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:11,369 INFO L225 Difference]: With dead ends: 5263 [2020-12-22 08:30:11,369 INFO L226 Difference]: Without dead ends: 4285 [2020-12-22 08:30:11,372 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 08:30:11,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4285 states. [2020-12-22 08:30:11,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4285 to 4277. [2020-12-22 08:30:11,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4277 states. [2020-12-22 08:30:11,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4277 states to 4277 states and 6644 transitions. [2020-12-22 08:30:11,707 INFO L78 Accepts]: Start accepts. Automaton has 4277 states and 6644 transitions. Word has length 64 [2020-12-22 08:30:11,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:11,708 INFO L481 AbstractCegarLoop]: Abstraction has 4277 states and 6644 transitions. [2020-12-22 08:30:11,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:30:11,709 INFO L276 IsEmpty]: Start isEmpty. Operand 4277 states and 6644 transitions. [2020-12-22 08:30:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:30:11,715 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:11,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:30:11,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:30:11,716 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:11,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:11,717 INFO L82 PathProgramCache]: Analyzing trace with hash -919047492, now seen corresponding path program 1 times [2020-12-22 08:30:11,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:11,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342318367] [2020-12-22 08:30:11,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:11,854 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 08:30:11,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342318367] [2020-12-22 08:30:11,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:11,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:30:11,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724137958] [2020-12-22 08:30:11,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:30:11,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:11,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:30:11,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:30:11,859 INFO L87 Difference]: Start difference. First operand 4277 states and 6644 transitions. Second operand 6 states. [2020-12-22 08:30:12,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:12,954 INFO L93 Difference]: Finished difference Result 16779 states and 26087 transitions. [2020-12-22 08:30:12,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:30:12,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-12-22 08:30:12,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:13,021 INFO L225 Difference]: With dead ends: 16779 [2020-12-22 08:30:13,022 INFO L226 Difference]: Without dead ends: 12537 [2020-12-22 08:30:13,033 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 08:30:13,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12537 states. [2020-12-22 08:30:14,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12537 to 12533. [2020-12-22 08:30:14,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12533 states. [2020-12-22 08:30:14,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12533 states to 12533 states and 19412 transitions. [2020-12-22 08:30:14,106 INFO L78 Accepts]: Start accepts. Automaton has 12533 states and 19412 transitions. Word has length 66 [2020-12-22 08:30:14,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:14,106 INFO L481 AbstractCegarLoop]: Abstraction has 12533 states and 19412 transitions. [2020-12-22 08:30:14,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:30:14,107 INFO L276 IsEmpty]: Start isEmpty. Operand 12533 states and 19412 transitions. [2020-12-22 08:30:14,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:30:14,108 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:14,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:30:14,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:30:14,109 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:14,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:14,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1416140959, now seen corresponding path program 1 times [2020-12-22 08:30:14,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:14,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275536110] [2020-12-22 08:30:14,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:14,224 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 08:30:14,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275536110] [2020-12-22 08:30:14,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:14,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:30:14,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882504883] [2020-12-22 08:30:14,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:30:14,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:14,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:30:14,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:30:14,227 INFO L87 Difference]: Start difference. First operand 12533 states and 19412 transitions. Second operand 7 states. [2020-12-22 08:30:17,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:17,364 INFO L93 Difference]: Finished difference Result 63657 states and 98690 transitions. [2020-12-22 08:30:17,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:30:17,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-12-22 08:30:17,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:17,532 INFO L225 Difference]: With dead ends: 63657 [2020-12-22 08:30:17,533 INFO L226 Difference]: Without dead ends: 51159 [2020-12-22 08:30:17,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:30:17,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51159 states. [2020-12-22 08:30:20,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51159 to 25029. [2020-12-22 08:30:20,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25029 states. [2020-12-22 08:30:20,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25029 states to 25029 states and 38308 transitions. [2020-12-22 08:30:20,167 INFO L78 Accepts]: Start accepts. Automaton has 25029 states and 38308 transitions. Word has length 66 [2020-12-22 08:30:20,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:20,168 INFO L481 AbstractCegarLoop]: Abstraction has 25029 states and 38308 transitions. [2020-12-22 08:30:20,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:30:20,168 INFO L276 IsEmpty]: Start isEmpty. Operand 25029 states and 38308 transitions. [2020-12-22 08:30:20,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:30:20,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:20,170 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] [2020-12-22 08:30:20,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:30:20,170 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:20,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:20,171 INFO L82 PathProgramCache]: Analyzing trace with hash -970153006, now seen corresponding path program 1 times [2020-12-22 08:30:20,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:20,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600172454] [2020-12-22 08:30:20,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:20,268 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 08:30:20,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600172454] [2020-12-22 08:30:20,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:20,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:30:20,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908579761] [2020-12-22 08:30:20,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:30:20,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:20,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:30:20,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:30:20,271 INFO L87 Difference]: Start difference. First operand 25029 states and 38308 transitions. Second operand 5 states. [2020-12-22 08:30:23,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:23,327 INFO L93 Difference]: Finished difference Result 50983 states and 77541 transitions. [2020-12-22 08:30:23,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:30:23,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-22 08:30:23,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:23,457 INFO L225 Difference]: With dead ends: 50983 [2020-12-22 08:30:23,458 INFO L226 Difference]: Without dead ends: 50981 [2020-12-22 08:30:23,474 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 08:30:23,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50981 states. [2020-12-22 08:30:25,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50981 to 25989. [2020-12-22 08:30:25,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25989 states. [2020-12-22 08:30:25,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25989 states to 25989 states and 39268 transitions. [2020-12-22 08:30:25,928 INFO L78 Accepts]: Start accepts. Automaton has 25989 states and 39268 transitions. Word has length 67 [2020-12-22 08:30:25,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:25,929 INFO L481 AbstractCegarLoop]: Abstraction has 25989 states and 39268 transitions. [2020-12-22 08:30:25,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:30:25,929 INFO L276 IsEmpty]: Start isEmpty. Operand 25989 states and 39268 transitions. [2020-12-22 08:30:25,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:30:25,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:25,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:30:25,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:30:25,931 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:25,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:25,932 INFO L82 PathProgramCache]: Analyzing trace with hash 600977, now seen corresponding path program 1 times [2020-12-22 08:30:25,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:25,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112277123] [2020-12-22 08:30:25,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:26,003 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 08:30:26,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112277123] [2020-12-22 08:30:26,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:26,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:30:26,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860728993] [2020-12-22 08:30:26,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:30:26,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:26,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:30:26,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:30:26,015 INFO L87 Difference]: Start difference. First operand 25989 states and 39268 transitions. Second operand 3 states. [2020-12-22 08:30:28,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:28,657 INFO L93 Difference]: Finished difference Result 72417 states and 108830 transitions. [2020-12-22 08:30:28,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:30:28,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 08:30:28,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:28,760 INFO L225 Difference]: With dead ends: 72417 [2020-12-22 08:30:28,761 INFO L226 Difference]: Without dead ends: 46463 [2020-12-22 08:30:28,798 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 08:30:28,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46463 states. [2020-12-22 08:30:32,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46463 to 46029. [2020-12-22 08:30:32,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46029 states. [2020-12-22 08:30:32,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46029 states to 46029 states and 68300 transitions. [2020-12-22 08:30:32,469 INFO L78 Accepts]: Start accepts. Automaton has 46029 states and 68300 transitions. Word has length 68 [2020-12-22 08:30:32,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:32,470 INFO L481 AbstractCegarLoop]: Abstraction has 46029 states and 68300 transitions. [2020-12-22 08:30:32,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:30:32,470 INFO L276 IsEmpty]: Start isEmpty. Operand 46029 states and 68300 transitions. [2020-12-22 08:30:32,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:30:32,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:32,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:30:32,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:30:32,472 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:32,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:32,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1651692121, now seen corresponding path program 1 times [2020-12-22 08:30:32,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:32,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616337089] [2020-12-22 08:30:32,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:32,521 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 08:30:32,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616337089] [2020-12-22 08:30:32,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:32,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:30:32,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650767713] [2020-12-22 08:30:32,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:30:32,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:32,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:30:32,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:30:32,524 INFO L87 Difference]: Start difference. First operand 46029 states and 68300 transitions. Second operand 3 states. [2020-12-22 08:30:36,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:36,619 INFO L93 Difference]: Finished difference Result 91700 states and 136690 transitions. [2020-12-22 08:30:36,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:30:36,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 08:30:36,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:36,827 INFO L225 Difference]: With dead ends: 91700 [2020-12-22 08:30:36,827 INFO L226 Difference]: Without dead ends: 65745 [2020-12-22 08:30:36,876 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 08:30:36,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65745 states. [2020-12-22 08:30:41,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65745 to 65743. [2020-12-22 08:30:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65743 states. [2020-12-22 08:30:41,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65743 states to 65743 states and 96974 transitions. [2020-12-22 08:30:41,471 INFO L78 Accepts]: Start accepts. Automaton has 65743 states and 96974 transitions. Word has length 68 [2020-12-22 08:30:41,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:41,472 INFO L481 AbstractCegarLoop]: Abstraction has 65743 states and 96974 transitions. [2020-12-22 08:30:41,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:30:41,472 INFO L276 IsEmpty]: Start isEmpty. Operand 65743 states and 96974 transitions. [2020-12-22 08:30:41,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 08:30:41,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:41,493 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:30:41,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:30:41,493 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:41,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:41,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1604732899, now seen corresponding path program 1 times [2020-12-22 08:30:41,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:41,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937539106] [2020-12-22 08:30:41,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:41,611 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 08:30:41,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937539106] [2020-12-22 08:30:41,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:41,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:30:41,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500878254] [2020-12-22 08:30:41,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:30:41,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:41,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:30:41,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:30:41,614 INFO L87 Difference]: Start difference. First operand 65743 states and 96974 transitions. Second operand 7 states. [2020-12-22 08:30:50,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:50,138 INFO L93 Difference]: Finished difference Result 155651 states and 231708 transitions. [2020-12-22 08:30:50,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:30:50,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-22 08:30:50,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:50,314 INFO L225 Difference]: With dead ends: 155651 [2020-12-22 08:30:50,314 INFO L226 Difference]: Without dead ends: 127785 [2020-12-22 08:30:50,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:30:50,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127785 states. [2020-12-22 08:30:57,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127785 to 91103. [2020-12-22 08:30:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91103 states. [2020-12-22 08:30:57,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91103 states to 91103 states and 134382 transitions. [2020-12-22 08:30:57,872 INFO L78 Accepts]: Start accepts. Automaton has 91103 states and 134382 transitions. Word has length 94 [2020-12-22 08:30:57,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:57,872 INFO L481 AbstractCegarLoop]: Abstraction has 91103 states and 134382 transitions. [2020-12-22 08:30:57,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:30:57,873 INFO L276 IsEmpty]: Start isEmpty. Operand 91103 states and 134382 transitions. [2020-12-22 08:30:57,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 08:30:57,893 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:57,893 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:30:57,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:30:57,894 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:57,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:57,894 INFO L82 PathProgramCache]: Analyzing trace with hash -584746122, now seen corresponding path program 1 times [2020-12-22 08:30:57,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:57,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192398601] [2020-12-22 08:30:57,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:57,954 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:30:57,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192398601] [2020-12-22 08:30:57,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:57,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:30:57,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809649365] [2020-12-22 08:30:57,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:30:57,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:57,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:30:57,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:30:57,957 INFO L87 Difference]: Start difference. First operand 91103 states and 134382 transitions. Second operand 3 states. [2020-12-22 08:31:08,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:08,393 INFO L93 Difference]: Finished difference Result 201057 states and 296232 transitions. [2020-12-22 08:31:08,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:08,395 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-22 08:31:08,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:08,604 INFO L225 Difference]: With dead ends: 201057 [2020-12-22 08:31:08,604 INFO L226 Difference]: Without dead ends: 137263 [2020-12-22 08:31:08,672 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 08:31:08,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137263 states. [2020-12-22 08:31:18,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137263 to 131933. [2020-12-22 08:31:18,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131933 states. [2020-12-22 08:31:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131933 states to 131933 states and 192646 transitions. [2020-12-22 08:31:19,089 INFO L78 Accepts]: Start accepts. Automaton has 131933 states and 192646 transitions. Word has length 94 [2020-12-22 08:31:19,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:19,089 INFO L481 AbstractCegarLoop]: Abstraction has 131933 states and 192646 transitions. [2020-12-22 08:31:19,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:19,089 INFO L276 IsEmpty]: Start isEmpty. Operand 131933 states and 192646 transitions. [2020-12-22 08:31:19,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 08:31:19,113 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:19,114 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:19,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:31:19,114 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:19,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:19,115 INFO L82 PathProgramCache]: Analyzing trace with hash 366763059, now seen corresponding path program 1 times [2020-12-22 08:31:19,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:19,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821492996] [2020-12-22 08:31:19,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:19,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821492996] [2020-12-22 08:31:19,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:19,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:19,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050762181] [2020-12-22 08:31:19,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:19,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:19,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:19,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:19,177 INFO L87 Difference]: Start difference. First operand 131933 states and 192646 transitions. Second operand 3 states. [2020-12-22 08:31:33,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:33,096 INFO L93 Difference]: Finished difference Result 266372 states and 387789 transitions. [2020-12-22 08:31:33,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:33,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-22 08:31:33,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:33,572 INFO L225 Difference]: With dead ends: 266372 [2020-12-22 08:31:33,572 INFO L226 Difference]: Without dead ends: 183474 [2020-12-22 08:31:33,652 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 08:31:33,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183474 states. [2020-12-22 08:31:47,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183474 to 175540. [2020-12-22 08:31:47,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175540 states. [2020-12-22 08:31:48,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175540 states to 175540 states and 253331 transitions. [2020-12-22 08:31:48,391 INFO L78 Accepts]: Start accepts. Automaton has 175540 states and 253331 transitions. Word has length 94 [2020-12-22 08:31:48,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:48,391 INFO L481 AbstractCegarLoop]: Abstraction has 175540 states and 253331 transitions. [2020-12-22 08:31:48,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:48,391 INFO L276 IsEmpty]: Start isEmpty. Operand 175540 states and 253331 transitions. [2020-12-22 08:31:48,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 08:31:48,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:48,444 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:48,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:31:48,444 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:48,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:48,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1509919718, now seen corresponding path program 1 times [2020-12-22 08:31:48,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:48,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914213852] [2020-12-22 08:31:48,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:48,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914213852] [2020-12-22 08:31:48,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:48,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:48,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967256708] [2020-12-22 08:31:48,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:48,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:48,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:48,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:48,526 INFO L87 Difference]: Start difference. First operand 175540 states and 253331 transitions. Second operand 3 states. [2020-12-22 08:32:04,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:04,070 INFO L93 Difference]: Finished difference Result 282102 states and 405291 transitions. [2020-12-22 08:32:04,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:04,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-22 08:32:04,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:04,526 INFO L225 Difference]: With dead ends: 282102 [2020-12-22 08:32:04,526 INFO L226 Difference]: Without dead ends: 183332 [2020-12-22 08:32:04,647 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 08:32:04,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183332 states. [2020-12-22 08:32:18,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183332 to 174776. [2020-12-22 08:32:18,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174776 states. [2020-12-22 08:32:19,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174776 states to 174776 states and 249061 transitions. [2020-12-22 08:32:19,306 INFO L78 Accepts]: Start accepts. Automaton has 174776 states and 249061 transitions. Word has length 94 [2020-12-22 08:32:19,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:19,307 INFO L481 AbstractCegarLoop]: Abstraction has 174776 states and 249061 transitions. [2020-12-22 08:32:19,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:32:19,307 INFO L276 IsEmpty]: Start isEmpty. Operand 174776 states and 249061 transitions. [2020-12-22 08:32:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 08:32:19,328 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:19,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:19,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:32:19,328 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:19,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:19,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1228523278, now seen corresponding path program 1 times [2020-12-22 08:32:19,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:19,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584831782] [2020-12-22 08:32:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 08:32:19,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584831782] [2020-12-22 08:32:19,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:19,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:32:19,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578476368] [2020-12-22 08:32:19,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:32:19,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:19,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:32:19,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:32:19,734 INFO L87 Difference]: Start difference. First operand 174776 states and 249061 transitions. Second operand 5 states.