/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_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:08:19,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:08:19,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:08:19,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:08:19,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:08:19,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:08:19,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:08:19,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:08:19,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:08:19,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:08:19,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:08:19,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:08:19,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:08:19,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:08:19,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:08:19,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:08:19,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:08:19,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:08:19,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:08:19,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:08:19,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:08:19,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:08:19,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:08:19,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:08:19,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:08:19,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:08:19,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:08:19,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:08:19,944 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:08:19,988 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:08:19,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:08:19,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:08:19,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:08:19,994 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:08:19,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:08:19,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:08:19,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:08:19,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:08:19,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:08:19,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:08:19,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:08:19,996 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:08:19,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:08:19,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:08:19,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:08:19,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:08:19,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:08:19,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:08:19,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:08:19,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:08:19,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:08:19,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:08:19,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:08:19,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:08:19,999 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:08:20,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:08:20,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:08:20,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:08:20,444 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:08:20,447 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:08:20,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-12-22 08:08:20,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c9f0da1/8fe58cc998c348628c8a50c476f413cc/FLAG662d737fd [2020-12-22 08:08:21,379 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:08:21,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-12-22 08:08:21,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c9f0da1/8fe58cc998c348628c8a50c476f413cc/FLAG662d737fd [2020-12-22 08:08:21,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c9f0da1/8fe58cc998c348628c8a50c476f413cc [2020-12-22 08:08:21,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:08:21,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:08:21,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:08:21,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:08:21,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:08:21,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:08:21" (1/1) ... [2020-12-22 08:08:21,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e81ad39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:21, skipping insertion in model container [2020-12-22 08:08:21,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:08:21" (1/1) ... [2020-12-22 08:08:21,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:08:21,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:08:22,184 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_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[24110,24123] [2020-12-22 08:08:22,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:08:22,471 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:08:22,782 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_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[24110,24123] [2020-12-22 08:08:22,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:08:22,911 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:08:22,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:22 WrapperNode [2020-12-22 08:08:22,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:08:22,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:08:22,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:08:22,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:08:22,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:22" (1/1) ... [2020-12-22 08:08:22,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:22" (1/1) ... [2020-12-22 08:08:23,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:08:23,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:08:23,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:08:23,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:08:23,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:22" (1/1) ... [2020-12-22 08:08:23,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:22" (1/1) ... [2020-12-22 08:08:23,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:22" (1/1) ... [2020-12-22 08:08:23,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:22" (1/1) ... [2020-12-22 08:08:23,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:22" (1/1) ... [2020-12-22 08:08:23,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:22" (1/1) ... [2020-12-22 08:08:23,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:22" (1/1) ... [2020-12-22 08:08:23,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:08:23,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:08:23,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:08:23,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:08:23,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:22" (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 08:08:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:08:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:08:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:08:23,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:08:25,432 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:08:25,432 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:08:25,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:08:25 BoogieIcfgContainer [2020-12-22 08:08:25,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:08:25,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:08:25,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:08:25,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:08:25,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:08:21" (1/3) ... [2020-12-22 08:08:25,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca255ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:08:25, skipping insertion in model container [2020-12-22 08:08:25,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:22" (2/3) ... [2020-12-22 08:08:25,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca255ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:08:25, skipping insertion in model container [2020-12-22 08:08:25,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:08:25" (3/3) ... [2020-12-22 08:08:25,444 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-12-22 08:08:25,451 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:08:25,457 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:08:25,476 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:08:25,508 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:08:25,508 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:08:25,508 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:08:25,508 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:08:25,508 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:08:25,509 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:08:25,509 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:08:25,509 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:08:25,543 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states. [2020-12-22 08:08:25,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-12-22 08:08:25,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:25,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:08:25,583 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:25,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:25,592 INFO L82 PathProgramCache]: Analyzing trace with hash 912319734, now seen corresponding path program 1 times [2020-12-22 08:08:25,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:25,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767135841] [2020-12-22 08:08:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:26,484 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 08:08:26,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767135841] [2020-12-22 08:08:26,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:26,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:08:26,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014823655] [2020-12-22 08:08:26,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:08:26,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:26,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:08:26,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:08:26,511 INFO L87 Difference]: Start difference. First operand 581 states. Second operand 3 states. [2020-12-22 08:08:26,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:26,869 INFO L93 Difference]: Finished difference Result 1051 states and 1863 transitions. [2020-12-22 08:08:26,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:08:26,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2020-12-22 08:08:26,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:26,927 INFO L225 Difference]: With dead ends: 1051 [2020-12-22 08:08:26,927 INFO L226 Difference]: Without dead ends: 878 [2020-12-22 08:08:26,932 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 08:08:26,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-12-22 08:08:27,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 876. [2020-12-22 08:08:27,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2020-12-22 08:08:27,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1379 transitions. [2020-12-22 08:08:27,054 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1379 transitions. Word has length 234 [2020-12-22 08:08:27,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:27,055 INFO L481 AbstractCegarLoop]: Abstraction has 876 states and 1379 transitions. [2020-12-22 08:08:27,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:08:27,055 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1379 transitions. [2020-12-22 08:08:27,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-12-22 08:08:27,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:27,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:08:27,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:08:27,067 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:27,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:27,068 INFO L82 PathProgramCache]: Analyzing trace with hash -70671080, now seen corresponding path program 1 times [2020-12-22 08:08:27,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:27,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150696818] [2020-12-22 08:08:27,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:27,906 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 08:08:27,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150696818] [2020-12-22 08:08:27,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:27,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:08:27,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955745471] [2020-12-22 08:08:27,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:08:27,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:27,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:08:27,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:08:27,913 INFO L87 Difference]: Start difference. First operand 876 states and 1379 transitions. Second operand 4 states. [2020-12-22 08:08:28,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:28,156 INFO L93 Difference]: Finished difference Result 2582 states and 4060 transitions. [2020-12-22 08:08:28,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:08:28,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 234 [2020-12-22 08:08:28,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:28,170 INFO L225 Difference]: With dead ends: 2582 [2020-12-22 08:08:28,170 INFO L226 Difference]: Without dead ends: 1717 [2020-12-22 08:08:28,178 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 08:08:28,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2020-12-22 08:08:28,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1715. [2020-12-22 08:08:28,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1715 states. [2020-12-22 08:08:28,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2682 transitions. [2020-12-22 08:08:28,287 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2682 transitions. Word has length 234 [2020-12-22 08:08:28,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:28,289 INFO L481 AbstractCegarLoop]: Abstraction has 1715 states and 2682 transitions. [2020-12-22 08:08:28,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:08:28,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2682 transitions. [2020-12-22 08:08:28,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-12-22 08:08:28,296 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:28,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:08:28,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:08:28,297 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:28,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:28,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1281083139, now seen corresponding path program 1 times [2020-12-22 08:08:28,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:28,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790162407] [2020-12-22 08:08:28,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:28,609 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 08:08:28,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790162407] [2020-12-22 08:08:28,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:28,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:08:28,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690494965] [2020-12-22 08:08:28,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:08:28,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:28,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:08:28,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:08:28,619 INFO L87 Difference]: Start difference. First operand 1715 states and 2682 transitions. Second operand 3 states. [2020-12-22 08:08:28,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:28,949 INFO L93 Difference]: Finished difference Result 4958 states and 7722 transitions. [2020-12-22 08:08:28,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:08:28,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2020-12-22 08:08:28,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:28,976 INFO L225 Difference]: With dead ends: 4958 [2020-12-22 08:08:28,977 INFO L226 Difference]: Without dead ends: 3368 [2020-12-22 08:08:28,981 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 08:08:28,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2020-12-22 08:08:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 3366. [2020-12-22 08:08:29,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3366 states. [2020-12-22 08:08:29,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3366 states to 3366 states and 5235 transitions. [2020-12-22 08:08:29,229 INFO L78 Accepts]: Start accepts. Automaton has 3366 states and 5235 transitions. Word has length 236 [2020-12-22 08:08:29,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:29,237 INFO L481 AbstractCegarLoop]: Abstraction has 3366 states and 5235 transitions. [2020-12-22 08:08:29,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:08:29,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3366 states and 5235 transitions. [2020-12-22 08:08:29,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-12-22 08:08:29,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:29,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:08:29,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:08:29,248 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:29,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:29,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1522783160, now seen corresponding path program 1 times [2020-12-22 08:08:29,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:29,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091880926] [2020-12-22 08:08:29,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:29,394 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 08:08:29,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091880926] [2020-12-22 08:08:29,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:29,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:08:29,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331546283] [2020-12-22 08:08:29,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:08:29,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:29,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:08:29,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:08:29,400 INFO L87 Difference]: Start difference. First operand 3366 states and 5235 transitions. Second operand 3 states. [2020-12-22 08:08:29,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:29,762 INFO L93 Difference]: Finished difference Result 10031 states and 15589 transitions. [2020-12-22 08:08:29,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:08:29,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2020-12-22 08:08:29,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:29,799 INFO L225 Difference]: With dead ends: 10031 [2020-12-22 08:08:29,799 INFO L226 Difference]: Without dead ends: 6703 [2020-12-22 08:08:29,809 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 08:08:29,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6703 states. [2020-12-22 08:08:30,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6703 to 3385. [2020-12-22 08:08:30,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3385 states. [2020-12-22 08:08:30,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3385 states to 3385 states and 5263 transitions. [2020-12-22 08:08:30,147 INFO L78 Accepts]: Start accepts. Automaton has 3385 states and 5263 transitions. Word has length 236 [2020-12-22 08:08:30,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:30,147 INFO L481 AbstractCegarLoop]: Abstraction has 3385 states and 5263 transitions. [2020-12-22 08:08:30,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:08:30,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3385 states and 5263 transitions. [2020-12-22 08:08:30,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-12-22 08:08:30,156 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:30,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:08:30,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:08:30,157 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:30,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:30,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1023572120, now seen corresponding path program 1 times [2020-12-22 08:08:30,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:30,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072290498] [2020-12-22 08:08:30,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:30,308 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 08:08:30,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072290498] [2020-12-22 08:08:30,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:30,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:08:30,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504573947] [2020-12-22 08:08:30,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:08:30,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:30,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:08:30,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:08:30,313 INFO L87 Difference]: Start difference. First operand 3385 states and 5263 transitions. Second operand 3 states. [2020-12-22 08:08:30,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:30,939 INFO L93 Difference]: Finished difference Result 10050 states and 15610 transitions. [2020-12-22 08:08:30,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:08:30,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-12-22 08:08:30,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:30,986 INFO L225 Difference]: With dead ends: 10050 [2020-12-22 08:08:30,987 INFO L226 Difference]: Without dead ends: 6721 [2020-12-22 08:08:30,996 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 08:08:31,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6721 states. [2020-12-22 08:08:31,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 3403. [2020-12-22 08:08:31,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3403 states. [2020-12-22 08:08:31,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 5284 transitions. [2020-12-22 08:08:31,363 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 5284 transitions. Word has length 237 [2020-12-22 08:08:31,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:31,363 INFO L481 AbstractCegarLoop]: Abstraction has 3403 states and 5284 transitions. [2020-12-22 08:08:31,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:08:31,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 5284 transitions. [2020-12-22 08:08:31,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-12-22 08:08:31,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:31,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:08:31,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:08:31,372 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:31,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:31,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1450350274, now seen corresponding path program 1 times [2020-12-22 08:08:31,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:31,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234568059] [2020-12-22 08:08:31,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:31,713 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 08:08:31,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234568059] [2020-12-22 08:08:31,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:31,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:08:31,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553143282] [2020-12-22 08:08:31,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:08:31,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:31,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:08:31,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:08:31,716 INFO L87 Difference]: Start difference. First operand 3403 states and 5284 transitions. Second operand 3 states. [2020-12-22 08:08:32,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:32,291 INFO L93 Difference]: Finished difference Result 9750 states and 15077 transitions. [2020-12-22 08:08:32,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:08:32,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 238 [2020-12-22 08:08:32,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:32,343 INFO L225 Difference]: With dead ends: 9750 [2020-12-22 08:08:32,343 INFO L226 Difference]: Without dead ends: 6588 [2020-12-22 08:08:32,350 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 08:08:32,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6588 states. [2020-12-22 08:08:32,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6588 to 6586. [2020-12-22 08:08:32,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6586 states. [2020-12-22 08:08:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6586 states to 6586 states and 10152 transitions. [2020-12-22 08:08:32,914 INFO L78 Accepts]: Start accepts. Automaton has 6586 states and 10152 transitions. Word has length 238 [2020-12-22 08:08:32,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:32,914 INFO L481 AbstractCegarLoop]: Abstraction has 6586 states and 10152 transitions. [2020-12-22 08:08:32,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:08:32,915 INFO L276 IsEmpty]: Start isEmpty. Operand 6586 states and 10152 transitions. [2020-12-22 08:08:32,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-12-22 08:08:32,931 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:32,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:08:32,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:08:33,008 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:33,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:33,011 INFO L82 PathProgramCache]: Analyzing trace with hash -2126707749, now seen corresponding path program 1 times [2020-12-22 08:08:33,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:33,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231615090] [2020-12-22 08:08:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:33,578 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 08:08:33,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231615090] [2020-12-22 08:08:33,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:33,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:08:33,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518323003] [2020-12-22 08:08:33,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:08:33,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:33,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:08:33,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:08:33,582 INFO L87 Difference]: Start difference. First operand 6586 states and 10152 transitions. Second operand 5 states. [2020-12-22 08:08:34,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:34,749 INFO L93 Difference]: Finished difference Result 19228 states and 29585 transitions. [2020-12-22 08:08:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:08:34,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2020-12-22 08:08:34,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:34,781 INFO L225 Difference]: With dead ends: 19228 [2020-12-22 08:08:34,782 INFO L226 Difference]: Without dead ends: 12697 [2020-12-22 08:08:34,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:08:34,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12697 states. [2020-12-22 08:08:35,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12697 to 12695. [2020-12-22 08:08:35,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12695 states. [2020-12-22 08:08:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12695 states to 12695 states and 19393 transitions. [2020-12-22 08:08:35,885 INFO L78 Accepts]: Start accepts. Automaton has 12695 states and 19393 transitions. Word has length 238 [2020-12-22 08:08:35,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:35,886 INFO L481 AbstractCegarLoop]: Abstraction has 12695 states and 19393 transitions. [2020-12-22 08:08:35,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:08:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 12695 states and 19393 transitions. [2020-12-22 08:08:35,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-12-22 08:08:35,907 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:35,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:08:35,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:08:35,908 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:35,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1275872807, now seen corresponding path program 1 times [2020-12-22 08:08:35,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:35,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455822795] [2020-12-22 08:08:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:36,294 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 08:08:36,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455822795] [2020-12-22 08:08:36,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:36,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:08:36,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524480304] [2020-12-22 08:08:36,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:08:36,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:36,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:08:36,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:08:36,297 INFO L87 Difference]: Start difference. First operand 12695 states and 19393 transitions. Second operand 5 states. [2020-12-22 08:08:38,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:38,482 INFO L93 Difference]: Finished difference Result 37294 states and 56896 transitions. [2020-12-22 08:08:38,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:08:38,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 240 [2020-12-22 08:08:38,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:38,545 INFO L225 Difference]: With dead ends: 37294 [2020-12-22 08:08:38,545 INFO L226 Difference]: Without dead ends: 24716 [2020-12-22 08:08:38,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:08:38,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24716 states. [2020-12-22 08:08:40,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24716 to 24714. [2020-12-22 08:08:40,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24714 states. [2020-12-22 08:08:40,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24714 states to 24714 states and 37452 transitions. [2020-12-22 08:08:40,298 INFO L78 Accepts]: Start accepts. Automaton has 24714 states and 37452 transitions. Word has length 240 [2020-12-22 08:08:40,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:40,299 INFO L481 AbstractCegarLoop]: Abstraction has 24714 states and 37452 transitions. [2020-12-22 08:08:40,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:08:40,299 INFO L276 IsEmpty]: Start isEmpty. Operand 24714 states and 37452 transitions. [2020-12-22 08:08:40,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-12-22 08:08:40,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:40,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:08:40,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:08:40,342 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:40,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:40,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1140695391, now seen corresponding path program 1 times [2020-12-22 08:08:40,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:40,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838468234] [2020-12-22 08:08:40,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:40,904 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 08:08:40,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838468234] [2020-12-22 08:08:40,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:40,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:08:40,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639979332] [2020-12-22 08:08:40,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:08:40,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:40,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:08:40,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:08:40,913 INFO L87 Difference]: Start difference. First operand 24714 states and 37452 transitions. Second operand 4 states. [2020-12-22 08:08:43,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:43,954 INFO L93 Difference]: Finished difference Result 72780 states and 110137 transitions. [2020-12-22 08:08:43,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:08:43,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-12-22 08:08:43,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:44,055 INFO L225 Difference]: With dead ends: 72780 [2020-12-22 08:08:44,056 INFO L226 Difference]: Without dead ends: 48296 [2020-12-22 08:08:44,090 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 08:08:44,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48296 states. [2020-12-22 08:08:46,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48296 to 48294. [2020-12-22 08:08:46,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48294 states. [2020-12-22 08:08:47,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48294 states to 48294 states and 72600 transitions. [2020-12-22 08:08:47,002 INFO L78 Accepts]: Start accepts. Automaton has 48294 states and 72600 transitions. Word has length 240 [2020-12-22 08:08:47,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:47,002 INFO L481 AbstractCegarLoop]: Abstraction has 48294 states and 72600 transitions. [2020-12-22 08:08:47,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:08:47,002 INFO L276 IsEmpty]: Start isEmpty. Operand 48294 states and 72600 transitions. [2020-12-22 08:08:47,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-12-22 08:08:47,113 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:47,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:08:47,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:08:47,114 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:47,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:47,114 INFO L82 PathProgramCache]: Analyzing trace with hash -648496959, now seen corresponding path program 1 times [2020-12-22 08:08:47,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:47,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546489228] [2020-12-22 08:08:47,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:47,412 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 08:08:47,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546489228] [2020-12-22 08:08:47,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:47,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:08:47,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270055304] [2020-12-22 08:08:47,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:08:47,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:47,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:08:47,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:08:47,415 INFO L87 Difference]: Start difference. First operand 48294 states and 72600 transitions. Second operand 3 states. [2020-12-22 08:08:52,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:52,039 INFO L93 Difference]: Finished difference Result 141594 states and 212368 transitions. [2020-12-22 08:08:52,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:08:52,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2020-12-22 08:08:52,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:52,261 INFO L225 Difference]: With dead ends: 141594 [2020-12-22 08:08:52,261 INFO L226 Difference]: Without dead ends: 94680 [2020-12-22 08:08:52,331 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 08:08:52,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94680 states. [2020-12-22 08:08:57,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94680 to 94678. [2020-12-22 08:08:57,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94678 states. [2020-12-22 08:08:57,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94678 states to 94678 states and 141270 transitions. [2020-12-22 08:08:57,932 INFO L78 Accepts]: Start accepts. Automaton has 94678 states and 141270 transitions. Word has length 242 [2020-12-22 08:08:57,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:57,932 INFO L481 AbstractCegarLoop]: Abstraction has 94678 states and 141270 transitions. [2020-12-22 08:08:57,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:08:57,933 INFO L276 IsEmpty]: Start isEmpty. Operand 94678 states and 141270 transitions. [2020-12-22 08:08:58,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-12-22 08:08:58,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:58,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:08:58,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:08:58,038 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:58,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:58,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1722529222, now seen corresponding path program 1 times [2020-12-22 08:08:58,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:58,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924556524] [2020-12-22 08:08:58,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:58,144 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 08:08:58,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924556524] [2020-12-22 08:08:58,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:58,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:08:58,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352916245] [2020-12-22 08:08:58,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:08:58,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:58,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:08:58,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:08:58,148 INFO L87 Difference]: Start difference. First operand 94678 states and 141270 transitions. Second operand 3 states. [2020-12-22 08:09:07,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:07,489 INFO L93 Difference]: Finished difference Result 282910 states and 421986 transitions. [2020-12-22 08:09:07,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:09:07,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2020-12-22 08:09:07,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:07,996 INFO L225 Difference]: With dead ends: 282910 [2020-12-22 08:09:07,996 INFO L226 Difference]: Without dead ends: 188894 [2020-12-22 08:09:08,104 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 08:09:08,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188894 states. [2020-12-22 08:09:14,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188894 to 94888. [2020-12-22 08:09:14,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94888 states. [2020-12-22 08:09:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94888 states to 94888 states and 141582 transitions. [2020-12-22 08:09:14,929 INFO L78 Accepts]: Start accepts. Automaton has 94888 states and 141582 transitions. Word has length 242 [2020-12-22 08:09:14,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:09:14,929 INFO L481 AbstractCegarLoop]: Abstraction has 94888 states and 141582 transitions. [2020-12-22 08:09:14,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:09:14,930 INFO L276 IsEmpty]: Start isEmpty. Operand 94888 states and 141582 transitions. [2020-12-22 08:09:15,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-12-22 08:09:15,019 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:15,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:15,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:09:15,020 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:15,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:15,020 INFO L82 PathProgramCache]: Analyzing trace with hash -106410204, now seen corresponding path program 1 times [2020-12-22 08:09:15,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:15,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469005322] [2020-12-22 08:09:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:09:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:09:15,375 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 08:09:15,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469005322] [2020-12-22 08:09:15,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:09:15,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:09:15,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389588254] [2020-12-22 08:09:15,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:09:15,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:09:15,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:09:15,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:09:15,385 INFO L87 Difference]: Start difference. First operand 94888 states and 141582 transitions. Second operand 3 states. [2020-12-22 08:09:25,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:25,130 INFO L93 Difference]: Finished difference Result 283098 states and 422192 transitions. [2020-12-22 08:09:25,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:09:25,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 243 [2020-12-22 08:09:25,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:25,447 INFO L225 Difference]: With dead ends: 283098 [2020-12-22 08:09:25,448 INFO L226 Difference]: Without dead ends: 189072 [2020-12-22 08:09:25,538 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 08:09:25,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189072 states. [2020-12-22 08:09:32,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189072 to 95118. [2020-12-22 08:09:32,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95118 states. [2020-12-22 08:09:32,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95118 states to 95118 states and 141846 transitions. [2020-12-22 08:09:32,633 INFO L78 Accepts]: Start accepts. Automaton has 95118 states and 141846 transitions. Word has length 243 [2020-12-22 08:09:32,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:09:32,634 INFO L481 AbstractCegarLoop]: Abstraction has 95118 states and 141846 transitions. [2020-12-22 08:09:32,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:09:32,634 INFO L276 IsEmpty]: Start isEmpty. Operand 95118 states and 141846 transitions. [2020-12-22 08:09:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-12-22 08:09:32,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:32,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:32,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:09:32,910 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:32,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:32,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2050277543, now seen corresponding path program 1 times [2020-12-22 08:09:32,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:32,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225335408] [2020-12-22 08:09:32,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:09:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:09:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:09:33,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225335408] [2020-12-22 08:09:33,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:09:33,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:09:33,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23302645] [2020-12-22 08:09:33,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:09:33,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:09:33,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:09:33,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:09:33,311 INFO L87 Difference]: Start difference. First operand 95118 states and 141846 transitions. Second operand 5 states. [2020-12-22 08:09:44,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:44,726 INFO L93 Difference]: Finished difference Result 279197 states and 415671 transitions. [2020-12-22 08:09:44,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:09:44,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-12-22 08:09:44,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:45,028 INFO L225 Difference]: With dead ends: 279197 [2020-12-22 08:09:45,028 INFO L226 Difference]: Without dead ends: 184660 [2020-12-22 08:09:45,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:09:45,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184660 states. [2020-12-22 08:09:57,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184660 to 184658. [2020-12-22 08:09:57,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184658 states. [2020-12-22 08:09:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184658 states to 184658 states and 272860 transitions. [2020-12-22 08:09:58,594 INFO L78 Accepts]: Start accepts. Automaton has 184658 states and 272860 transitions. Word has length 244 [2020-12-22 08:09:58,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:09:58,595 INFO L481 AbstractCegarLoop]: Abstraction has 184658 states and 272860 transitions. [2020-12-22 08:09:58,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:09:58,595 INFO L276 IsEmpty]: Start isEmpty. Operand 184658 states and 272860 transitions. [2020-12-22 08:09:58,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-12-22 08:09:58,767 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:58,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:58,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:09:58,767 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:58,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:58,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1995922805, now seen corresponding path program 1 times [2020-12-22 08:09:58,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:58,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448391509] [2020-12-22 08:09:58,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:09:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:09:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:09:59,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448391509] [2020-12-22 08:09:59,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:09:59,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:09:59,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73029223] [2020-12-22 08:09:59,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:09:59,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:09:59,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:09:59,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:09:59,156 INFO L87 Difference]: Start difference. First operand 184658 states and 272860 transitions. Second operand 4 states. [2020-12-22 08:10:13,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:10:13,252 INFO L93 Difference]: Finished difference Result 388551 states and 573866 transitions. [2020-12-22 08:10:13,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:10:13,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 246 [2020-12-22 08:10:13,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:10:13,767 INFO L225 Difference]: With dead ends: 388551 [2020-12-22 08:10:13,767 INFO L226 Difference]: Without dead ends: 205511 [2020-12-22 08:10:13,941 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 08:10:14,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205511 states. [2020-12-22 08:10:27,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205511 to 184893. [2020-12-22 08:10:27,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184893 states. [2020-12-22 08:10:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184893 states to 184893 states and 273046 transitions. [2020-12-22 08:10:27,592 INFO L78 Accepts]: Start accepts. Automaton has 184893 states and 273046 transitions. Word has length 246 [2020-12-22 08:10:27,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:10:27,592 INFO L481 AbstractCegarLoop]: Abstraction has 184893 states and 273046 transitions. [2020-12-22 08:10:27,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:10:27,592 INFO L276 IsEmpty]: Start isEmpty. Operand 184893 states and 273046 transitions. [2020-12-22 08:10:27,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-12-22 08:10:27,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:10:27,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:10:27,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:10:27,727 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:10:27,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:10:27,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1124572823, now seen corresponding path program 1 times [2020-12-22 08:10:27,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:10:27,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502860025] [2020-12-22 08:10:27,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:10:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:10:28,271 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 08:10:28,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502860025] [2020-12-22 08:10:28,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:10:28,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:10:28,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713050072] [2020-12-22 08:10:28,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:10:28,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:10:28,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:10:28,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:10:28,278 INFO L87 Difference]: Start difference. First operand 184893 states and 273046 transitions. Second operand 3 states. [2020-12-22 08:10:52,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:10:52,417 INFO L93 Difference]: Finished difference Result 548335 states and 809159 transitions. [2020-12-22 08:10:52,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:10:52,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 248 [2020-12-22 08:10:52,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:10:53,330 INFO L225 Difference]: With dead ends: 548335 [2020-12-22 08:10:53,331 INFO L226 Difference]: Without dead ends: 365920 [2020-12-22 08:10:53,629 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 08:10:54,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365920 states. [2020-12-22 08:11:11,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365920 to 185366. [2020-12-22 08:11:11,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185366 states. [2020-12-22 08:11:12,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185366 states to 185366 states and 273627 transitions. [2020-12-22 08:11:12,346 INFO L78 Accepts]: Start accepts. Automaton has 185366 states and 273627 transitions. Word has length 248 [2020-12-22 08:11:12,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:12,346 INFO L481 AbstractCegarLoop]: Abstraction has 185366 states and 273627 transitions. [2020-12-22 08:11:12,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:11:12,347 INFO L276 IsEmpty]: Start isEmpty. Operand 185366 states and 273627 transitions. [2020-12-22 08:11:12,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-12-22 08:11:12,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:12,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:12,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:11:12,497 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:12,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:12,498 INFO L82 PathProgramCache]: Analyzing trace with hash -764706277, now seen corresponding path program 1 times [2020-12-22 08:11:12,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:12,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637036743] [2020-12-22 08:11:12,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:12,605 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 08:11:12,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637036743] [2020-12-22 08:11:12,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:12,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:11:12,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222613954] [2020-12-22 08:11:12,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:11:12,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:12,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:11:12,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:12,608 INFO L87 Difference]: Start difference. First operand 185366 states and 273627 transitions. Second operand 3 states. [2020-12-22 08:11:39,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:39,594 INFO L93 Difference]: Finished difference Result 550754 states and 812718 transitions. [2020-12-22 08:11:39,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:11:39,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 249 [2020-12-22 08:11:39,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:40,440 INFO L225 Difference]: With dead ends: 550754 [2020-12-22 08:11:40,440 INFO L226 Difference]: Without dead ends: 367977 [2020-12-22 08:11:40,658 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 08:11:40,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367977 states. [2020-12-22 08:11:58,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367977 to 186051. [2020-12-22 08:11:58,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186051 states. [2020-12-22 08:11:59,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186051 states to 186051 states and 274431 transitions. [2020-12-22 08:11:59,021 INFO L78 Accepts]: Start accepts. Automaton has 186051 states and 274431 transitions. Word has length 249 [2020-12-22 08:11:59,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:59,021 INFO L481 AbstractCegarLoop]: Abstraction has 186051 states and 274431 transitions. [2020-12-22 08:11:59,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:11:59,022 INFO L276 IsEmpty]: Start isEmpty. Operand 186051 states and 274431 transitions. [2020-12-22 08:11:59,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-12-22 08:11:59,149 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:59,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:59,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:11:59,150 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:59,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:59,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1971875425, now seen corresponding path program 1 times [2020-12-22 08:11:59,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:59,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800340448] [2020-12-22 08:11:59,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:59,336 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 08:11:59,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800340448] [2020-12-22 08:11:59,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:59,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:11:59,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477678589] [2020-12-22 08:11:59,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:11:59,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:59,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:11:59,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:59,338 INFO L87 Difference]: Start difference. First operand 186051 states and 274431 transitions. Second operand 3 states.