/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/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:17:37,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:17:37,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:17:37,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:17:37,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:17:37,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:17:37,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:17:37,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:17:37,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:17:37,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:17:37,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:17:37,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:17:37,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:17:37,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:17:37,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:17:37,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:17:37,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:17:37,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:17:37,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:17:37,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:17:37,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:17:37,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:17:37,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:17:37,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:17:37,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 10:17:37,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 10:17:37,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 10:17:37,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 10:17:37,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 10:17:37,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 10:17:37,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 10:17:37,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 10:17:37,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 10:17:37,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 10:17:37,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 10:17:37,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 10:17:37,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 10:17:37,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 10:17:37,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:17:37,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:17:37,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:17:37,612 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:17:37,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:17:37,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:17:37,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:17:37,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:17:37,669 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:17:37,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:17:37,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:17:37,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:17:37,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:17:37,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:17:37,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:17:37,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:17:37,672 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:17:37,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:17:37,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:17:37,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:17:37,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:17:37,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:17:37,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:17:37,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:17:37,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:17:37,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:17:37,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:17:37,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:17:37,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:17:37,675 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:17:38,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:17:38,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:17:38,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:17:38,116 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:17:38,117 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:17:38,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2020-12-22 10:17:38,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce81de606/c6bcac83a2c6478c9b83fd8ebbbd5469/FLAG3333bfed6 [2020-12-22 10:17:39,298 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:17:39,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2020-12-22 10:17:39,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce81de606/c6bcac83a2c6478c9b83fd8ebbbd5469/FLAG3333bfed6 [2020-12-22 10:17:39,713 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce81de606/c6bcac83a2c6478c9b83fd8ebbbd5469 [2020-12-22 10:17:39,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:17:39,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:17:39,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:17:39,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:17:39,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:17:39,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:17:39" (1/1) ... [2020-12-22 10:17:39,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21fd7ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:39, skipping insertion in model container [2020-12-22 10:17:39,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:17:39" (1/1) ... [2020-12-22 10:17:39,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:17:39,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:17:40,221 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/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[20646,20659] [2020-12-22 10:17:40,302 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/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[27464,27477] [2020-12-22 10:17:41,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:17:41,257 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:17:41,392 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/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[20646,20659] [2020-12-22 10:17:41,409 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/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[27464,27477] [2020-12-22 10:17:42,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:17:42,090 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:17:42,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:42 WrapperNode [2020-12-22 10:17:42,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:17:42,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:17:42,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:17:42,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:17:42,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:42" (1/1) ... [2020-12-22 10:17:42,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:42" (1/1) ... [2020-12-22 10:17:42,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:17:42,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:17:42,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:17:42,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:17:42,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:42" (1/1) ... [2020-12-22 10:17:42,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:42" (1/1) ... [2020-12-22 10:17:42,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:42" (1/1) ... [2020-12-22 10:17:42,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:42" (1/1) ... [2020-12-22 10:17:42,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:42" (1/1) ... [2020-12-22 10:17:42,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:42" (1/1) ... [2020-12-22 10:17:43,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:42" (1/1) ... [2020-12-22 10:17:43,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:17:43,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:17:43,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:17:43,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:17:43,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:42" (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 10:17:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:17:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:17:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:17:43,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:17:48,549 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:17:48,549 INFO L299 CfgBuilder]: Removed 40 assume(true) statements. [2020-12-22 10:17:48,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:17:48 BoogieIcfgContainer [2020-12-22 10:17:48,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:17:48,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:17:48,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:17:48,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:17:48,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:17:39" (1/3) ... [2020-12-22 10:17:48,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a8f856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:17:48, skipping insertion in model container [2020-12-22 10:17:48,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:42" (2/3) ... [2020-12-22 10:17:48,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a8f856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:17:48, skipping insertion in model container [2020-12-22 10:17:48,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:17:48" (3/3) ... [2020-12-22 10:17:48,562 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2020-12-22 10:17:48,570 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:17:48,576 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:17:48,595 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:17:48,631 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:17:48,631 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:17:48,631 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:17:48,631 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:17:48,631 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:17:48,631 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:17:48,632 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:17:48,632 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:17:48,668 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states. [2020-12-22 10:17:48,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 10:17:48,678 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:48,679 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] [2020-12-22 10:17:48,680 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:48,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:48,686 INFO L82 PathProgramCache]: Analyzing trace with hash 720070723, now seen corresponding path program 1 times [2020-12-22 10:17:48,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:48,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136311520] [2020-12-22 10:17:48,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:48,976 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 10:17:48,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136311520] [2020-12-22 10:17:48,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:48,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:17:48,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267990377] [2020-12-22 10:17:48,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 10:17:48,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:49,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 10:17:49,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:17:49,011 INFO L87 Difference]: Start difference. First operand 943 states. Second operand 2 states. [2020-12-22 10:17:49,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:49,104 INFO L93 Difference]: Finished difference Result 1828 states and 3460 transitions. [2020-12-22 10:17:49,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 10:17:49,106 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2020-12-22 10:17:49,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:49,142 INFO L225 Difference]: With dead ends: 1828 [2020-12-22 10:17:49,142 INFO L226 Difference]: Without dead ends: 877 [2020-12-22 10:17:49,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:17:49,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2020-12-22 10:17:49,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 877. [2020-12-22 10:17:49,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-12-22 10:17:49,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1652 transitions. [2020-12-22 10:17:49,267 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1652 transitions. Word has length 42 [2020-12-22 10:17:49,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:49,267 INFO L481 AbstractCegarLoop]: Abstraction has 877 states and 1652 transitions. [2020-12-22 10:17:49,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 10:17:49,267 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1652 transitions. [2020-12-22 10:17:49,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 10:17:49,270 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:49,270 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] [2020-12-22 10:17:49,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:17:49,271 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:49,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:49,272 INFO L82 PathProgramCache]: Analyzing trace with hash 325703937, now seen corresponding path program 1 times [2020-12-22 10:17:49,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:49,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391801112] [2020-12-22 10:17:49,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:49,408 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 10:17:49,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391801112] [2020-12-22 10:17:49,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:49,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:17:49,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842765469] [2020-12-22 10:17:49,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:17:49,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:49,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:17:49,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:17:49,416 INFO L87 Difference]: Start difference. First operand 877 states and 1652 transitions. Second operand 5 states. [2020-12-22 10:17:49,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:49,569 INFO L93 Difference]: Finished difference Result 948 states and 1763 transitions. [2020-12-22 10:17:49,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:17:49,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-12-22 10:17:49,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:49,576 INFO L225 Difference]: With dead ends: 948 [2020-12-22 10:17:49,577 INFO L226 Difference]: Without dead ends: 877 [2020-12-22 10:17:49,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 10:17:49,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2020-12-22 10:17:49,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 877. [2020-12-22 10:17:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-12-22 10:17:49,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1602 transitions. [2020-12-22 10:17:49,624 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1602 transitions. Word has length 42 [2020-12-22 10:17:49,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:49,624 INFO L481 AbstractCegarLoop]: Abstraction has 877 states and 1602 transitions. [2020-12-22 10:17:49,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:17:49,625 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1602 transitions. [2020-12-22 10:17:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 10:17:49,634 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:49,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:17:49,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:17:49,636 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:49,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:49,637 INFO L82 PathProgramCache]: Analyzing trace with hash -766430408, now seen corresponding path program 1 times [2020-12-22 10:17:49,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:49,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958710195] [2020-12-22 10:17:49,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:49,863 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 10:17:49,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958710195] [2020-12-22 10:17:49,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:49,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:17:49,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270786160] [2020-12-22 10:17:49,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:17:49,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:49,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:17:49,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:49,867 INFO L87 Difference]: Start difference. First operand 877 states and 1602 transitions. Second operand 3 states. [2020-12-22 10:17:55,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:55,784 INFO L93 Difference]: Finished difference Result 2381 states and 4475 transitions. [2020-12-22 10:17:55,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:17:55,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 10:17:55,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:55,795 INFO L225 Difference]: With dead ends: 2381 [2020-12-22 10:17:55,795 INFO L226 Difference]: Without dead ends: 1628 [2020-12-22 10:17:55,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 10:17:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2020-12-22 10:17:55,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1628. [2020-12-22 10:17:55,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1628 states. [2020-12-22 10:17:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 2977 transitions. [2020-12-22 10:17:55,845 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 2977 transitions. Word has length 61 [2020-12-22 10:17:55,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:55,846 INFO L481 AbstractCegarLoop]: Abstraction has 1628 states and 2977 transitions. [2020-12-22 10:17:55,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:17:55,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 2977 transitions. [2020-12-22 10:17:55,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:17:55,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:55,848 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] [2020-12-22 10:17:55,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:17:55,848 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:55,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:55,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1207745120, now seen corresponding path program 1 times [2020-12-22 10:17:55,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:55,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847110225] [2020-12-22 10:17:55,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:55,968 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 10:17:55,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847110225] [2020-12-22 10:17:55,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:55,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:17:55,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060509793] [2020-12-22 10:17:55,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:17:55,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:55,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:17:55,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:55,972 INFO L87 Difference]: Start difference. First operand 1628 states and 2977 transitions. Second operand 3 states. [2020-12-22 10:17:56,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:56,022 INFO L93 Difference]: Finished difference Result 1756 states and 3181 transitions. [2020-12-22 10:17:56,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:17:56,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:17:56,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:56,035 INFO L225 Difference]: With dead ends: 1756 [2020-12-22 10:17:56,035 INFO L226 Difference]: Without dead ends: 1689 [2020-12-22 10:17:56,037 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 10:17:56,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2020-12-22 10:17:56,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1687. [2020-12-22 10:17:56,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-12-22 10:17:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3072 transitions. [2020-12-22 10:17:56,080 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 3072 transitions. Word has length 91 [2020-12-22 10:17:56,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:56,081 INFO L481 AbstractCegarLoop]: Abstraction has 1687 states and 3072 transitions. [2020-12-22 10:17:56,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:17:56,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 3072 transitions. [2020-12-22 10:17:56,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:17:56,083 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:56,084 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] [2020-12-22 10:17:56,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:17:56,084 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:56,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:56,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1564953708, now seen corresponding path program 1 times [2020-12-22 10:17:56,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:56,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382962827] [2020-12-22 10:17:56,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:56,232 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 10:17:56,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382962827] [2020-12-22 10:17:56,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:56,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:17:56,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903100450] [2020-12-22 10:17:56,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:17:56,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:56,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:17:56,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:56,237 INFO L87 Difference]: Start difference. First operand 1687 states and 3072 transitions. Second operand 3 states. [2020-12-22 10:17:56,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:56,283 INFO L93 Difference]: Finished difference Result 1927 states and 3456 transitions. [2020-12-22 10:17:56,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:17:56,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:17:56,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:56,294 INFO L225 Difference]: With dead ends: 1927 [2020-12-22 10:17:56,294 INFO L226 Difference]: Without dead ends: 1801 [2020-12-22 10:17:56,296 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 10:17:56,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2020-12-22 10:17:56,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1799. [2020-12-22 10:17:56,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1799 states. [2020-12-22 10:17:56,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 3251 transitions. [2020-12-22 10:17:56,348 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 3251 transitions. Word has length 91 [2020-12-22 10:17:56,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:56,349 INFO L481 AbstractCegarLoop]: Abstraction has 1799 states and 3251 transitions. [2020-12-22 10:17:56,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:17:56,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 3251 transitions. [2020-12-22 10:17:56,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:17:56,350 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:56,350 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] [2020-12-22 10:17:56,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:17:56,350 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:56,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:56,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1479108296, now seen corresponding path program 1 times [2020-12-22 10:17:56,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:56,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078956223] [2020-12-22 10:17:56,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:56,453 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 10:17:56,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078956223] [2020-12-22 10:17:56,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:56,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:17:56,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366478449] [2020-12-22 10:17:56,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:17:56,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:56,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:17:56,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:56,457 INFO L87 Difference]: Start difference. First operand 1799 states and 3251 transitions. Second operand 3 states. [2020-12-22 10:17:56,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:56,516 INFO L93 Difference]: Finished difference Result 2251 states and 3973 transitions. [2020-12-22 10:17:56,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:17:56,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:17:56,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:56,531 INFO L225 Difference]: With dead ends: 2251 [2020-12-22 10:17:56,531 INFO L226 Difference]: Without dead ends: 2013 [2020-12-22 10:17:56,533 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 10:17:56,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2020-12-22 10:17:56,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 2011. [2020-12-22 10:17:56,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2011 states. [2020-12-22 10:17:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 3587 transitions. [2020-12-22 10:17:56,649 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 3587 transitions. Word has length 91 [2020-12-22 10:17:56,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:56,649 INFO L481 AbstractCegarLoop]: Abstraction has 2011 states and 3587 transitions. [2020-12-22 10:17:56,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:17:56,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 3587 transitions. [2020-12-22 10:17:56,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:17:56,651 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:56,651 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] [2020-12-22 10:17:56,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:17:56,652 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:56,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:56,653 INFO L82 PathProgramCache]: Analyzing trace with hash 733525566, now seen corresponding path program 1 times [2020-12-22 10:17:56,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:56,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439738186] [2020-12-22 10:17:56,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:17:56,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439738186] [2020-12-22 10:17:56,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:56,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:17:56,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423951470] [2020-12-22 10:17:56,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:17:56,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:56,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:17:56,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:56,766 INFO L87 Difference]: Start difference. First operand 2011 states and 3587 transitions. Second operand 3 states. [2020-12-22 10:17:56,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:56,825 INFO L93 Difference]: Finished difference Result 2863 states and 4941 transitions. [2020-12-22 10:17:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:17:56,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:17:56,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:56,838 INFO L225 Difference]: With dead ends: 2863 [2020-12-22 10:17:56,838 INFO L226 Difference]: Without dead ends: 2413 [2020-12-22 10:17:56,840 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 10:17:56,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2020-12-22 10:17:56,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2411. [2020-12-22 10:17:56,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2411 states. [2020-12-22 10:17:56,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 4215 transitions. [2020-12-22 10:17:56,907 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 4215 transitions. Word has length 91 [2020-12-22 10:17:56,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:56,907 INFO L481 AbstractCegarLoop]: Abstraction has 2411 states and 4215 transitions. [2020-12-22 10:17:56,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:17:56,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 4215 transitions. [2020-12-22 10:17:56,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:17:56,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:56,909 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] [2020-12-22 10:17:56,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:17:56,909 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:56,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:56,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1206505292, now seen corresponding path program 1 times [2020-12-22 10:17:56,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:56,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503328854] [2020-12-22 10:17:56,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:56,989 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 10:17:56,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503328854] [2020-12-22 10:17:56,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:56,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:17:56,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815629827] [2020-12-22 10:17:56,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:17:56,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:56,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:17:56,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:56,992 INFO L87 Difference]: Start difference. First operand 2411 states and 4215 transitions. Second operand 3 states. [2020-12-22 10:17:57,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:57,081 INFO L93 Difference]: Finished difference Result 4015 states and 6745 transitions. [2020-12-22 10:17:57,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:17:57,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:17:57,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:57,100 INFO L225 Difference]: With dead ends: 4015 [2020-12-22 10:17:57,100 INFO L226 Difference]: Without dead ends: 3165 [2020-12-22 10:17:57,103 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 10:17:57,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3165 states. [2020-12-22 10:17:57,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3165 to 3163. [2020-12-22 10:17:57,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3163 states. [2020-12-22 10:17:57,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 5383 transitions. [2020-12-22 10:17:57,214 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 5383 transitions. Word has length 91 [2020-12-22 10:17:57,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:57,214 INFO L481 AbstractCegarLoop]: Abstraction has 3163 states and 5383 transitions. [2020-12-22 10:17:57,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:17:57,215 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 5383 transitions. [2020-12-22 10:17:57,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:17:57,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:57,216 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] [2020-12-22 10:17:57,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:17:57,216 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:57,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:57,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1494177322, now seen corresponding path program 1 times [2020-12-22 10:17:57,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:57,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717418219] [2020-12-22 10:17:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:57,384 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 10:17:57,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717418219] [2020-12-22 10:17:57,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:57,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:17:57,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715287502] [2020-12-22 10:17:57,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:17:57,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:57,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:17:57,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:17:57,388 INFO L87 Difference]: Start difference. First operand 3163 states and 5383 transitions. Second operand 9 states. [2020-12-22 10:17:58,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:58,720 INFO L93 Difference]: Finished difference Result 25591 states and 40565 transitions. [2020-12-22 10:17:58,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 10:17:58,721 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-12-22 10:17:58,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:58,825 INFO L225 Difference]: With dead ends: 25591 [2020-12-22 10:17:58,825 INFO L226 Difference]: Without dead ends: 23989 [2020-12-22 10:17:58,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2020-12-22 10:17:58,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23989 states. [2020-12-22 10:17:59,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23989 to 4763. [2020-12-22 10:17:59,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4763 states. [2020-12-22 10:17:59,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 7831 transitions. [2020-12-22 10:17:59,284 INFO L78 Accepts]: Start accepts. Automaton has 4763 states and 7831 transitions. Word has length 91 [2020-12-22 10:17:59,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:59,284 INFO L481 AbstractCegarLoop]: Abstraction has 4763 states and 7831 transitions. [2020-12-22 10:17:59,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:17:59,284 INFO L276 IsEmpty]: Start isEmpty. Operand 4763 states and 7831 transitions. [2020-12-22 10:17:59,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 10:17:59,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:59,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:17:59,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:17:59,287 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:59,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:59,288 INFO L82 PathProgramCache]: Analyzing trace with hash -30360326, now seen corresponding path program 1 times [2020-12-22 10:17:59,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:59,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999994299] [2020-12-22 10:17:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:17:59,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999994299] [2020-12-22 10:17:59,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:59,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:17:59,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257738628] [2020-12-22 10:17:59,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:17:59,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:59,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:17:59,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:59,398 INFO L87 Difference]: Start difference. First operand 4763 states and 7831 transitions. Second operand 3 states. [2020-12-22 10:17:59,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:59,716 INFO L93 Difference]: Finished difference Result 9489 states and 15147 transitions. [2020-12-22 10:17:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:17:59,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-22 10:17:59,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:59,736 INFO L225 Difference]: With dead ends: 9489 [2020-12-22 10:17:59,736 INFO L226 Difference]: Without dead ends: 6287 [2020-12-22 10:17:59,744 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 10:17:59,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6287 states. [2020-12-22 10:18:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6287 to 6285. [2020-12-22 10:18:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6285 states. [2020-12-22 10:18:00,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6285 states to 6285 states and 10137 transitions. [2020-12-22 10:18:00,080 INFO L78 Accepts]: Start accepts. Automaton has 6285 states and 10137 transitions. Word has length 93 [2020-12-22 10:18:00,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:18:00,080 INFO L481 AbstractCegarLoop]: Abstraction has 6285 states and 10137 transitions. [2020-12-22 10:18:00,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:18:00,080 INFO L276 IsEmpty]: Start isEmpty. Operand 6285 states and 10137 transitions. [2020-12-22 10:18:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 10:18:00,083 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:18:00,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:18:00,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:18:00,084 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:18:00,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:18:00,085 INFO L82 PathProgramCache]: Analyzing trace with hash 36133186, now seen corresponding path program 1 times [2020-12-22 10:18:00,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:18:00,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090497220] [2020-12-22 10:18:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:18:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:18:00,522 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 10:18:00,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090497220] [2020-12-22 10:18:00,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:18:00,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:18:00,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786643251] [2020-12-22 10:18:00,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:18:00,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:18:00,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:18:00,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:18:00,528 INFO L87 Difference]: Start difference. First operand 6285 states and 10137 transitions. Second operand 9 states. [2020-12-22 10:18:01,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:18:01,336 INFO L93 Difference]: Finished difference Result 11009 states and 17403 transitions. [2020-12-22 10:18:01,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:18:01,336 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-12-22 10:18:01,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:18:01,351 INFO L225 Difference]: With dead ends: 11009 [2020-12-22 10:18:01,352 INFO L226 Difference]: Without dead ends: 6287 [2020-12-22 10:18:01,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2020-12-22 10:18:01,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6287 states. [2020-12-22 10:18:01,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6287 to 6285. [2020-12-22 10:18:01,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6285 states. [2020-12-22 10:18:01,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6285 states to 6285 states and 10089 transitions. [2020-12-22 10:18:01,751 INFO L78 Accepts]: Start accepts. Automaton has 6285 states and 10089 transitions. Word has length 93 [2020-12-22 10:18:01,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:18:01,751 INFO L481 AbstractCegarLoop]: Abstraction has 6285 states and 10089 transitions. [2020-12-22 10:18:01,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:18:01,751 INFO L276 IsEmpty]: Start isEmpty. Operand 6285 states and 10089 transitions. [2020-12-22 10:18:01,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 10:18:01,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:18:01,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:18:01,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:18:01,753 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:18:01,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:18:01,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1825047262, now seen corresponding path program 1 times [2020-12-22 10:18:01,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:18:01,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656211616] [2020-12-22 10:18:01,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:18:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:18:01,841 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 10:18:01,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656211616] [2020-12-22 10:18:01,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:18:01,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:18:01,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688077203] [2020-12-22 10:18:01,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:18:01,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:18:01,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:18:01,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:18:01,844 INFO L87 Difference]: Start difference. First operand 6285 states and 10089 transitions. Second operand 3 states. [2020-12-22 10:18:02,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:18:02,381 INFO L93 Difference]: Finished difference Result 15153 states and 23563 transitions. [2020-12-22 10:18:02,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:18:02,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-22 10:18:02,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:18:02,404 INFO L225 Difference]: With dead ends: 15153 [2020-12-22 10:18:02,404 INFO L226 Difference]: Without dead ends: 10431 [2020-12-22 10:18:02,414 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 10:18:02,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10431 states. [2020-12-22 10:18:03,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10431 to 10429. [2020-12-22 10:18:03,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10429 states. [2020-12-22 10:18:03,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10429 states to 10429 states and 16249 transitions. [2020-12-22 10:18:03,081 INFO L78 Accepts]: Start accepts. Automaton has 10429 states and 16249 transitions. Word has length 93 [2020-12-22 10:18:03,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:18:03,082 INFO L481 AbstractCegarLoop]: Abstraction has 10429 states and 16249 transitions. [2020-12-22 10:18:03,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:18:03,082 INFO L276 IsEmpty]: Start isEmpty. Operand 10429 states and 16249 transitions. [2020-12-22 10:18:03,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 10:18:03,083 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:18:03,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:18:03,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:18:03,084 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:18:03,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:18:03,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1222412418, now seen corresponding path program 1 times [2020-12-22 10:18:03,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:18:03,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602057752] [2020-12-22 10:18:03,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:18:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:18:03,165 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 10:18:03,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602057752] [2020-12-22 10:18:03,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:18:03,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:18:03,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031841789] [2020-12-22 10:18:03,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:18:03,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:18:03,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:18:03,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:18:03,175 INFO L87 Difference]: Start difference. First operand 10429 states and 16249 transitions. Second operand 3 states. [2020-12-22 10:18:04,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:18:04,115 INFO L93 Difference]: Finished difference Result 27009 states and 41083 transitions. [2020-12-22 10:18:04,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:18:04,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-22 10:18:04,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:18:04,154 INFO L225 Difference]: With dead ends: 27009 [2020-12-22 10:18:04,154 INFO L226 Difference]: Without dead ends: 18143 [2020-12-22 10:18:04,171 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 10:18:04,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18143 states. [2020-12-22 10:18:05,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18143 to 18141. [2020-12-22 10:18:05,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18141 states. [2020-12-22 10:18:05,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18141 states to 18141 states and 27513 transitions. [2020-12-22 10:18:05,337 INFO L78 Accepts]: Start accepts. Automaton has 18141 states and 27513 transitions. Word has length 93 [2020-12-22 10:18:05,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:18:05,338 INFO L481 AbstractCegarLoop]: Abstraction has 18141 states and 27513 transitions. [2020-12-22 10:18:05,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:18:05,338 INFO L276 IsEmpty]: Start isEmpty. Operand 18141 states and 27513 transitions. [2020-12-22 10:18:05,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 10:18:05,339 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:18:05,339 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] [2020-12-22 10:18:05,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:18:05,340 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:18:05,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:18:05,340 INFO L82 PathProgramCache]: Analyzing trace with hash 705405902, now seen corresponding path program 1 times [2020-12-22 10:18:05,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:18:05,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25753167] [2020-12-22 10:18:05,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:18:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:18:05,439 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 10:18:05,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25753167] [2020-12-22 10:18:05,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:18:05,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:18:05,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545175865] [2020-12-22 10:18:05,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:18:05,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:18:05,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:18:05,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:18:05,442 INFO L87 Difference]: Start difference. First operand 18141 states and 27513 transitions. Second operand 6 states. [2020-12-22 10:18:06,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:18:06,827 INFO L93 Difference]: Finished difference Result 34719 states and 52154 transitions. [2020-12-22 10:18:06,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:18:06,827 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-12-22 10:18:06,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:18:06,863 INFO L225 Difference]: With dead ends: 34719 [2020-12-22 10:18:06,863 INFO L226 Difference]: Without dead ends: 18141 [2020-12-22 10:18:06,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:18:06,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18141 states. [2020-12-22 10:18:08,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18141 to 18141. [2020-12-22 10:18:08,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18141 states. [2020-12-22 10:18:08,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18141 states to 18141 states and 27257 transitions. [2020-12-22 10:18:08,319 INFO L78 Accepts]: Start accepts. Automaton has 18141 states and 27257 transitions. Word has length 94 [2020-12-22 10:18:08,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:18:08,319 INFO L481 AbstractCegarLoop]: Abstraction has 18141 states and 27257 transitions. [2020-12-22 10:18:08,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:18:08,319 INFO L276 IsEmpty]: Start isEmpty. Operand 18141 states and 27257 transitions. [2020-12-22 10:18:08,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 10:18:08,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:18:08,321 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] [2020-12-22 10:18:08,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:18:08,321 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:18:08,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:18:08,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1549411404, now seen corresponding path program 1 times [2020-12-22 10:18:08,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:18:08,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021667351] [2020-12-22 10:18:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:18:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:18:08,451 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 10:18:08,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021667351] [2020-12-22 10:18:08,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:18:08,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:18:08,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649420806] [2020-12-22 10:18:08,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:18:08,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:18:08,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:18:08,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:18:08,454 INFO L87 Difference]: Start difference. First operand 18141 states and 27257 transitions. Second operand 6 states. [2020-12-22 10:18:09,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:18:09,750 INFO L93 Difference]: Finished difference Result 34719 states and 51642 transitions. [2020-12-22 10:18:09,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:18:09,751 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-12-22 10:18:09,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:18:09,783 INFO L225 Difference]: With dead ends: 34719 [2020-12-22 10:18:09,783 INFO L226 Difference]: Without dead ends: 18141 [2020-12-22 10:18:09,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:18:09,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18141 states. [2020-12-22 10:18:10,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18141 to 18141. [2020-12-22 10:18:10,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18141 states. [2020-12-22 10:18:10,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18141 states to 18141 states and 27065 transitions. [2020-12-22 10:18:10,862 INFO L78 Accepts]: Start accepts. Automaton has 18141 states and 27065 transitions. Word has length 94 [2020-12-22 10:18:10,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:18:10,862 INFO L481 AbstractCegarLoop]: Abstraction has 18141 states and 27065 transitions. [2020-12-22 10:18:10,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:18:10,862 INFO L276 IsEmpty]: Start isEmpty. Operand 18141 states and 27065 transitions. [2020-12-22 10:18:10,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 10:18:10,864 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:18:10,864 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] [2020-12-22 10:18:10,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:18:10,865 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:18:10,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:18:10,865 INFO L82 PathProgramCache]: Analyzing trace with hash 847811530, now seen corresponding path program 1 times [2020-12-22 10:18:10,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:18:10,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88211156] [2020-12-22 10:18:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:18:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:18:10,993 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 10:18:10,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88211156] [2020-12-22 10:18:10,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:18:10,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:18:10,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265353185] [2020-12-22 10:18:10,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:18:10,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:18:10,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:18:10,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:18:10,996 INFO L87 Difference]: Start difference. First operand 18141 states and 27065 transitions. Second operand 8 states. [2020-12-22 10:18:13,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:18:13,397 INFO L93 Difference]: Finished difference Result 32384 states and 47459 transitions. [2020-12-22 10:18:13,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:18:13,397 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-12-22 10:18:13,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:18:13,454 INFO L225 Difference]: With dead ends: 32384 [2020-12-22 10:18:13,454 INFO L226 Difference]: Without dead ends: 32382 [2020-12-22 10:18:13,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:18:13,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32382 states. [2020-12-22 10:18:14,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32382 to 18909. [2020-12-22 10:18:14,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18909 states. [2020-12-22 10:18:14,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18909 states to 18909 states and 27769 transitions. [2020-12-22 10:18:14,746 INFO L78 Accepts]: Start accepts. Automaton has 18909 states and 27769 transitions. Word has length 94 [2020-12-22 10:18:14,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:18:14,747 INFO L481 AbstractCegarLoop]: Abstraction has 18909 states and 27769 transitions. [2020-12-22 10:18:14,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:18:14,747 INFO L276 IsEmpty]: Start isEmpty. Operand 18909 states and 27769 transitions. [2020-12-22 10:18:14,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:18:14,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:18:14,759 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:18:14,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:18:14,760 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:18:14,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:18:14,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1704205326, now seen corresponding path program 1 times [2020-12-22 10:18:14,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:18:14,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704226332] [2020-12-22 10:18:14,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:18:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:18:14,921 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 10:18:14,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704226332] [2020-12-22 10:18:14,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:18:14,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:18:14,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138164934] [2020-12-22 10:18:14,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:18:14,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:18:14,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:18:14,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:18:14,924 INFO L87 Difference]: Start difference. First operand 18909 states and 27769 transitions. Second operand 9 states. [2020-12-22 10:18:21,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:18:21,991 INFO L93 Difference]: Finished difference Result 143725 states and 206753 transitions. [2020-12-22 10:18:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:18:21,992 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 10:18:21,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:18:22,203 INFO L225 Difference]: With dead ends: 143725 [2020-12-22 10:18:22,204 INFO L226 Difference]: Without dead ends: 126379 [2020-12-22 10:18:22,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:18:22,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126379 states. [2020-12-22 10:18:25,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126379 to 36253. [2020-12-22 10:18:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36253 states. [2020-12-22 10:18:25,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36253 states to 36253 states and 52473 transitions. [2020-12-22 10:18:25,667 INFO L78 Accepts]: Start accepts. Automaton has 36253 states and 52473 transitions. Word has length 129 [2020-12-22 10:18:25,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:18:25,667 INFO L481 AbstractCegarLoop]: Abstraction has 36253 states and 52473 transitions. [2020-12-22 10:18:25,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:18:25,668 INFO L276 IsEmpty]: Start isEmpty. Operand 36253 states and 52473 transitions. [2020-12-22 10:18:25,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:18:25,683 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:18:25,683 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:18:25,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:18:25,684 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:18:25,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:18:25,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1343254354, now seen corresponding path program 1 times [2020-12-22 10:18:25,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:18:25,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791748212] [2020-12-22 10:18:25,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:18:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:18:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 10:18:25,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791748212] [2020-12-22 10:18:25,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:18:25,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:18:25,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907409035] [2020-12-22 10:18:25,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:18:25,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:18:25,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:18:25,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:18:25,844 INFO L87 Difference]: Start difference. First operand 36253 states and 52473 transitions. Second operand 9 states. [2020-12-22 10:18:34,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:18:34,582 INFO L93 Difference]: Finished difference Result 161069 states and 231457 transitions. [2020-12-22 10:18:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:18:34,582 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 10:18:34,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:18:34,774 INFO L225 Difference]: With dead ends: 161069 [2020-12-22 10:18:34,774 INFO L226 Difference]: Without dead ends: 143723 [2020-12-22 10:18:34,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:18:35,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143723 states. [2020-12-22 10:18:39,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143723 to 62301. [2020-12-22 10:18:39,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62301 states. [2020-12-22 10:18:39,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62301 states to 62301 states and 89369 transitions. [2020-12-22 10:18:39,864 INFO L78 Accepts]: Start accepts. Automaton has 62301 states and 89369 transitions. Word has length 129 [2020-12-22 10:18:39,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:18:39,865 INFO L481 AbstractCegarLoop]: Abstraction has 62301 states and 89369 transitions. [2020-12-22 10:18:39,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:18:39,865 INFO L276 IsEmpty]: Start isEmpty. Operand 62301 states and 89369 transitions. [2020-12-22 10:18:39,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:18:39,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:18:39,880 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:18:39,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:18:39,880 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:18:39,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:18:39,881 INFO L82 PathProgramCache]: Analyzing trace with hash 126178628, now seen corresponding path program 1 times [2020-12-22 10:18:39,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:18:39,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352438283] [2020-12-22 10:18:39,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:18:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:18:40,192 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 10:18:40,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352438283] [2020-12-22 10:18:40,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:18:40,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:18:40,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554980565] [2020-12-22 10:18:40,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:18:40,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:18:40,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:18:40,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:18:40,196 INFO L87 Difference]: Start difference. First operand 62301 states and 89369 transitions. Second operand 9 states. [2020-12-22 10:18:50,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:18:50,506 INFO L93 Difference]: Finished difference Result 178413 states and 256161 transitions. [2020-12-22 10:18:50,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:18:50,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 10:18:50,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:18:50,712 INFO L225 Difference]: With dead ends: 178413 [2020-12-22 10:18:50,712 INFO L226 Difference]: Without dead ends: 161067 [2020-12-22 10:18:50,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:18:50,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161067 states. [2020-12-22 10:18:57,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161067 to 79645. [2020-12-22 10:18:57,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79645 states. [2020-12-22 10:18:57,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79645 states to 79645 states and 114073 transitions. [2020-12-22 10:18:57,463 INFO L78 Accepts]: Start accepts. Automaton has 79645 states and 114073 transitions. Word has length 129 [2020-12-22 10:18:57,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:18:57,464 INFO L481 AbstractCegarLoop]: Abstraction has 79645 states and 114073 transitions. [2020-12-22 10:18:57,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:18:57,464 INFO L276 IsEmpty]: Start isEmpty. Operand 79645 states and 114073 transitions. [2020-12-22 10:18:57,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:18:57,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:18:57,480 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:18:57,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:18:57,481 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:18:57,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:18:57,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1109280412, now seen corresponding path program 1 times [2020-12-22 10:18:57,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:18:57,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925937812] [2020-12-22 10:18:57,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:18:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:18:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 10:18:57,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925937812] [2020-12-22 10:18:57,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:18:57,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:18:57,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481604245] [2020-12-22 10:18:57,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:18:57,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:18:57,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:18:57,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:18:57,660 INFO L87 Difference]: Start difference. First operand 79645 states and 114073 transitions. Second operand 9 states. [2020-12-22 10:19:10,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:19:10,627 INFO L93 Difference]: Finished difference Result 195757 states and 280865 transitions. [2020-12-22 10:19:10,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:19:10,632 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 10:19:10,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:19:10,862 INFO L225 Difference]: With dead ends: 195757 [2020-12-22 10:19:10,862 INFO L226 Difference]: Without dead ends: 178411 [2020-12-22 10:19:10,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:19:11,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178411 states. [2020-12-22 10:19:19,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178411 to 96989. [2020-12-22 10:19:19,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96989 states. [2020-12-22 10:19:19,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96989 states to 96989 states and 138777 transitions. [2020-12-22 10:19:19,317 INFO L78 Accepts]: Start accepts. Automaton has 96989 states and 138777 transitions. Word has length 129 [2020-12-22 10:19:19,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:19:19,317 INFO L481 AbstractCegarLoop]: Abstraction has 96989 states and 138777 transitions. [2020-12-22 10:19:19,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:19:19,317 INFO L276 IsEmpty]: Start isEmpty. Operand 96989 states and 138777 transitions. [2020-12-22 10:19:19,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:19:19,334 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:19:19,334 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:19:19,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 10:19:19,335 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:19:19,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:19:19,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1764691332, now seen corresponding path program 1 times [2020-12-22 10:19:19,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:19:19,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99404955] [2020-12-22 10:19:19,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:19:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:19:19,514 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 10:19:19,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99404955] [2020-12-22 10:19:19,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:19:19,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:19:19,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156934492] [2020-12-22 10:19:19,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:19:19,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:19:19,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:19:19,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:19:19,517 INFO L87 Difference]: Start difference. First operand 96989 states and 138777 transitions. Second operand 9 states. [2020-12-22 10:19:35,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:19:35,116 INFO L93 Difference]: Finished difference Result 213101 states and 305569 transitions. [2020-12-22 10:19:35,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:19:35,117 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 10:19:35,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:19:35,488 INFO L225 Difference]: With dead ends: 213101 [2020-12-22 10:19:35,489 INFO L226 Difference]: Without dead ends: 195755 [2020-12-22 10:19:35,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:19:35,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195755 states. [2020-12-22 10:19:45,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195755 to 114333. [2020-12-22 10:19:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114333 states. [2020-12-22 10:19:46,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114333 states to 114333 states and 163481 transitions. [2020-12-22 10:19:46,098 INFO L78 Accepts]: Start accepts. Automaton has 114333 states and 163481 transitions. Word has length 129 [2020-12-22 10:19:46,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:19:46,098 INFO L481 AbstractCegarLoop]: Abstraction has 114333 states and 163481 transitions. [2020-12-22 10:19:46,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:19:46,098 INFO L276 IsEmpty]: Start isEmpty. Operand 114333 states and 163481 transitions. [2020-12-22 10:19:46,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:19:46,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:19:46,112 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:19:46,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 10:19:46,112 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:19:46,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:19:46,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1198870948, now seen corresponding path program 1 times [2020-12-22 10:19:46,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:19:46,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416316596] [2020-12-22 10:19:46,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:19:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:19:46,307 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 10:19:46,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416316596] [2020-12-22 10:19:46,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:19:46,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:19:46,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281427085] [2020-12-22 10:19:46,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:19:46,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:19:46,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:19:46,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:19:46,309 INFO L87 Difference]: Start difference. First operand 114333 states and 163481 transitions. Second operand 9 states. [2020-12-22 10:20:05,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:20:05,519 INFO L93 Difference]: Finished difference Result 230445 states and 330273 transitions. [2020-12-22 10:20:05,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:20:05,524 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 10:20:05,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:20:05,952 INFO L225 Difference]: With dead ends: 230445 [2020-12-22 10:20:05,952 INFO L226 Difference]: Without dead ends: 213099 [2020-12-22 10:20:06,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:20:06,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213099 states. [2020-12-22 10:20:18,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213099 to 131677. [2020-12-22 10:20:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131677 states. [2020-12-22 10:20:19,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131677 states to 131677 states and 188185 transitions. [2020-12-22 10:20:19,310 INFO L78 Accepts]: Start accepts. Automaton has 131677 states and 188185 transitions. Word has length 129 [2020-12-22 10:20:19,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:20:19,310 INFO L481 AbstractCegarLoop]: Abstraction has 131677 states and 188185 transitions. [2020-12-22 10:20:19,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:20:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand 131677 states and 188185 transitions. [2020-12-22 10:20:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:20:19,328 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:20:19,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:20:19,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 10:20:19,328 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:20:19,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:20:19,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1388086724, now seen corresponding path program 1 times [2020-12-22 10:20:19,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:20:19,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532015971] [2020-12-22 10:20:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:20:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:20:19,504 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 10:20:19,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532015971] [2020-12-22 10:20:19,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:20:19,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:20:19,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748451664] [2020-12-22 10:20:19,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:20:19,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:20:19,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:20:19,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:20:19,507 INFO L87 Difference]: Start difference. First operand 131677 states and 188185 transitions. Second operand 9 states.