/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/product-lines/elevator_spec1_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:02:25,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:02:25,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:02:25,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:02:25,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:02:25,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:02:25,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:02:25,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:02:25,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:02:25,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:02:25,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:02:25,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:02:25,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:02:25,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:02:25,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:02:25,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:02:25,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:02:25,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:02:25,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:02:25,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:02:25,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:02:25,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:02:25,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:02:25,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:02:25,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:02:25,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:02:25,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:02:25,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:02:25,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:02:25,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:02:25,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:02:25,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:02:25,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:02:25,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:02:25,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:02:25,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:02:25,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:02:25,671 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:02:25,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:02:25,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:02:25,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:02:25,674 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:02:25,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:02:25,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:02:25,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:02:25,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:02:25,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:02:25,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:02:25,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:02:25,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:02:25,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:02:25,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:02:25,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:02:25,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:02:25,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:02:25,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:02:25,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:02:25,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:02:25,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:02:25,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:02:25,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:02:25,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:02:25,680 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:02:26,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:02:26,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:02:26,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:02:26,084 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:02:26,085 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:02:26,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product29.cil.c [2020-12-22 06:02:26,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b60233af/06442725b6a8499b8712f916ed2e5ee2/FLAGc95f43719 [2020-12-22 06:02:27,023 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:02:27,024 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product29.cil.c [2020-12-22 06:02:27,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b60233af/06442725b6a8499b8712f916ed2e5ee2/FLAGc95f43719 [2020-12-22 06:02:27,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b60233af/06442725b6a8499b8712f916ed2e5ee2 [2020-12-22 06:02:27,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:02:27,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:02:27,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:02:27,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:02:27,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:02:27,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:02:27" (1/1) ... [2020-12-22 06:02:27,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32df33b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:27, skipping insertion in model container [2020-12-22 06:02:27,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:02:27" (1/1) ... [2020-12-22 06:02:27,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:02:27,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:02:27,625 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/product-lines/elevator_spec1_product29.cil.c[3793,3806] [2020-12-22 06:02:28,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:02:28,076 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:02:28,095 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/product-lines/elevator_spec1_product29.cil.c[3793,3806] [2020-12-22 06:02:28,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:02:28,290 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:02:28,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:28 WrapperNode [2020-12-22 06:02:28,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:02:28,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:02:28,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:02:28,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:02:28,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:28" (1/1) ... [2020-12-22 06:02:28,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:28" (1/1) ... [2020-12-22 06:02:28,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:02:28,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:02:28,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:02:28,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:02:28,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:28" (1/1) ... [2020-12-22 06:02:28,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:28" (1/1) ... [2020-12-22 06:02:28,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:28" (1/1) ... [2020-12-22 06:02:28,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:28" (1/1) ... [2020-12-22 06:02:28,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:28" (1/1) ... [2020-12-22 06:02:28,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:28" (1/1) ... [2020-12-22 06:02:28,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:28" (1/1) ... [2020-12-22 06:02:28,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:02:29,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:02:29,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:02:29,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:02:29,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:28" (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 06:02:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:02:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:02:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:02:29,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:02:37,291 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:02:37,292 INFO L299 CfgBuilder]: Removed 809 assume(true) statements. [2020-12-22 06:02:37,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:02:37 BoogieIcfgContainer [2020-12-22 06:02:37,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:02:37,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:02:37,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:02:37,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:02:37,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:02:27" (1/3) ... [2020-12-22 06:02:37,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a8c0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:02:37, skipping insertion in model container [2020-12-22 06:02:37,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:28" (2/3) ... [2020-12-22 06:02:37,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a8c0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:02:37, skipping insertion in model container [2020-12-22 06:02:37,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:02:37" (3/3) ... [2020-12-22 06:02:37,316 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product29.cil.c [2020-12-22 06:02:37,323 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:02:37,331 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:02:37,352 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:02:37,399 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:02:37,399 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:02:37,399 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:02:37,399 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:02:37,400 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:02:37,400 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:02:37,400 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:02:37,400 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:02:37,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3565 states. [2020-12-22 06:02:37,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:02:37,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:37,503 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] [2020-12-22 06:02:37,504 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:37,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:37,511 INFO L82 PathProgramCache]: Analyzing trace with hash -347031252, now seen corresponding path program 1 times [2020-12-22 06:02:37,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:37,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686909478] [2020-12-22 06:02:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:38,004 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 06:02:38,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686909478] [2020-12-22 06:02:38,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:38,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:38,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561697685] [2020-12-22 06:02:38,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:38,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:38,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:38,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:38,030 INFO L87 Difference]: Start difference. First operand 3565 states. Second operand 3 states. [2020-12-22 06:02:38,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:38,306 INFO L93 Difference]: Finished difference Result 7121 states and 13443 transitions. [2020-12-22 06:02:38,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:38,308 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-22 06:02:38,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:38,348 INFO L225 Difference]: With dead ends: 7121 [2020-12-22 06:02:38,348 INFO L226 Difference]: Without dead ends: 3561 [2020-12-22 06:02:38,360 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 06:02:38,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2020-12-22 06:02:38,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3561. [2020-12-22 06:02:38,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3561 states. [2020-12-22 06:02:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 6716 transitions. [2020-12-22 06:02:38,586 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 6716 transitions. Word has length 52 [2020-12-22 06:02:38,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:38,587 INFO L481 AbstractCegarLoop]: Abstraction has 3561 states and 6716 transitions. [2020-12-22 06:02:38,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:38,587 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 6716 transitions. [2020-12-22 06:02:38,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:02:38,594 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:38,594 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] [2020-12-22 06:02:38,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:02:38,595 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:38,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:38,597 INFO L82 PathProgramCache]: Analyzing trace with hash -507788568, now seen corresponding path program 1 times [2020-12-22 06:02:38,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:38,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288445638] [2020-12-22 06:02:38,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:38,764 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 06:02:38,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288445638] [2020-12-22 06:02:38,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:38,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:38,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967299162] [2020-12-22 06:02:38,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:38,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:38,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:38,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:38,768 INFO L87 Difference]: Start difference. First operand 3561 states and 6716 transitions. Second operand 3 states. [2020-12-22 06:02:39,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:39,107 INFO L93 Difference]: Finished difference Result 10603 states and 20008 transitions. [2020-12-22 06:02:39,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:39,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 06:02:39,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:39,152 INFO L225 Difference]: With dead ends: 10603 [2020-12-22 06:02:39,153 INFO L226 Difference]: Without dead ends: 7055 [2020-12-22 06:02:39,164 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 06:02:39,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7055 states. [2020-12-22 06:02:39,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7055 to 3561. [2020-12-22 06:02:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3561 states. [2020-12-22 06:02:39,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 6711 transitions. [2020-12-22 06:02:39,358 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 6711 transitions. Word has length 56 [2020-12-22 06:02:39,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:39,359 INFO L481 AbstractCegarLoop]: Abstraction has 3561 states and 6711 transitions. [2020-12-22 06:02:39,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:39,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 6711 transitions. [2020-12-22 06:02:39,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:02:39,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:39,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:39,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:02:39,369 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:39,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:39,374 INFO L82 PathProgramCache]: Analyzing trace with hash -322695074, now seen corresponding path program 1 times [2020-12-22 06:02:39,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:39,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766191173] [2020-12-22 06:02:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:39,584 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 06:02:39,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766191173] [2020-12-22 06:02:39,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:39,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:39,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702570760] [2020-12-22 06:02:39,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:39,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:39,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:39,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:39,587 INFO L87 Difference]: Start difference. First operand 3561 states and 6711 transitions. Second operand 6 states. [2020-12-22 06:02:40,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:40,599 INFO L93 Difference]: Finished difference Result 14019 states and 26443 transitions. [2020-12-22 06:02:40,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:02:40,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-12-22 06:02:40,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:40,682 INFO L225 Difference]: With dead ends: 14019 [2020-12-22 06:02:40,683 INFO L226 Difference]: Without dead ends: 10501 [2020-12-22 06:02:40,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 06:02:40,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10501 states. [2020-12-22 06:02:40,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10501 to 3557. [2020-12-22 06:02:40,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3557 states. [2020-12-22 06:02:40,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 6700 transitions. [2020-12-22 06:02:40,923 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 6700 transitions. Word has length 60 [2020-12-22 06:02:40,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:40,931 INFO L481 AbstractCegarLoop]: Abstraction has 3557 states and 6700 transitions. [2020-12-22 06:02:40,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:40,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 6700 transitions. [2020-12-22 06:02:40,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 06:02:40,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:40,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:40,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:02:40,936 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:40,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:40,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1416716573, now seen corresponding path program 1 times [2020-12-22 06:02:40,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:40,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792394274] [2020-12-22 06:02:40,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:41,060 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 06:02:41,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792394274] [2020-12-22 06:02:41,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:41,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:41,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331551519] [2020-12-22 06:02:41,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:41,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:41,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:41,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:41,066 INFO L87 Difference]: Start difference. First operand 3557 states and 6700 transitions. Second operand 4 states. [2020-12-22 06:02:41,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:41,712 INFO L93 Difference]: Finished difference Result 10559 states and 19910 transitions. [2020-12-22 06:02:41,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:41,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 06:02:41,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:41,734 INFO L225 Difference]: With dead ends: 10559 [2020-12-22 06:02:41,734 INFO L226 Difference]: Without dead ends: 7045 [2020-12-22 06:02:41,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:41,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7045 states. [2020-12-22 06:02:42,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7045 to 3557. [2020-12-22 06:02:42,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3557 states. [2020-12-22 06:02:42,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 6691 transitions. [2020-12-22 06:02:42,049 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 6691 transitions. Word has length 62 [2020-12-22 06:02:42,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:42,051 INFO L481 AbstractCegarLoop]: Abstraction has 3557 states and 6691 transitions. [2020-12-22 06:02:42,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:42,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 6691 transitions. [2020-12-22 06:02:42,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 06:02:42,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:42,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:42,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:02:42,059 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:42,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:42,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1879015326, now seen corresponding path program 1 times [2020-12-22 06:02:42,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:42,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941576909] [2020-12-22 06:02:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:42,164 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 06:02:42,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941576909] [2020-12-22 06:02:42,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:42,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:42,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701923521] [2020-12-22 06:02:42,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:42,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:42,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:42,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:42,168 INFO L87 Difference]: Start difference. First operand 3557 states and 6691 transitions. Second operand 4 states. [2020-12-22 06:02:42,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:42,782 INFO L93 Difference]: Finished difference Result 10559 states and 19892 transitions. [2020-12-22 06:02:42,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:42,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-22 06:02:42,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:42,806 INFO L225 Difference]: With dead ends: 10559 [2020-12-22 06:02:42,806 INFO L226 Difference]: Without dead ends: 7045 [2020-12-22 06:02:42,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:42,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7045 states. [2020-12-22 06:02:43,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7045 to 3557. [2020-12-22 06:02:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3557 states. [2020-12-22 06:02:43,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 6682 transitions. [2020-12-22 06:02:43,019 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 6682 transitions. Word has length 64 [2020-12-22 06:02:43,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:43,020 INFO L481 AbstractCegarLoop]: Abstraction has 3557 states and 6682 transitions. [2020-12-22 06:02:43,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:43,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 6682 transitions. [2020-12-22 06:02:43,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:02:43,024 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:43,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:43,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:02:43,025 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:43,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:43,025 INFO L82 PathProgramCache]: Analyzing trace with hash -348121293, now seen corresponding path program 1 times [2020-12-22 06:02:43,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:43,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852803947] [2020-12-22 06:02:43,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:43,125 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 06:02:43,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852803947] [2020-12-22 06:02:43,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:43,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:43,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56395850] [2020-12-22 06:02:43,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:43,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:43,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:43,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:43,128 INFO L87 Difference]: Start difference. First operand 3557 states and 6682 transitions. Second operand 4 states. [2020-12-22 06:02:44,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:44,052 INFO L93 Difference]: Finished difference Result 17475 states and 32920 transitions. [2020-12-22 06:02:44,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:44,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-22 06:02:44,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:44,090 INFO L225 Difference]: With dead ends: 17475 [2020-12-22 06:02:44,090 INFO L226 Difference]: Without dead ends: 13961 [2020-12-22 06:02:44,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:44,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13961 states. [2020-12-22 06:02:44,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13961 to 3557. [2020-12-22 06:02:44,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3557 states. [2020-12-22 06:02:44,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 6678 transitions. [2020-12-22 06:02:44,348 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 6678 transitions. Word has length 66 [2020-12-22 06:02:44,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:44,348 INFO L481 AbstractCegarLoop]: Abstraction has 3557 states and 6678 transitions. [2020-12-22 06:02:44,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:44,349 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 6678 transitions. [2020-12-22 06:02:44,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:02:44,353 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:44,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:44,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:02:44,353 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:44,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:44,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1007056205, now seen corresponding path program 1 times [2020-12-22 06:02:44,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:44,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239378963] [2020-12-22 06:02:44,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:44,450 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 06:02:44,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239378963] [2020-12-22 06:02:44,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:44,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:44,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704647151] [2020-12-22 06:02:44,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:44,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:44,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:44,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:44,453 INFO L87 Difference]: Start difference. First operand 3557 states and 6678 transitions. Second operand 4 states. [2020-12-22 06:02:45,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:45,044 INFO L93 Difference]: Finished difference Result 13996 states and 26357 transitions. [2020-12-22 06:02:45,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:45,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-22 06:02:45,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:45,078 INFO L225 Difference]: With dead ends: 13996 [2020-12-22 06:02:45,078 INFO L226 Difference]: Without dead ends: 10461 [2020-12-22 06:02:45,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:45,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10461 states. [2020-12-22 06:02:45,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10461 to 3539. [2020-12-22 06:02:45,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3539 states. [2020-12-22 06:02:45,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 6647 transitions. [2020-12-22 06:02:45,396 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 6647 transitions. Word has length 66 [2020-12-22 06:02:45,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:45,396 INFO L481 AbstractCegarLoop]: Abstraction has 3539 states and 6647 transitions. [2020-12-22 06:02:45,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:45,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 6647 transitions. [2020-12-22 06:02:45,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 06:02:45,400 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:45,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:45,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:02:45,401 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:45,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:45,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1165671086, now seen corresponding path program 1 times [2020-12-22 06:02:45,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:45,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10760232] [2020-12-22 06:02:45,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:45,504 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 06:02:45,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10760232] [2020-12-22 06:02:45,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:45,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:45,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559118526] [2020-12-22 06:02:45,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:45,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:45,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:45,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:45,507 INFO L87 Difference]: Start difference. First operand 3539 states and 6647 transitions. Second operand 4 states. [2020-12-22 06:02:46,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:46,106 INFO L93 Difference]: Finished difference Result 10523 states and 19805 transitions. [2020-12-22 06:02:46,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:46,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-12-22 06:02:46,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:46,128 INFO L225 Difference]: With dead ends: 10523 [2020-12-22 06:02:46,128 INFO L226 Difference]: Without dead ends: 7006 [2020-12-22 06:02:46,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:46,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7006 states. [2020-12-22 06:02:46,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7006 to 3539. [2020-12-22 06:02:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3539 states. [2020-12-22 06:02:46,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 6641 transitions. [2020-12-22 06:02:46,382 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 6641 transitions. Word has length 67 [2020-12-22 06:02:46,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:46,385 INFO L481 AbstractCegarLoop]: Abstraction has 3539 states and 6641 transitions. [2020-12-22 06:02:46,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:46,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 6641 transitions. [2020-12-22 06:02:46,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:02:46,395 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:46,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:46,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:02:46,396 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:46,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:46,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1401532398, now seen corresponding path program 1 times [2020-12-22 06:02:46,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:46,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86092331] [2020-12-22 06:02:46,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:46,489 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 06:02:46,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86092331] [2020-12-22 06:02:46,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:46,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:46,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287501302] [2020-12-22 06:02:46,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:46,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:46,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:46,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:46,497 INFO L87 Difference]: Start difference. First operand 3539 states and 6641 transitions. Second operand 4 states. [2020-12-22 06:02:47,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:47,052 INFO L93 Difference]: Finished difference Result 10523 states and 19793 transitions. [2020-12-22 06:02:47,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:47,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-12-22 06:02:47,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:47,072 INFO L225 Difference]: With dead ends: 10523 [2020-12-22 06:02:47,072 INFO L226 Difference]: Without dead ends: 7006 [2020-12-22 06:02:47,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:47,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7006 states. [2020-12-22 06:02:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7006 to 3539. [2020-12-22 06:02:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3539 states. [2020-12-22 06:02:47,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 6635 transitions. [2020-12-22 06:02:47,273 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 6635 transitions. Word has length 68 [2020-12-22 06:02:47,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:47,278 INFO L481 AbstractCegarLoop]: Abstraction has 3539 states and 6635 transitions. [2020-12-22 06:02:47,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:47,278 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 6635 transitions. [2020-12-22 06:02:47,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:02:47,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:47,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:47,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:02:47,282 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:47,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:47,283 INFO L82 PathProgramCache]: Analyzing trace with hash 676236297, now seen corresponding path program 1 times [2020-12-22 06:02:47,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:47,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416367043] [2020-12-22 06:02:47,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:47,374 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 06:02:47,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416367043] [2020-12-22 06:02:47,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:47,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:02:47,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969336910] [2020-12-22 06:02:47,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:02:47,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:47,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:02:47,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:02:47,377 INFO L87 Difference]: Start difference. First operand 3539 states and 6635 transitions. Second operand 7 states. [2020-12-22 06:02:48,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:48,333 INFO L93 Difference]: Finished difference Result 17446 states and 32834 transitions. [2020-12-22 06:02:48,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:48,333 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-12-22 06:02:48,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:48,368 INFO L225 Difference]: With dead ends: 17446 [2020-12-22 06:02:48,369 INFO L226 Difference]: Without dead ends: 13935 [2020-12-22 06:02:48,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:02:48,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13935 states. [2020-12-22 06:02:48,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13935 to 3541. [2020-12-22 06:02:48,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3541 states. [2020-12-22 06:02:48,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3541 states to 3541 states and 6636 transitions. [2020-12-22 06:02:48,644 INFO L78 Accepts]: Start accepts. Automaton has 3541 states and 6636 transitions. Word has length 69 [2020-12-22 06:02:48,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:48,644 INFO L481 AbstractCegarLoop]: Abstraction has 3541 states and 6636 transitions. [2020-12-22 06:02:48,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:02:48,645 INFO L276 IsEmpty]: Start isEmpty. Operand 3541 states and 6636 transitions. [2020-12-22 06:02:48,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:02:48,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:48,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:48,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:02:48,649 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:48,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:48,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1933078292, now seen corresponding path program 1 times [2020-12-22 06:02:48,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:48,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905002823] [2020-12-22 06:02:48,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:48,739 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 06:02:48,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905002823] [2020-12-22 06:02:48,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:48,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:02:48,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765106230] [2020-12-22 06:02:48,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:02:48,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:48,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:02:48,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:02:48,742 INFO L87 Difference]: Start difference. First operand 3541 states and 6636 transitions. Second operand 7 states. [2020-12-22 06:02:49,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:49,643 INFO L93 Difference]: Finished difference Result 17438 states and 32813 transitions. [2020-12-22 06:02:49,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:49,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-12-22 06:02:49,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:49,675 INFO L225 Difference]: With dead ends: 17438 [2020-12-22 06:02:49,675 INFO L226 Difference]: Without dead ends: 13930 [2020-12-22 06:02:49,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:02:49,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13930 states. [2020-12-22 06:02:49,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13930 to 3546. [2020-12-22 06:02:49,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3546 states. [2020-12-22 06:02:49,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 6644 transitions. [2020-12-22 06:02:49,968 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 6644 transitions. Word has length 71 [2020-12-22 06:02:49,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:49,969 INFO L481 AbstractCegarLoop]: Abstraction has 3546 states and 6644 transitions. [2020-12-22 06:02:49,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:02:49,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 6644 transitions. [2020-12-22 06:02:49,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 06:02:49,973 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:49,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:49,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:02:49,974 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:49,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:49,974 INFO L82 PathProgramCache]: Analyzing trace with hash 919005439, now seen corresponding path program 1 times [2020-12-22 06:02:49,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:49,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27583033] [2020-12-22 06:02:49,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:50,037 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 06:02:50,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27583033] [2020-12-22 06:02:50,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:50,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:50,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552421528] [2020-12-22 06:02:50,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:50,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:50,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:50,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:50,039 INFO L87 Difference]: Start difference. First operand 3546 states and 6644 transitions. Second operand 3 states. [2020-12-22 06:02:50,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:50,212 INFO L93 Difference]: Finished difference Result 7034 states and 13207 transitions. [2020-12-22 06:02:50,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:50,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 06:02:50,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:50,220 INFO L225 Difference]: With dead ends: 7034 [2020-12-22 06:02:50,220 INFO L226 Difference]: Without dead ends: 3525 [2020-12-22 06:02:50,227 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 06:02:50,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2020-12-22 06:02:50,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 3525. [2020-12-22 06:02:50,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3525 states. [2020-12-22 06:02:50,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 6609 transitions. [2020-12-22 06:02:50,429 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 6609 transitions. Word has length 73 [2020-12-22 06:02:50,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:50,429 INFO L481 AbstractCegarLoop]: Abstraction has 3525 states and 6609 transitions. [2020-12-22 06:02:50,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:50,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 6609 transitions. [2020-12-22 06:02:50,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 06:02:50,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:50,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:50,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:02:50,434 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:50,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:50,434 INFO L82 PathProgramCache]: Analyzing trace with hash 656941399, now seen corresponding path program 1 times [2020-12-22 06:02:50,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:50,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671331118] [2020-12-22 06:02:50,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:50,516 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 06:02:50,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671331118] [2020-12-22 06:02:50,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:50,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:50,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558160595] [2020-12-22 06:02:50,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:50,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:50,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:50,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:50,518 INFO L87 Difference]: Start difference. First operand 3525 states and 6609 transitions. Second operand 5 states. [2020-12-22 06:02:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:50,799 INFO L93 Difference]: Finished difference Result 6983 states and 13130 transitions. [2020-12-22 06:02:50,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:50,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-12-22 06:02:50,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:50,806 INFO L225 Difference]: With dead ends: 6983 [2020-12-22 06:02:50,807 INFO L226 Difference]: Without dead ends: 3519 [2020-12-22 06:02:50,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 06:02:50,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3519 states. [2020-12-22 06:02:51,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3519 to 3519. [2020-12-22 06:02:51,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3519 states. [2020-12-22 06:02:51,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3519 states to 3519 states and 6600 transitions. [2020-12-22 06:02:51,034 INFO L78 Accepts]: Start accepts. Automaton has 3519 states and 6600 transitions. Word has length 74 [2020-12-22 06:02:51,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:51,035 INFO L481 AbstractCegarLoop]: Abstraction has 3519 states and 6600 transitions. [2020-12-22 06:02:51,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:51,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3519 states and 6600 transitions. [2020-12-22 06:02:51,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 06:02:51,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:51,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:51,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:02:51,040 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:51,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:51,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1341387991, now seen corresponding path program 1 times [2020-12-22 06:02:51,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:51,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738007121] [2020-12-22 06:02:51,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:51,106 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 06:02:51,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738007121] [2020-12-22 06:02:51,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:51,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:51,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61472179] [2020-12-22 06:02:51,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:51,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:51,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:51,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:51,108 INFO L87 Difference]: Start difference. First operand 3519 states and 6600 transitions. Second operand 4 states. [2020-12-22 06:02:51,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:51,355 INFO L93 Difference]: Finished difference Result 6977 states and 13121 transitions. [2020-12-22 06:02:51,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:02:51,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-12-22 06:02:51,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:51,361 INFO L225 Difference]: With dead ends: 6977 [2020-12-22 06:02:51,361 INFO L226 Difference]: Without dead ends: 3505 [2020-12-22 06:02:51,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:51,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3505 states. [2020-12-22 06:02:51,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3505 to 3505. [2020-12-22 06:02:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3505 states. [2020-12-22 06:02:51,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 6579 transitions. [2020-12-22 06:02:51,561 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 6579 transitions. Word has length 74 [2020-12-22 06:02:51,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:51,562 INFO L481 AbstractCegarLoop]: Abstraction has 3505 states and 6579 transitions. [2020-12-22 06:02:51,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:51,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 6579 transitions. [2020-12-22 06:02:51,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 06:02:51,566 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:51,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:51,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:02:51,566 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:51,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:51,567 INFO L82 PathProgramCache]: Analyzing trace with hash -953941110, now seen corresponding path program 1 times [2020-12-22 06:02:51,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:51,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480415778] [2020-12-22 06:02:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:51,652 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 06:02:51,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480415778] [2020-12-22 06:02:51,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:51,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:51,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107088486] [2020-12-22 06:02:51,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:51,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:51,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:51,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:51,655 INFO L87 Difference]: Start difference. First operand 3505 states and 6579 transitions. Second operand 6 states. [2020-12-22 06:02:51,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:51,969 INFO L93 Difference]: Finished difference Result 6977 states and 13116 transitions. [2020-12-22 06:02:51,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:51,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-12-22 06:02:51,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:51,975 INFO L225 Difference]: With dead ends: 6977 [2020-12-22 06:02:51,975 INFO L226 Difference]: Without dead ends: 3525 [2020-12-22 06:02:51,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:02:51,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2020-12-22 06:02:52,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 3505. [2020-12-22 06:02:52,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3505 states. [2020-12-22 06:02:52,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 6578 transitions. [2020-12-22 06:02:52,196 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 6578 transitions. Word has length 75 [2020-12-22 06:02:52,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:52,196 INFO L481 AbstractCegarLoop]: Abstraction has 3505 states and 6578 transitions. [2020-12-22 06:02:52,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:52,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 6578 transitions. [2020-12-22 06:02:52,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 06:02:52,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:52,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:52,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:02:52,202 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:52,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:52,203 INFO L82 PathProgramCache]: Analyzing trace with hash 461884350, now seen corresponding path program 1 times [2020-12-22 06:02:52,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:52,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359622010] [2020-12-22 06:02:52,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:52,306 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 06:02:52,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359622010] [2020-12-22 06:02:52,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:52,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:52,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273425179] [2020-12-22 06:02:52,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:52,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:52,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:52,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:52,312 INFO L87 Difference]: Start difference. First operand 3505 states and 6578 transitions. Second operand 6 states. [2020-12-22 06:02:52,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:52,764 INFO L93 Difference]: Finished difference Result 6967 states and 13097 transitions. [2020-12-22 06:02:52,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:52,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 06:02:52,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:52,771 INFO L225 Difference]: With dead ends: 6967 [2020-12-22 06:02:52,771 INFO L226 Difference]: Without dead ends: 3520 [2020-12-22 06:02:52,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:02:52,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3520 states. [2020-12-22 06:02:52,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3520 to 3505. [2020-12-22 06:02:52,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3505 states. [2020-12-22 06:02:52,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 6577 transitions. [2020-12-22 06:02:52,991 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 6577 transitions. Word has length 76 [2020-12-22 06:02:52,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:52,992 INFO L481 AbstractCegarLoop]: Abstraction has 3505 states and 6577 transitions. [2020-12-22 06:02:52,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:52,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 6577 transitions. [2020-12-22 06:02:52,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 06:02:52,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:52,995 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] [2020-12-22 06:02:52,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:02:52,996 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:52,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:52,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1274391233, now seen corresponding path program 1 times [2020-12-22 06:02:52,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:52,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663148521] [2020-12-22 06:02:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:53,074 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 06:02:53,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663148521] [2020-12-22 06:02:53,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:53,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:02:53,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198902986] [2020-12-22 06:02:53,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:53,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:53,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:53,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:53,077 INFO L87 Difference]: Start difference. First operand 3505 states and 6577 transitions. Second operand 3 states. [2020-12-22 06:02:53,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:53,617 INFO L93 Difference]: Finished difference Result 8372 states and 15750 transitions. [2020-12-22 06:02:53,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:53,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 06:02:53,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:53,628 INFO L225 Difference]: With dead ends: 8372 [2020-12-22 06:02:53,628 INFO L226 Difference]: Without dead ends: 5810 [2020-12-22 06:02:53,634 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 06:02:53,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5810 states. [2020-12-22 06:02:54,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5810 to 5795. [2020-12-22 06:02:54,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5795 states. [2020-12-22 06:02:54,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5795 states to 5795 states and 10881 transitions. [2020-12-22 06:02:54,048 INFO L78 Accepts]: Start accepts. Automaton has 5795 states and 10881 transitions. Word has length 77 [2020-12-22 06:02:54,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:54,048 INFO L481 AbstractCegarLoop]: Abstraction has 5795 states and 10881 transitions. [2020-12-22 06:02:54,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:54,048 INFO L276 IsEmpty]: Start isEmpty. Operand 5795 states and 10881 transitions. [2020-12-22 06:02:54,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 06:02:54,052 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:54,052 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] [2020-12-22 06:02:54,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:02:54,052 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:54,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:54,053 INFO L82 PathProgramCache]: Analyzing trace with hash -174588988, now seen corresponding path program 1 times [2020-12-22 06:02:54,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:54,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250602201] [2020-12-22 06:02:54,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:54,145 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 06:02:54,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250602201] [2020-12-22 06:02:54,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:54,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:02:54,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117611307] [2020-12-22 06:02:54,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:54,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:54,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:54,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:54,151 INFO L87 Difference]: Start difference. First operand 5795 states and 10881 transitions. Second operand 3 states. [2020-12-22 06:02:54,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:54,822 INFO L93 Difference]: Finished difference Result 14554 states and 27367 transitions. [2020-12-22 06:02:54,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:54,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 06:02:54,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:54,835 INFO L225 Difference]: With dead ends: 14554 [2020-12-22 06:02:54,835 INFO L226 Difference]: Without dead ends: 10292 [2020-12-22 06:02:54,843 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 06:02:54,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10292 states. [2020-12-22 06:02:55,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10292 to 10277. [2020-12-22 06:02:55,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10277 states. [2020-12-22 06:02:55,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10277 states to 10277 states and 19303 transitions. [2020-12-22 06:02:55,374 INFO L78 Accepts]: Start accepts. Automaton has 10277 states and 19303 transitions. Word has length 78 [2020-12-22 06:02:55,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:55,375 INFO L481 AbstractCegarLoop]: Abstraction has 10277 states and 19303 transitions. [2020-12-22 06:02:55,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:55,375 INFO L276 IsEmpty]: Start isEmpty. Operand 10277 states and 19303 transitions. [2020-12-22 06:02:55,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 06:02:55,378 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:55,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:55,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:02:55,378 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:55,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:55,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1488397348, now seen corresponding path program 1 times [2020-12-22 06:02:55,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:55,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274536618] [2020-12-22 06:02:55,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:55,442 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 06:02:55,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274536618] [2020-12-22 06:02:55,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:55,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:02:55,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787293078] [2020-12-22 06:02:55,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:55,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:55,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:55,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:55,445 INFO L87 Difference]: Start difference. First operand 10277 states and 19303 transitions. Second operand 3 states. [2020-12-22 06:02:56,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:56,393 INFO L93 Difference]: Finished difference Result 26722 states and 50216 transitions. [2020-12-22 06:02:56,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:56,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 06:02:56,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:56,420 INFO L225 Difference]: With dead ends: 26722 [2020-12-22 06:02:56,420 INFO L226 Difference]: Without dead ends: 19050 [2020-12-22 06:02:56,427 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 06:02:56,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19050 states. [2020-12-22 06:02:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19050 to 19035. [2020-12-22 06:02:57,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19035 states. [2020-12-22 06:02:57,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19035 states to 19035 states and 35742 transitions. [2020-12-22 06:02:57,277 INFO L78 Accepts]: Start accepts. Automaton has 19035 states and 35742 transitions. Word has length 79 [2020-12-22 06:02:57,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:57,278 INFO L481 AbstractCegarLoop]: Abstraction has 19035 states and 35742 transitions. [2020-12-22 06:02:57,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:57,278 INFO L276 IsEmpty]: Start isEmpty. Operand 19035 states and 35742 transitions. [2020-12-22 06:02:57,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:02:57,281 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:57,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:57,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:02:57,281 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:57,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:57,282 INFO L82 PathProgramCache]: Analyzing trace with hash -864745975, now seen corresponding path program 1 times [2020-12-22 06:02:57,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:57,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621202233] [2020-12-22 06:02:57,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:57,343 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 06:02:57,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621202233] [2020-12-22 06:02:57,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:57,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:02:57,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006454899] [2020-12-22 06:02:57,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:57,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:57,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:57,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:57,345 INFO L87 Difference]: Start difference. First operand 19035 states and 35742 transitions. Second operand 3 states. [2020-12-22 06:02:58,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:58,933 INFO L93 Difference]: Finished difference Result 50646 states and 95079 transitions. [2020-12-22 06:02:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:58,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 06:02:58,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:58,987 INFO L225 Difference]: With dead ends: 50646 [2020-12-22 06:02:58,987 INFO L226 Difference]: Without dead ends: 36144 [2020-12-22 06:02:59,007 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 06:02:59,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36144 states. [2020-12-22 06:03:00,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36144 to 36129. [2020-12-22 06:03:00,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36129 states. [2020-12-22 06:03:00,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36129 states to 36129 states and 67777 transitions. [2020-12-22 06:03:00,946 INFO L78 Accepts]: Start accepts. Automaton has 36129 states and 67777 transitions. Word has length 80 [2020-12-22 06:03:00,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:00,946 INFO L481 AbstractCegarLoop]: Abstraction has 36129 states and 67777 transitions. [2020-12-22 06:03:00,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:00,946 INFO L276 IsEmpty]: Start isEmpty. Operand 36129 states and 67777 transitions. [2020-12-22 06:03:00,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:03:00,950 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:00,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:00,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:03:00,950 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:00,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:00,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1131110153, now seen corresponding path program 1 times [2020-12-22 06:03:00,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:00,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134780812] [2020-12-22 06:03:00,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:01,028 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 06:03:01,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134780812] [2020-12-22 06:03:01,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:01,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:03:01,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323342865] [2020-12-22 06:03:01,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:01,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:01,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:01,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:01,031 INFO L87 Difference]: Start difference. First operand 36129 states and 67777 transitions. Second operand 3 states. [2020-12-22 06:03:04,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:04,099 INFO L93 Difference]: Finished difference Result 97650 states and 183070 transitions. [2020-12-22 06:03:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:04,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 06:03:04,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:04,201 INFO L225 Difference]: With dead ends: 97650 [2020-12-22 06:03:04,201 INFO L226 Difference]: Without dead ends: 69478 [2020-12-22 06:03:04,230 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 06:03:04,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69478 states. [2020-12-22 06:03:07,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69478 to 69463. [2020-12-22 06:03:07,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69463 states. [2020-12-22 06:03:07,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69463 states to 69463 states and 130128 transitions. [2020-12-22 06:03:07,628 INFO L78 Accepts]: Start accepts. Automaton has 69463 states and 130128 transitions. Word has length 81 [2020-12-22 06:03:07,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:07,628 INFO L481 AbstractCegarLoop]: Abstraction has 69463 states and 130128 transitions. [2020-12-22 06:03:07,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:07,628 INFO L276 IsEmpty]: Start isEmpty. Operand 69463 states and 130128 transitions. [2020-12-22 06:03:07,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:03:07,631 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:07,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:07,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:03:07,632 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:07,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:07,632 INFO L82 PathProgramCache]: Analyzing trace with hash -674328181, now seen corresponding path program 1 times [2020-12-22 06:03:07,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:07,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560851449] [2020-12-22 06:03:07,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:07,696 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 06:03:07,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560851449] [2020-12-22 06:03:07,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:07,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:07,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393096021] [2020-12-22 06:03:07,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:07,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:07,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:07,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:07,698 INFO L87 Difference]: Start difference. First operand 69463 states and 130128 transitions. Second operand 3 states. [2020-12-22 06:03:11,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:11,089 INFO L93 Difference]: Finished difference Result 124656 states and 233242 transitions. [2020-12-22 06:03:11,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:11,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 06:03:11,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:11,213 INFO L225 Difference]: With dead ends: 124656 [2020-12-22 06:03:11,214 INFO L226 Difference]: Without dead ends: 69333 [2020-12-22 06:03:11,257 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 06:03:11,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69333 states. [2020-12-22 06:03:14,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69333 to 69333. [2020-12-22 06:03:14,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69333 states. [2020-12-22 06:03:14,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69333 states to 69333 states and 129870 transitions. [2020-12-22 06:03:14,771 INFO L78 Accepts]: Start accepts. Automaton has 69333 states and 129870 transitions. Word has length 81 [2020-12-22 06:03:14,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:14,772 INFO L481 AbstractCegarLoop]: Abstraction has 69333 states and 129870 transitions. [2020-12-22 06:03:14,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:14,772 INFO L276 IsEmpty]: Start isEmpty. Operand 69333 states and 129870 transitions. [2020-12-22 06:03:14,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 06:03:14,775 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:14,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:14,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:03:14,776 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:14,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:14,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1545249019, now seen corresponding path program 1 times [2020-12-22 06:03:14,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:14,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542661771] [2020-12-22 06:03:14,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:14,855 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 06:03:14,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542661771] [2020-12-22 06:03:14,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:14,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:14,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204576638] [2020-12-22 06:03:14,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:14,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:14,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:14,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:14,861 INFO L87 Difference]: Start difference. First operand 69333 states and 129870 transitions. Second operand 3 states. [2020-12-22 06:03:20,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:20,766 INFO L93 Difference]: Finished difference Result 193628 states and 362459 transitions. [2020-12-22 06:03:20,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:20,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 06:03:20,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:20,997 INFO L225 Difference]: With dead ends: 193628 [2020-12-22 06:03:20,997 INFO L226 Difference]: Without dead ends: 138499 [2020-12-22 06:03:21,054 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 06:03:21,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138499 states. [2020-12-22 06:03:27,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138499 to 138499. [2020-12-22 06:03:27,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138499 states. [2020-12-22 06:03:27,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138499 states to 138499 states and 259441 transitions. [2020-12-22 06:03:27,805 INFO L78 Accepts]: Start accepts. Automaton has 138499 states and 259441 transitions. Word has length 83 [2020-12-22 06:03:27,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:27,805 INFO L481 AbstractCegarLoop]: Abstraction has 138499 states and 259441 transitions. [2020-12-22 06:03:27,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:27,805 INFO L276 IsEmpty]: Start isEmpty. Operand 138499 states and 259441 transitions. [2020-12-22 06:03:27,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 06:03:27,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:27,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:27,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:03:27,811 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:27,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:27,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1229941369, now seen corresponding path program 1 times [2020-12-22 06:03:27,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:27,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474006063] [2020-12-22 06:03:27,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:27,974 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 06:03:27,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474006063] [2020-12-22 06:03:27,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:27,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:27,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017276104] [2020-12-22 06:03:27,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:27,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:27,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:27,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:27,976 INFO L87 Difference]: Start difference. First operand 138499 states and 259441 transitions. Second operand 5 states. [2020-12-22 06:03:38,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:38,144 INFO L93 Difference]: Finished difference Result 247737 states and 463623 transitions. [2020-12-22 06:03:38,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:03:38,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 06:03:38,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:38,765 INFO L225 Difference]: With dead ends: 247737 [2020-12-22 06:03:38,765 INFO L226 Difference]: Without dead ends: 247722 [2020-12-22 06:03:38,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:03:38,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247722 states. [2020-12-22 06:03:46,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247722 to 138691. [2020-12-22 06:03:46,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138691 states. [2020-12-22 06:03:46,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138691 states to 138691 states and 259633 transitions. [2020-12-22 06:03:46,797 INFO L78 Accepts]: Start accepts. Automaton has 138691 states and 259633 transitions. Word has length 83 [2020-12-22 06:03:46,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:46,798 INFO L481 AbstractCegarLoop]: Abstraction has 138691 states and 259633 transitions. [2020-12-22 06:03:46,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:46,798 INFO L276 IsEmpty]: Start isEmpty. Operand 138691 states and 259633 transitions. [2020-12-22 06:03:46,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 06:03:46,804 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:46,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:46,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:03:46,805 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:46,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:46,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1196018206, now seen corresponding path program 1 times [2020-12-22 06:03:46,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:46,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824170262] [2020-12-22 06:03:46,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:46,924 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 06:03:46,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824170262] [2020-12-22 06:03:46,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:46,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:46,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791783948] [2020-12-22 06:03:46,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:46,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:46,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:46,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:46,926 INFO L87 Difference]: Start difference. First operand 138691 states and 259633 transitions. Second operand 4 states. [2020-12-22 06:03:52,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:52,733 INFO L93 Difference]: Finished difference Result 138770 states and 259711 transitions. [2020-12-22 06:03:52,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:52,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-12-22 06:03:52,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:52,958 INFO L225 Difference]: With dead ends: 138770 [2020-12-22 06:03:52,958 INFO L226 Difference]: Without dead ends: 138755 [2020-12-22 06:03:52,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:53,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138755 states. [2020-12-22 06:03:59,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138755 to 138691. [2020-12-22 06:03:59,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138691 states. [2020-12-22 06:03:59,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138691 states to 138691 states and 259569 transitions. [2020-12-22 06:03:59,796 INFO L78 Accepts]: Start accepts. Automaton has 138691 states and 259569 transitions. Word has length 85 [2020-12-22 06:03:59,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:59,796 INFO L481 AbstractCegarLoop]: Abstraction has 138691 states and 259569 transitions. [2020-12-22 06:03:59,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:59,797 INFO L276 IsEmpty]: Start isEmpty. Operand 138691 states and 259569 transitions. [2020-12-22 06:03:59,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:03:59,804 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:59,804 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] [2020-12-22 06:03:59,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:03:59,804 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:59,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:59,805 INFO L82 PathProgramCache]: Analyzing trace with hash 757914992, now seen corresponding path program 1 times [2020-12-22 06:03:59,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:59,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666786235] [2020-12-22 06:03:59,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:59,972 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 06:03:59,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666786235] [2020-12-22 06:03:59,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:59,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:59,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855942161] [2020-12-22 06:03:59,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:59,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:59,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:59,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:59,975 INFO L87 Difference]: Start difference. First operand 138691 states and 259569 transitions. Second operand 4 states. [2020-12-22 06:04:07,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:07,339 INFO L93 Difference]: Finished difference Result 284009 states and 531413 transitions. [2020-12-22 06:04:07,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:04:07,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-12-22 06:04:07,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:07,760 INFO L225 Difference]: With dead ends: 284009 [2020-12-22 06:04:07,760 INFO L226 Difference]: Without dead ends: 145440 [2020-12-22 06:04:07,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:07,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145440 states. [2020-12-22 06:04:14,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145440 to 141661. [2020-12-22 06:04:14,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141661 states. [2020-12-22 06:04:15,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141661 states to 141661 states and 265023 transitions. [2020-12-22 06:04:15,324 INFO L78 Accepts]: Start accepts. Automaton has 141661 states and 265023 transitions. Word has length 92 [2020-12-22 06:04:15,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:15,324 INFO L481 AbstractCegarLoop]: Abstraction has 141661 states and 265023 transitions. [2020-12-22 06:04:15,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:15,325 INFO L276 IsEmpty]: Start isEmpty. Operand 141661 states and 265023 transitions. [2020-12-22 06:04:15,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 06:04:15,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:15,332 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 06:04:15,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:04:15,333 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:15,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:15,333 INFO L82 PathProgramCache]: Analyzing trace with hash 2127870146, now seen corresponding path program 1 times [2020-12-22 06:04:15,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:15,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112436864] [2020-12-22 06:04:15,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:15,438 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 06:04:15,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112436864] [2020-12-22 06:04:15,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:15,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:04:15,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476758446] [2020-12-22 06:04:15,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:15,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:15,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:15,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:15,440 INFO L87 Difference]: Start difference. First operand 141661 states and 265023 transitions. Second operand 5 states. [2020-12-22 06:04:43,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:43,012 INFO L93 Difference]: Finished difference Result 634385 states and 1181111 transitions. [2020-12-22 06:04:43,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:04:43,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-12-22 06:04:43,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:44,170 INFO L225 Difference]: With dead ends: 634385 [2020-12-22 06:04:44,170 INFO L226 Difference]: Without dead ends: 492844 [2020-12-22 06:04:44,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:04:44,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492844 states. [2020-12-22 06:04:58,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492844 to 141797. [2020-12-22 06:04:58,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141797 states. [2020-12-22 06:04:58,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141797 states to 141797 states and 265159 transitions. [2020-12-22 06:04:58,645 INFO L78 Accepts]: Start accepts. Automaton has 141797 states and 265159 transitions. Word has length 93 [2020-12-22 06:04:58,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:58,645 INFO L481 AbstractCegarLoop]: Abstraction has 141797 states and 265159 transitions. [2020-12-22 06:04:58,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:58,645 INFO L276 IsEmpty]: Start isEmpty. Operand 141797 states and 265159 transitions. [2020-12-22 06:04:58,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 06:04:58,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:58,653 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 06:04:58,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:04:58,654 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:58,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:58,654 INFO L82 PathProgramCache]: Analyzing trace with hash -2037763534, now seen corresponding path program 1 times [2020-12-22 06:04:58,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:58,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206110913] [2020-12-22 06:04:58,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:58,799 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 06:04:58,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206110913] [2020-12-22 06:04:58,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:58,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:04:58,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108046612] [2020-12-22 06:04:58,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:58,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:58,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:58,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:58,801 INFO L87 Difference]: Start difference. First operand 141797 states and 265159 transitions. Second operand 4 states. [2020-12-22 06:05:20,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:20,369 INFO L93 Difference]: Finished difference Result 452526 states and 846741 transitions. [2020-12-22 06:05:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:05:20,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-12-22 06:05:20,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:21,188 INFO L225 Difference]: With dead ends: 452526 [2020-12-22 06:05:21,188 INFO L226 Difference]: Without dead ends: 310835 [2020-12-22 06:05:21,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:05:21,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310835 states. [2020-12-22 06:05:32,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310835 to 201725. [2020-12-22 06:05:32,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201725 states. [2020-12-22 06:05:33,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201725 states to 201725 states and 377647 transitions. [2020-12-22 06:05:33,795 INFO L78 Accepts]: Start accepts. Automaton has 201725 states and 377647 transitions. Word has length 94 [2020-12-22 06:05:33,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:33,795 INFO L481 AbstractCegarLoop]: Abstraction has 201725 states and 377647 transitions. [2020-12-22 06:05:33,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:05:33,795 INFO L276 IsEmpty]: Start isEmpty. Operand 201725 states and 377647 transitions. [2020-12-22 06:05:33,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 06:05:33,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:33,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:33,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 06:05:33,805 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:05:33,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:33,806 INFO L82 PathProgramCache]: Analyzing trace with hash 349809373, now seen corresponding path program 1 times [2020-12-22 06:05:33,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:33,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709370689] [2020-12-22 06:05:33,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:33,943 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 06:05:33,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709370689] [2020-12-22 06:05:33,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:33,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:33,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809580672] [2020-12-22 06:05:33,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:05:33,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:33,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:05:33,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:05:33,945 INFO L87 Difference]: Start difference. First operand 201725 states and 377647 transitions. Second operand 4 states. [2020-12-22 06:05:56,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:56,593 INFO L93 Difference]: Finished difference Result 512454 states and 959163 transitions. [2020-12-22 06:05:56,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:05:56,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-12-22 06:05:56,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:57,255 INFO L225 Difference]: With dead ends: 512454 [2020-12-22 06:05:57,255 INFO L226 Difference]: Without dead ends: 310835 [2020-12-22 06:05:57,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:05:58,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310835 states.