/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_spec3_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:10:24,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:10:24,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:10:24,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:10:24,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:10:24,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:10:24,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:10:24,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:10:24,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:10:24,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:10:24,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:10:24,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:10:24,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:10:24,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:10:24,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:10:24,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:10:24,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:10:24,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:10:24,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:10:24,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:10:24,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:10:24,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:10:24,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:10:24,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:10:24,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:10:24,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:10:24,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:10:24,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:10:24,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:10:24,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:10:24,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:10:24,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:10:24,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:10:24,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:10:24,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:10:24,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:10:24,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:10:24,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:10:24,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:10:24,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:10:24,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:10:24,147 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:10:24,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:10:24,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:10:24,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:10:24,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:10:24,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:10:24,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:10:24,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:10:24,149 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:10:24,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:10:24,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:10:24,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:10:24,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:10:24,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:10:24,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:10:24,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:10:24,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:10:24,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:10:24,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:10:24,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:10:24,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:10:24,152 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:10:24,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:10:24,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:10:24,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:10:24,583 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:10:24,584 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:10:24,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2020-12-22 06:10:24,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ddef997c/10ed63aaf2ef4a15bedea5c520482ae5/FLAGb4af0470c [2020-12-22 06:10:25,577 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:10:25,577 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2020-12-22 06:10:25,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ddef997c/10ed63aaf2ef4a15bedea5c520482ae5/FLAGb4af0470c [2020-12-22 06:10:25,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ddef997c/10ed63aaf2ef4a15bedea5c520482ae5 [2020-12-22 06:10:25,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:10:25,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:10:25,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:10:25,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:10:25,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:10:25,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:10:25" (1/1) ... [2020-12-22 06:10:25,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aca1c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:25, skipping insertion in model container [2020-12-22 06:10:25,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:10:25" (1/1) ... [2020-12-22 06:10:25,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:10:25,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:10:26,563 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_spec3_product24.cil.c[74797,74810] [2020-12-22 06:10:26,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:10:26,578 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:10:26,733 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_spec3_product24.cil.c[74797,74810] [2020-12-22 06:10:26,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:10:26,828 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:10:26,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:26 WrapperNode [2020-12-22 06:10:26,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:10:26,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:10:26,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:10:26,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:10:26,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:26" (1/1) ... [2020-12-22 06:10:26,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:26" (1/1) ... [2020-12-22 06:10:28,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:10:28,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:10:28,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:10:28,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:10:28,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:26" (1/1) ... [2020-12-22 06:10:28,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:26" (1/1) ... [2020-12-22 06:10:28,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:26" (1/1) ... [2020-12-22 06:10:28,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:26" (1/1) ... [2020-12-22 06:10:28,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:26" (1/1) ... [2020-12-22 06:10:29,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:26" (1/1) ... [2020-12-22 06:10:29,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:26" (1/1) ... [2020-12-22 06:10:29,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:10:29,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:10:29,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:10:29,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:10:29,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:26" (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 06:10:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:10:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:10:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:10:29,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:11:02,991 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:11:02,991 INFO L299 CfgBuilder]: Removed 3937 assume(true) statements. [2020-12-22 06:11:03,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:11:03 BoogieIcfgContainer [2020-12-22 06:11:03,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:11:03,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:11:03,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:11:03,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:11:03,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:10:25" (1/3) ... [2020-12-22 06:11:03,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c11b902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:11:03, skipping insertion in model container [2020-12-22 06:11:03,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:26" (2/3) ... [2020-12-22 06:11:03,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c11b902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:11:03, skipping insertion in model container [2020-12-22 06:11:03,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:11:03" (3/3) ... [2020-12-22 06:11:03,032 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product24.cil.c [2020-12-22 06:11:03,040 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:11:03,053 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 06:11:03,082 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 06:11:03,234 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:11:03,234 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:11:03,235 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:11:03,235 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:11:03,235 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:11:03,235 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:11:03,235 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:11:03,236 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:11:03,531 INFO L276 IsEmpty]: Start isEmpty. Operand 17343 states. [2020-12-22 06:11:03,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 06:11:03,547 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:03,548 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] [2020-12-22 06:11:03,549 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:03,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:03,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2039424680, now seen corresponding path program 1 times [2020-12-22 06:11:03,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:03,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269641638] [2020-12-22 06:11:03,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:04,015 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 06:11:04,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269641638] [2020-12-22 06:11:04,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:04,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:11:04,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050341181] [2020-12-22 06:11:04,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:11:04,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:04,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:11:04,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:11:04,041 INFO L87 Difference]: Start difference. First operand 17343 states. Second operand 4 states. [2020-12-22 06:11:07,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:07,003 INFO L93 Difference]: Finished difference Result 69197 states and 130669 transitions. [2020-12-22 06:11:07,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:11:07,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-12-22 06:11:07,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:07,556 INFO L225 Difference]: With dead ends: 69197 [2020-12-22 06:11:07,556 INFO L226 Difference]: Without dead ends: 51867 [2020-12-22 06:11:07,630 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 06:11:07,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51867 states. [2020-12-22 06:11:08,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51867 to 17351. [2020-12-22 06:11:08,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17351 states. [2020-12-22 06:11:08,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17351 states to 17351 states and 32743 transitions. [2020-12-22 06:11:08,668 INFO L78 Accepts]: Start accepts. Automaton has 17351 states and 32743 transitions. Word has length 30 [2020-12-22 06:11:08,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:08,669 INFO L481 AbstractCegarLoop]: Abstraction has 17351 states and 32743 transitions. [2020-12-22 06:11:08,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:11:08,669 INFO L276 IsEmpty]: Start isEmpty. Operand 17351 states and 32743 transitions. [2020-12-22 06:11:08,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:11:08,679 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:08,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:11:08,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:11:08,681 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:08,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:08,684 INFO L82 PathProgramCache]: Analyzing trace with hash -419939863, now seen corresponding path program 1 times [2020-12-22 06:11:08,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:08,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283045285] [2020-12-22 06:11:08,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:08,875 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 06:11:08,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283045285] [2020-12-22 06:11:08,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:08,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:11:08,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344439835] [2020-12-22 06:11:08,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:11:08,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:08,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:11:08,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:11:08,880 INFO L87 Difference]: Start difference. First operand 17351 states and 32743 transitions. Second operand 3 states. [2020-12-22 06:11:09,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:09,663 INFO L93 Difference]: Finished difference Result 34618 states and 65333 transitions. [2020-12-22 06:11:09,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:11:09,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-12-22 06:11:09,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:09,748 INFO L225 Difference]: With dead ends: 34618 [2020-12-22 06:11:09,748 INFO L226 Difference]: Without dead ends: 17281 [2020-12-22 06:11:09,788 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 06:11:09,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17281 states. [2020-12-22 06:11:10,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17281 to 17281. [2020-12-22 06:11:10,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17281 states. [2020-12-22 06:11:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17281 states to 17281 states and 32603 transitions. [2020-12-22 06:11:10,395 INFO L78 Accepts]: Start accepts. Automaton has 17281 states and 32603 transitions. Word has length 31 [2020-12-22 06:11:10,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:10,398 INFO L481 AbstractCegarLoop]: Abstraction has 17281 states and 32603 transitions. [2020-12-22 06:11:10,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:11:10,399 INFO L276 IsEmpty]: Start isEmpty. Operand 17281 states and 32603 transitions. [2020-12-22 06:11:10,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 06:11:10,400 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:10,400 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] [2020-12-22 06:11:10,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:11:10,401 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:10,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:10,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1807218912, now seen corresponding path program 1 times [2020-12-22 06:11:10,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:10,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943924695] [2020-12-22 06:11:10,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:10,532 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 06:11:10,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943924695] [2020-12-22 06:11:10,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:10,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:11:10,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109484250] [2020-12-22 06:11:10,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:11:10,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:10,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:11:10,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:11:10,535 INFO L87 Difference]: Start difference. First operand 17281 states and 32603 transitions. Second operand 4 states. [2020-12-22 06:11:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:11,373 INFO L93 Difference]: Finished difference Result 34536 states and 65169 transitions. [2020-12-22 06:11:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:11:11,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-22 06:11:11,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:11,428 INFO L225 Difference]: With dead ends: 34536 [2020-12-22 06:11:11,428 INFO L226 Difference]: Without dead ends: 17281 [2020-12-22 06:11:11,460 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 06:11:11,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17281 states. [2020-12-22 06:11:12,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17281 to 17281. [2020-12-22 06:11:12,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17281 states. [2020-12-22 06:11:12,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17281 states to 17281 states and 32601 transitions. [2020-12-22 06:11:12,109 INFO L78 Accepts]: Start accepts. Automaton has 17281 states and 32601 transitions. Word has length 34 [2020-12-22 06:11:12,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:12,117 INFO L481 AbstractCegarLoop]: Abstraction has 17281 states and 32601 transitions. [2020-12-22 06:11:12,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:11:12,118 INFO L276 IsEmpty]: Start isEmpty. Operand 17281 states and 32601 transitions. [2020-12-22 06:11:12,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 06:11:12,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:12,122 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] [2020-12-22 06:11:12,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:11:12,122 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:12,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:12,123 INFO L82 PathProgramCache]: Analyzing trace with hash -204771877, now seen corresponding path program 1 times [2020-12-22 06:11:12,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:12,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146044926] [2020-12-22 06:11:12,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:12,235 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 06:11:12,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146044926] [2020-12-22 06:11:12,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:12,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:11:12,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270583546] [2020-12-22 06:11:12,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:11:12,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:12,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:11:12,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:11:12,240 INFO L87 Difference]: Start difference. First operand 17281 states and 32601 transitions. Second operand 4 states. [2020-12-22 06:11:13,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:13,091 INFO L93 Difference]: Finished difference Result 34536 states and 65166 transitions. [2020-12-22 06:11:13,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:11:13,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-22 06:11:13,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:13,150 INFO L225 Difference]: With dead ends: 34536 [2020-12-22 06:11:13,150 INFO L226 Difference]: Without dead ends: 17281 [2020-12-22 06:11:13,180 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 06:11:13,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17281 states. [2020-12-22 06:11:13,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17281 to 17281. [2020-12-22 06:11:13,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17281 states. [2020-12-22 06:11:13,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17281 states to 17281 states and 32599 transitions. [2020-12-22 06:11:13,801 INFO L78 Accepts]: Start accepts. Automaton has 17281 states and 32599 transitions. Word has length 35 [2020-12-22 06:11:13,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:13,801 INFO L481 AbstractCegarLoop]: Abstraction has 17281 states and 32599 transitions. [2020-12-22 06:11:13,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:11:13,802 INFO L276 IsEmpty]: Start isEmpty. Operand 17281 states and 32599 transitions. [2020-12-22 06:11:13,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 06:11:13,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:13,803 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] [2020-12-22 06:11:13,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:11:13,803 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:13,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:13,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1536051483, now seen corresponding path program 1 times [2020-12-22 06:11:13,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:13,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160506386] [2020-12-22 06:11:13,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:11:13,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160506386] [2020-12-22 06:11:13,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:13,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:11:13,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597700930] [2020-12-22 06:11:13,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:11:13,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:13,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:11:13,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:11:13,908 INFO L87 Difference]: Start difference. First operand 17281 states and 32599 transitions. Second operand 4 states. [2020-12-22 06:11:14,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:14,885 INFO L93 Difference]: Finished difference Result 34536 states and 65163 transitions. [2020-12-22 06:11:14,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:11:14,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-22 06:11:14,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:14,956 INFO L225 Difference]: With dead ends: 34536 [2020-12-22 06:11:14,956 INFO L226 Difference]: Without dead ends: 17281 [2020-12-22 06:11:14,982 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 06:11:15,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17281 states. [2020-12-22 06:11:15,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17281 to 17281. [2020-12-22 06:11:15,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17281 states. [2020-12-22 06:11:15,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17281 states to 17281 states and 32597 transitions. [2020-12-22 06:11:15,689 INFO L78 Accepts]: Start accepts. Automaton has 17281 states and 32597 transitions. Word has length 36 [2020-12-22 06:11:15,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:15,690 INFO L481 AbstractCegarLoop]: Abstraction has 17281 states and 32597 transitions. [2020-12-22 06:11:15,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:11:15,690 INFO L276 IsEmpty]: Start isEmpty. Operand 17281 states and 32597 transitions. [2020-12-22 06:11:15,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 06:11:15,691 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:15,691 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] [2020-12-22 06:11:15,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:11:15,692 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:15,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:15,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1023393674, now seen corresponding path program 1 times [2020-12-22 06:11:15,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:15,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062342782] [2020-12-22 06:11:15,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:15,772 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 06:11:15,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062342782] [2020-12-22 06:11:15,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:15,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:11:15,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135076607] [2020-12-22 06:11:15,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:11:15,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:15,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:11:15,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:11:15,776 INFO L87 Difference]: Start difference. First operand 17281 states and 32597 transitions. Second operand 4 states. [2020-12-22 06:11:16,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:16,441 INFO L93 Difference]: Finished difference Result 34536 states and 65160 transitions. [2020-12-22 06:11:16,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:11:16,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-12-22 06:11:16,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:16,495 INFO L225 Difference]: With dead ends: 34536 [2020-12-22 06:11:16,495 INFO L226 Difference]: Without dead ends: 17281 [2020-12-22 06:11:16,513 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 06:11:16,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17281 states. [2020-12-22 06:11:17,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17281 to 17281. [2020-12-22 06:11:17,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17281 states. [2020-12-22 06:11:17,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17281 states to 17281 states and 32595 transitions. [2020-12-22 06:11:17,161 INFO L78 Accepts]: Start accepts. Automaton has 17281 states and 32595 transitions. Word has length 37 [2020-12-22 06:11:17,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:17,161 INFO L481 AbstractCegarLoop]: Abstraction has 17281 states and 32595 transitions. [2020-12-22 06:11:17,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:11:17,161 INFO L276 IsEmpty]: Start isEmpty. Operand 17281 states and 32595 transitions. [2020-12-22 06:11:17,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 06:11:17,162 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:17,162 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] [2020-12-22 06:11:17,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:11:17,163 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:17,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:17,169 INFO L82 PathProgramCache]: Analyzing trace with hash 547790614, now seen corresponding path program 1 times [2020-12-22 06:11:17,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:17,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287869637] [2020-12-22 06:11:17,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:17,331 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 06:11:17,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287869637] [2020-12-22 06:11:17,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:17,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:11:17,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725478759] [2020-12-22 06:11:17,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:11:17,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:17,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:11:17,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:11:17,336 INFO L87 Difference]: Start difference. First operand 17281 states and 32595 transitions. Second operand 7 states. [2020-12-22 06:11:21,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:21,335 INFO L93 Difference]: Finished difference Result 62017 states and 116908 transitions. [2020-12-22 06:11:21,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:11:21,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-12-22 06:11:21,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:21,625 INFO L225 Difference]: With dead ends: 62017 [2020-12-22 06:11:21,625 INFO L226 Difference]: Without dead ends: 44806 [2020-12-22 06:11:21,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:11:21,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44806 states. [2020-12-22 06:11:23,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44806 to 30792. [2020-12-22 06:11:23,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30792 states. [2020-12-22 06:11:23,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30792 states to 30792 states and 58080 transitions. [2020-12-22 06:11:23,309 INFO L78 Accepts]: Start accepts. Automaton has 30792 states and 58080 transitions. Word has length 38 [2020-12-22 06:11:23,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:23,310 INFO L481 AbstractCegarLoop]: Abstraction has 30792 states and 58080 transitions. [2020-12-22 06:11:23,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:11:23,310 INFO L276 IsEmpty]: Start isEmpty. Operand 30792 states and 58080 transitions. [2020-12-22 06:11:23,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 06:11:23,310 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:23,310 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] [2020-12-22 06:11:23,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:11:23,311 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:23,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:23,311 INFO L82 PathProgramCache]: Analyzing trace with hash -144923343, now seen corresponding path program 1 times [2020-12-22 06:11:23,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:23,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890700880] [2020-12-22 06:11:23,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:23,387 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 06:11:23,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890700880] [2020-12-22 06:11:23,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:23,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:11:23,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741654800] [2020-12-22 06:11:23,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:11:23,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:23,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:11:23,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:23,390 INFO L87 Difference]: Start difference. First operand 30792 states and 58080 transitions. Second operand 5 states. [2020-12-22 06:11:35,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:35,579 INFO L93 Difference]: Finished difference Result 254969 states and 480989 transitions. [2020-12-22 06:11:35,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:11:35,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 06:11:35,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:36,297 INFO L225 Difference]: With dead ends: 254969 [2020-12-22 06:11:36,298 INFO L226 Difference]: Without dead ends: 224247 [2020-12-22 06:11:36,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:11:36,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224247 states. [2020-12-22 06:11:40,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224247 to 56867. [2020-12-22 06:11:40,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56867 states. [2020-12-22 06:11:40,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56867 states to 56867 states and 107048 transitions. [2020-12-22 06:11:40,104 INFO L78 Accepts]: Start accepts. Automaton has 56867 states and 107048 transitions. Word has length 38 [2020-12-22 06:11:40,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:40,104 INFO L481 AbstractCegarLoop]: Abstraction has 56867 states and 107048 transitions. [2020-12-22 06:11:40,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:11:40,105 INFO L276 IsEmpty]: Start isEmpty. Operand 56867 states and 107048 transitions. [2020-12-22 06:11:40,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 06:11:40,105 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:40,106 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] [2020-12-22 06:11:40,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:11:40,106 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:40,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:40,106 INFO L82 PathProgramCache]: Analyzing trace with hash 531478701, now seen corresponding path program 1 times [2020-12-22 06:11:40,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:40,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410954960] [2020-12-22 06:11:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:40,162 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 06:11:40,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410954960] [2020-12-22 06:11:40,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:40,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:11:40,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849920093] [2020-12-22 06:11:40,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:11:40,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:40,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:11:40,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:11:40,165 INFO L87 Difference]: Start difference. First operand 56867 states and 107048 transitions. Second operand 3 states. [2020-12-22 06:11:45,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:45,043 INFO L93 Difference]: Finished difference Result 169121 states and 318308 transitions. [2020-12-22 06:11:45,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:11:45,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-22 06:11:45,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:45,279 INFO L225 Difference]: With dead ends: 169121 [2020-12-22 06:11:45,279 INFO L226 Difference]: Without dead ends: 112286 [2020-12-22 06:11:45,336 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 06:11:45,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112286 states. [2020-12-22 06:11:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112286 to 56743. [2020-12-22 06:11:47,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56743 states. [2020-12-22 06:11:47,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56743 states to 56743 states and 106800 transitions. [2020-12-22 06:11:47,808 INFO L78 Accepts]: Start accepts. Automaton has 56743 states and 106800 transitions. Word has length 39 [2020-12-22 06:11:47,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:47,809 INFO L481 AbstractCegarLoop]: Abstraction has 56743 states and 106800 transitions. [2020-12-22 06:11:47,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:11:47,809 INFO L276 IsEmpty]: Start isEmpty. Operand 56743 states and 106800 transitions. [2020-12-22 06:11:47,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 06:11:47,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:47,810 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] [2020-12-22 06:11:47,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:11:47,810 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:47,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:47,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1710844854, now seen corresponding path program 1 times [2020-12-22 06:11:47,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:47,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793360219] [2020-12-22 06:11:47,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:47,899 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 06:11:47,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793360219] [2020-12-22 06:11:47,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:47,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:11:47,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809741667] [2020-12-22 06:11:47,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:11:47,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:47,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:11:47,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:47,901 INFO L87 Difference]: Start difference. First operand 56743 states and 106800 transitions. Second operand 5 states. [2020-12-22 06:11:59,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:59,191 INFO L93 Difference]: Finished difference Result 132166 states and 248541 transitions. [2020-12-22 06:11:59,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:11:59,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-12-22 06:11:59,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:59,306 INFO L225 Difference]: With dead ends: 132166 [2020-12-22 06:11:59,307 INFO L226 Difference]: Without dead ends: 75457 [2020-12-22 06:11:59,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 06:11:59,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75457 states. [2020-12-22 06:12:02,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75457 to 74997. [2020-12-22 06:12:02,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74997 states. [2020-12-22 06:12:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74997 states to 74997 states and 138772 transitions. [2020-12-22 06:12:02,323 INFO L78 Accepts]: Start accepts. Automaton has 74997 states and 138772 transitions. Word has length 39 [2020-12-22 06:12:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:02,323 INFO L481 AbstractCegarLoop]: Abstraction has 74997 states and 138772 transitions. [2020-12-22 06:12:02,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:12:02,331 INFO L276 IsEmpty]: Start isEmpty. Operand 74997 states and 138772 transitions. [2020-12-22 06:12:02,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 06:12:02,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:02,332 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] [2020-12-22 06:12:02,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:12:02,332 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:02,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:02,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1699187511, now seen corresponding path program 1 times [2020-12-22 06:12:02,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:02,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993235562] [2020-12-22 06:12:02,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:02,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:12:02,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993235562] [2020-12-22 06:12:02,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:02,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:12:02,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739294527] [2020-12-22 06:12:02,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:12:02,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:02,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:12:02,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:12:02,408 INFO L87 Difference]: Start difference. First operand 74997 states and 138772 transitions. Second operand 5 states. [2020-12-22 06:12:08,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:08,909 INFO L93 Difference]: Finished difference Result 222797 states and 412280 transitions. [2020-12-22 06:12:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:12:08,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-12-22 06:12:08,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:09,386 INFO L225 Difference]: With dead ends: 222797 [2020-12-22 06:12:09,386 INFO L226 Difference]: Without dead ends: 147840 [2020-12-22 06:12:09,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 06:12:09,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147840 states. [2020-12-22 06:12:12,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147840 to 74997. [2020-12-22 06:12:12,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74997 states. [2020-12-22 06:12:12,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74997 states to 74997 states and 138661 transitions. [2020-12-22 06:12:12,774 INFO L78 Accepts]: Start accepts. Automaton has 74997 states and 138661 transitions. Word has length 42 [2020-12-22 06:12:12,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:12,775 INFO L481 AbstractCegarLoop]: Abstraction has 74997 states and 138661 transitions. [2020-12-22 06:12:12,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:12:12,775 INFO L276 IsEmpty]: Start isEmpty. Operand 74997 states and 138661 transitions. [2020-12-22 06:12:12,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 06:12:12,775 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:12,776 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] [2020-12-22 06:12:12,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:12:12,776 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:12,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:12,777 INFO L82 PathProgramCache]: Analyzing trace with hash 519837646, now seen corresponding path program 1 times [2020-12-22 06:12:12,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:12,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298964390] [2020-12-22 06:12:12,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:12,848 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 06:12:12,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298964390] [2020-12-22 06:12:12,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:12,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:12:12,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032605818] [2020-12-22 06:12:12,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:12:12,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:12,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:12:12,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:12:12,851 INFO L87 Difference]: Start difference. First operand 74997 states and 138661 transitions. Second operand 5 states. [2020-12-22 06:12:36,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:36,288 INFO L93 Difference]: Finished difference Result 638391 states and 1181539 transitions. [2020-12-22 06:12:36,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:12:36,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-12-22 06:12:36,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:37,906 INFO L225 Difference]: With dead ends: 638391 [2020-12-22 06:12:37,906 INFO L226 Difference]: Without dead ends: 563453 [2020-12-22 06:12:38,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:12:38,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563453 states. [2020-12-22 06:12:50,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563453 to 143169. [2020-12-22 06:12:50,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143169 states. [2020-12-22 06:12:51,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143169 states to 143169 states and 264306 transitions. [2020-12-22 06:12:51,362 INFO L78 Accepts]: Start accepts. Automaton has 143169 states and 264306 transitions. Word has length 43 [2020-12-22 06:12:51,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:51,362 INFO L481 AbstractCegarLoop]: Abstraction has 143169 states and 264306 transitions. [2020-12-22 06:12:51,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:12:51,362 INFO L276 IsEmpty]: Start isEmpty. Operand 143169 states and 264306 transitions. [2020-12-22 06:12:51,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 06:12:51,363 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:51,363 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] [2020-12-22 06:12:51,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:12:51,363 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:51,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:51,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1235554372, now seen corresponding path program 1 times [2020-12-22 06:12:51,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:51,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167186609] [2020-12-22 06:12:51,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:51,420 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 06:12:51,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167186609] [2020-12-22 06:12:51,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:51,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:12:51,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384843480] [2020-12-22 06:12:51,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:12:51,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:51,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:12:51,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:12:51,423 INFO L87 Difference]: Start difference. First operand 143169 states and 264306 transitions. Second operand 3 states. [2020-12-22 06:13:02,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:02,792 INFO L93 Difference]: Finished difference Result 426030 states and 786598 transitions. [2020-12-22 06:13:02,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:13:02,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 06:13:02,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:03,367 INFO L225 Difference]: With dead ends: 426030 [2020-12-22 06:13:03,367 INFO L226 Difference]: Without dead ends: 282898 [2020-12-22 06:13:03,524 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 06:13:03,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282898 states. [2020-12-22 06:13:10,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282898 to 142915. [2020-12-22 06:13:10,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142915 states. [2020-12-22 06:13:10,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142915 states to 142915 states and 263805 transitions. [2020-12-22 06:13:10,821 INFO L78 Accepts]: Start accepts. Automaton has 142915 states and 263805 transitions. Word has length 44 [2020-12-22 06:13:10,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:10,821 INFO L481 AbstractCegarLoop]: Abstraction has 142915 states and 263805 transitions. [2020-12-22 06:13:10,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:13:10,821 INFO L276 IsEmpty]: Start isEmpty. Operand 142915 states and 263805 transitions. [2020-12-22 06:13:10,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 06:13:10,822 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:10,822 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] [2020-12-22 06:13:10,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:13:10,823 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:10,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:10,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1207180490, now seen corresponding path program 1 times [2020-12-22 06:13:10,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:10,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270001644] [2020-12-22 06:13:10,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:10,892 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 06:13:10,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270001644] [2020-12-22 06:13:10,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:10,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:13:10,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335565210] [2020-12-22 06:13:10,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:13:10,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:10,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:13:10,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:13:10,895 INFO L87 Difference]: Start difference. First operand 142915 states and 263805 transitions. Second operand 3 states. [2020-12-22 06:13:22,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:22,487 INFO L93 Difference]: Finished difference Result 425529 states and 785625 transitions. [2020-12-22 06:13:22,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:13:22,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-12-22 06:13:22,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:23,245 INFO L225 Difference]: With dead ends: 425529 [2020-12-22 06:13:23,245 INFO L226 Difference]: Without dead ends: 282657 [2020-12-22 06:13:23,412 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 06:13:23,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282657 states. [2020-12-22 06:13:30,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282657 to 142803. [2020-12-22 06:13:30,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142803 states. [2020-12-22 06:13:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142803 states to 142803 states and 263469 transitions. [2020-12-22 06:13:30,969 INFO L78 Accepts]: Start accepts. Automaton has 142803 states and 263469 transitions. Word has length 48 [2020-12-22 06:13:30,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:30,969 INFO L481 AbstractCegarLoop]: Abstraction has 142803 states and 263469 transitions. [2020-12-22 06:13:30,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:13:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 142803 states and 263469 transitions. [2020-12-22 06:13:30,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:13:30,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:30,970 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] [2020-12-22 06:13:30,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:13:30,970 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:30,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:30,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1994253953, now seen corresponding path program 1 times [2020-12-22 06:13:30,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:30,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630085987] [2020-12-22 06:13:30,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:31,044 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 06:13:31,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630085987] [2020-12-22 06:13:31,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:31,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:13:31,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005985416] [2020-12-22 06:13:31,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:13:31,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:31,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:13:31,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:13:31,046 INFO L87 Difference]: Start difference. First operand 142803 states and 263469 transitions. Second operand 5 states.