/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_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:08:25,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:08:25,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:08:25,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:08:25,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:08:25,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:08:25,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:08:25,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:08:25,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:08:25,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:08:25,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:08:25,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:08:25,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:08:25,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:08:25,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:08:25,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:08:25,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:08:25,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:08:25,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:08:25,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:08:25,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:08:25,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:08:25,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:08:25,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:08:25,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:08:25,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:08:25,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:08:25,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:08:25,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:08:25,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:08:25,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:08:25,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:08:25,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:08:25,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:08:25,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:08:25,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:08:25,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:08:25,405 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:08:25,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:08:25,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:08:25,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:08:25,408 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:08:25,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:08:25,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:08:25,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:08:25,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:08:25,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:08:25,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:08:25,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:08:25,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:08:25,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:08:25,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:08:25,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:08:25,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:08:25,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:08:25,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:08:25,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:08:25,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:08:25,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:08:25,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:08:25,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:08:25,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:08:25,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:08:25,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:08:25,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:08:25,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:08:25,816 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:08:25,816 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:08:25,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c [2020-12-22 06:08:25,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6de550ae/3874489e15924c5dbe6f681bd102e675/FLAG3978a72fd [2020-12-22 06:08:26,713 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:08:26,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c [2020-12-22 06:08:26,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6de550ae/3874489e15924c5dbe6f681bd102e675/FLAG3978a72fd [2020-12-22 06:08:26,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6de550ae/3874489e15924c5dbe6f681bd102e675 [2020-12-22 06:08:26,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:08:26,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:08:26,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:08:26,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:08:26,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:08:26,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:08:26" (1/1) ... [2020-12-22 06:08:26,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cdc8a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:26, skipping insertion in model container [2020-12-22 06:08:26,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:08:26" (1/1) ... [2020-12-22 06:08:26,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:08:26,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:08:27,613 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_product03.cil.c[33032,33045] [2020-12-22 06:08:27,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:08:27,851 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:08:27,903 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_product03.cil.c[33032,33045] [2020-12-22 06:08:28,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:08:28,119 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:08:28,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:28 WrapperNode [2020-12-22 06:08:28,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:08:28,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:08:28,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:08:28,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:08:28,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:28" (1/1) ... [2020-12-22 06:08:28,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:28" (1/1) ... [2020-12-22 06:08:28,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:08:28,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:08:28,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:08:28,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:08:28,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:28" (1/1) ... [2020-12-22 06:08:28,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:28" (1/1) ... [2020-12-22 06:08:28,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:28" (1/1) ... [2020-12-22 06:08:28,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:28" (1/1) ... [2020-12-22 06:08:28,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:28" (1/1) ... [2020-12-22 06:08:28,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:28" (1/1) ... [2020-12-22 06:08:28,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:28" (1/1) ... [2020-12-22 06:08:29,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:08:29,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:08:29,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:08:29,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:08:29,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:08:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:08:29,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:08:29,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:08:29,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:08:41,723 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:08:41,724 INFO L299 CfgBuilder]: Removed 1257 assume(true) statements. [2020-12-22 06:08:41,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:08:41 BoogieIcfgContainer [2020-12-22 06:08:41,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:08:41,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:08:41,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:08:41,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:08:41,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:08:26" (1/3) ... [2020-12-22 06:08:41,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626cc6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:08:41, skipping insertion in model container [2020-12-22 06:08:41,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:28" (2/3) ... [2020-12-22 06:08:41,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626cc6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:08:41, skipping insertion in model container [2020-12-22 06:08:41,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:08:41" (3/3) ... [2020-12-22 06:08:41,752 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product03.cil.c [2020-12-22 06:08:41,759 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:08:41,767 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 06:08:41,792 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 06:08:41,869 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:08:41,869 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:08:41,869 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:08:41,870 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:08:41,870 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:08:41,870 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:08:41,870 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:08:41,870 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:08:41,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5823 states. [2020-12-22 06:08:42,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 06:08:42,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:42,006 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] [2020-12-22 06:08:42,007 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 06:08:42,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:42,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1560019917, now seen corresponding path program 1 times [2020-12-22 06:08:42,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:42,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358389478] [2020-12-22 06:08:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:42,620 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 06:08:42,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358389478] [2020-12-22 06:08:42,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:42,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:08:42,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906282181] [2020-12-22 06:08:42,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:08:42,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:42,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:08:42,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:42,649 INFO L87 Difference]: Start difference. First operand 5823 states. Second operand 4 states. [2020-12-22 06:08:43,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:43,791 INFO L93 Difference]: Finished difference Result 23117 states and 43769 transitions. [2020-12-22 06:08:43,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:08:43,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-12-22 06:08:43,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:43,970 INFO L225 Difference]: With dead ends: 23117 [2020-12-22 06:08:43,970 INFO L226 Difference]: Without dead ends: 17307 [2020-12-22 06:08:44,005 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 06:08:44,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17307 states. [2020-12-22 06:08:44,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17307 to 5831. [2020-12-22 06:08:44,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5831 states. [2020-12-22 06:08:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5831 states to 5831 states and 11018 transitions. [2020-12-22 06:08:44,443 INFO L78 Accepts]: Start accepts. Automaton has 5831 states and 11018 transitions. Word has length 47 [2020-12-22 06:08:44,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:44,444 INFO L481 AbstractCegarLoop]: Abstraction has 5831 states and 11018 transitions. [2020-12-22 06:08:44,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:08:44,444 INFO L276 IsEmpty]: Start isEmpty. Operand 5831 states and 11018 transitions. [2020-12-22 06:08:44,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 06:08:44,454 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:44,454 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 06:08:44,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:08:44,456 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 06:08:44,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:44,458 INFO L82 PathProgramCache]: Analyzing trace with hash 193313452, now seen corresponding path program 1 times [2020-12-22 06:08:44,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:44,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618776433] [2020-12-22 06:08:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:44,684 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 06:08:44,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618776433] [2020-12-22 06:08:44,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:44,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:08:44,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6255498] [2020-12-22 06:08:44,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:08:44,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:44,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:08:44,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:08:44,691 INFO L87 Difference]: Start difference. First operand 5831 states and 11018 transitions. Second operand 3 states. [2020-12-22 06:08:44,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:44,891 INFO L93 Difference]: Finished difference Result 11578 states and 21883 transitions. [2020-12-22 06:08:44,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:08:44,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-12-22 06:08:44,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:44,948 INFO L225 Difference]: With dead ends: 11578 [2020-12-22 06:08:44,948 INFO L226 Difference]: Without dead ends: 5761 [2020-12-22 06:08:44,960 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 06:08:44,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5761 states. [2020-12-22 06:08:45,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5761 to 5761. [2020-12-22 06:08:45,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5761 states. [2020-12-22 06:08:45,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 10878 transitions. [2020-12-22 06:08:45,467 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 10878 transitions. Word has length 48 [2020-12-22 06:08:45,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:45,468 INFO L481 AbstractCegarLoop]: Abstraction has 5761 states and 10878 transitions. [2020-12-22 06:08:45,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:08:45,468 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 10878 transitions. [2020-12-22 06:08:45,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:08:45,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:45,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:08:45,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:08:45,473 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 06:08:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:45,475 INFO L82 PathProgramCache]: Analyzing trace with hash -746511787, now seen corresponding path program 1 times [2020-12-22 06:08:45,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:45,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481424257] [2020-12-22 06:08:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:45,626 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 06:08:45,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481424257] [2020-12-22 06:08:45,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:45,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:08:45,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848474959] [2020-12-22 06:08:45,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:08:45,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:45,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:08:45,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:45,630 INFO L87 Difference]: Start difference. First operand 5761 states and 10878 transitions. Second operand 4 states. [2020-12-22 06:08:46,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:46,018 INFO L93 Difference]: Finished difference Result 11496 states and 21719 transitions. [2020-12-22 06:08:46,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:08:46,019 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 06:08:46,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:46,035 INFO L225 Difference]: With dead ends: 11496 [2020-12-22 06:08:46,036 INFO L226 Difference]: Without dead ends: 5761 [2020-12-22 06:08:46,046 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 06:08:46,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5761 states. [2020-12-22 06:08:46,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5761 to 5761. [2020-12-22 06:08:46,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5761 states. [2020-12-22 06:08:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 10876 transitions. [2020-12-22 06:08:46,332 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 10876 transitions. Word has length 51 [2020-12-22 06:08:46,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:46,339 INFO L481 AbstractCegarLoop]: Abstraction has 5761 states and 10876 transitions. [2020-12-22 06:08:46,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:08:46,340 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 10876 transitions. [2020-12-22 06:08:46,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:08:46,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:46,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:08:46,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:08:46,346 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 06:08:46,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:46,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1056528134, now seen corresponding path program 1 times [2020-12-22 06:08:46,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:46,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697882187] [2020-12-22 06:08:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:46,467 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 06:08:46,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697882187] [2020-12-22 06:08:46,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:46,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:08:46,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649843904] [2020-12-22 06:08:46,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:08:46,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:46,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:08:46,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:46,471 INFO L87 Difference]: Start difference. First operand 5761 states and 10876 transitions. Second operand 4 states. [2020-12-22 06:08:46,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:46,763 INFO L93 Difference]: Finished difference Result 11496 states and 21716 transitions. [2020-12-22 06:08:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:08:46,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 06:08:46,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:46,783 INFO L225 Difference]: With dead ends: 11496 [2020-12-22 06:08:46,784 INFO L226 Difference]: Without dead ends: 5761 [2020-12-22 06:08:46,796 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 06:08:46,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5761 states. [2020-12-22 06:08:47,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5761 to 5761. [2020-12-22 06:08:47,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5761 states. [2020-12-22 06:08:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 10874 transitions. [2020-12-22 06:08:47,115 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 10874 transitions. Word has length 52 [2020-12-22 06:08:47,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:47,115 INFO L481 AbstractCegarLoop]: Abstraction has 5761 states and 10874 transitions. [2020-12-22 06:08:47,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:08:47,115 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 10874 transitions. [2020-12-22 06:08:47,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:08:47,117 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:47,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:08:47,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:08:47,118 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 06:08:47,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:47,118 INFO L82 PathProgramCache]: Analyzing trace with hash -2039630406, now seen corresponding path program 1 times [2020-12-22 06:08:47,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:47,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551716863] [2020-12-22 06:08:47,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:47,222 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 06:08:47,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551716863] [2020-12-22 06:08:47,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:47,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:08:47,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411700153] [2020-12-22 06:08:47,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:08:47,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:47,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:08:47,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:47,226 INFO L87 Difference]: Start difference. First operand 5761 states and 10874 transitions. Second operand 4 states. [2020-12-22 06:08:47,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:47,490 INFO L93 Difference]: Finished difference Result 11496 states and 21713 transitions. [2020-12-22 06:08:47,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:08:47,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 06:08:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:47,513 INFO L225 Difference]: With dead ends: 11496 [2020-12-22 06:08:47,513 INFO L226 Difference]: Without dead ends: 5761 [2020-12-22 06:08:47,525 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 06:08:47,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5761 states. [2020-12-22 06:08:47,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5761 to 5761. [2020-12-22 06:08:47,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5761 states. [2020-12-22 06:08:47,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 10872 transitions. [2020-12-22 06:08:47,821 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 10872 transitions. Word has length 53 [2020-12-22 06:08:47,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:47,822 INFO L481 AbstractCegarLoop]: Abstraction has 5761 states and 10872 transitions. [2020-12-22 06:08:47,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:08:47,822 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 10872 transitions. [2020-12-22 06:08:47,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:08:47,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:47,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:08:47,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:08:47,825 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 06:08:47,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:47,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1881407423, now seen corresponding path program 1 times [2020-12-22 06:08:47,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:47,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772738480] [2020-12-22 06:08:47,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:47,895 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 06:08:47,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772738480] [2020-12-22 06:08:47,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:47,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:08:47,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171158661] [2020-12-22 06:08:47,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:08:47,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:47,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:08:47,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:47,898 INFO L87 Difference]: Start difference. First operand 5761 states and 10872 transitions. Second operand 4 states. [2020-12-22 06:08:48,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:48,255 INFO L93 Difference]: Finished difference Result 11496 states and 21710 transitions. [2020-12-22 06:08:48,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:08:48,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 06:08:48,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:48,272 INFO L225 Difference]: With dead ends: 11496 [2020-12-22 06:08:48,273 INFO L226 Difference]: Without dead ends: 5761 [2020-12-22 06:08:48,281 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 06:08:48,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5761 states. [2020-12-22 06:08:48,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5761 to 5761. [2020-12-22 06:08:48,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5761 states. [2020-12-22 06:08:48,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 10870 transitions. [2020-12-22 06:08:48,483 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 10870 transitions. Word has length 54 [2020-12-22 06:08:48,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:48,483 INFO L481 AbstractCegarLoop]: Abstraction has 5761 states and 10870 transitions. [2020-12-22 06:08:48,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:08:48,483 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 10870 transitions. [2020-12-22 06:08:48,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:08:48,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:48,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:08:48,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:08:48,486 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 06:08:48,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:48,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1083001569, now seen corresponding path program 1 times [2020-12-22 06:08:48,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:48,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276983472] [2020-12-22 06:08:48,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:48,585 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 06:08:48,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276983472] [2020-12-22 06:08:48,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:48,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:08:48,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428689003] [2020-12-22 06:08:48,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:08:48,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:48,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:08:48,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:08:48,589 INFO L87 Difference]: Start difference. First operand 5761 states and 10870 transitions. Second operand 5 states. [2020-12-22 06:08:49,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:49,942 INFO L93 Difference]: Finished difference Result 16269 states and 30571 transitions. [2020-12-22 06:08:49,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:08:49,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 06:08:49,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:49,979 INFO L225 Difference]: With dead ends: 16269 [2020-12-22 06:08:49,980 INFO L226 Difference]: Without dead ends: 10578 [2020-12-22 06:08:49,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 06:08:50,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10578 states. [2020-12-22 06:08:50,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10578 to 10113. [2020-12-22 06:08:50,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10113 states. [2020-12-22 06:08:50,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10113 states to 10113 states and 19096 transitions. [2020-12-22 06:08:50,520 INFO L78 Accepts]: Start accepts. Automaton has 10113 states and 19096 transitions. Word has length 55 [2020-12-22 06:08:50,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:50,521 INFO L481 AbstractCegarLoop]: Abstraction has 10113 states and 19096 transitions. [2020-12-22 06:08:50,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:08:50,521 INFO L276 IsEmpty]: Start isEmpty. Operand 10113 states and 19096 transitions. [2020-12-22 06:08:50,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:08:50,523 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:50,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:08:50,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:08:50,524 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 06:08:50,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:50,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1785333342, now seen corresponding path program 1 times [2020-12-22 06:08:50,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:50,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660800213] [2020-12-22 06:08:50,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:50,641 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 06:08:50,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660800213] [2020-12-22 06:08:50,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:50,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:08:50,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664740948] [2020-12-22 06:08:50,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:08:50,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:50,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:08:50,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:08:50,644 INFO L87 Difference]: Start difference. First operand 10113 states and 19096 transitions. Second operand 5 states. [2020-12-22 06:08:55,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:55,444 INFO L93 Difference]: Finished difference Result 83722 states and 158249 transitions. [2020-12-22 06:08:55,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:08:55,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 06:08:55,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:55,765 INFO L225 Difference]: With dead ends: 83722 [2020-12-22 06:08:55,765 INFO L226 Difference]: Without dead ends: 73679 [2020-12-22 06:08:55,816 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 06:08:55,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73679 states. [2020-12-22 06:08:57,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73679 to 18985. [2020-12-22 06:08:57,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18985 states. [2020-12-22 06:08:57,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18985 states to 18985 states and 35845 transitions. [2020-12-22 06:08:57,155 INFO L78 Accepts]: Start accepts. Automaton has 18985 states and 35845 transitions. Word has length 55 [2020-12-22 06:08:57,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:57,156 INFO L481 AbstractCegarLoop]: Abstraction has 18985 states and 35845 transitions. [2020-12-22 06:08:57,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:08:57,156 INFO L276 IsEmpty]: Start isEmpty. Operand 18985 states and 35845 transitions. [2020-12-22 06:08:57,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:08:57,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:57,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:08:57,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:08:57,158 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 06:08:57,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:57,159 INFO L82 PathProgramCache]: Analyzing trace with hash 64408998, now seen corresponding path program 1 times [2020-12-22 06:08:57,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:57,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509250652] [2020-12-22 06:08:57,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:57,354 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 06:08:57,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509250652] [2020-12-22 06:08:57,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:57,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:08:57,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015645630] [2020-12-22 06:08:57,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:08:57,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:57,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:08:57,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:08:57,362 INFO L87 Difference]: Start difference. First operand 18985 states and 35845 transitions. Second operand 3 states. [2020-12-22 06:08:59,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:59,179 INFO L93 Difference]: Finished difference Result 55955 states and 105659 transitions. [2020-12-22 06:08:59,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:08:59,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 06:08:59,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:59,283 INFO L225 Difference]: With dead ends: 55955 [2020-12-22 06:08:59,283 INFO L226 Difference]: Without dead ends: 37002 [2020-12-22 06:08:59,318 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 06:08:59,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37002 states. [2020-12-22 06:09:00,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37002 to 18861. [2020-12-22 06:09:00,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18861 states. [2020-12-22 06:09:00,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18861 states to 18861 states and 35597 transitions. [2020-12-22 06:09:00,548 INFO L78 Accepts]: Start accepts. Automaton has 18861 states and 35597 transitions. Word has length 56 [2020-12-22 06:09:00,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:00,548 INFO L481 AbstractCegarLoop]: Abstraction has 18861 states and 35597 transitions. [2020-12-22 06:09:00,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:09:00,548 INFO L276 IsEmpty]: Start isEmpty. Operand 18861 states and 35597 transitions. [2020-12-22 06:09:00,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:09:00,550 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:00,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:00,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:09:00,550 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 06:09:00,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:00,551 INFO L82 PathProgramCache]: Analyzing trace with hash -563675223, now seen corresponding path program 1 times [2020-12-22 06:09:00,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:00,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250368094] [2020-12-22 06:09:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:00,623 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 06:09:00,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250368094] [2020-12-22 06:09:00,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:00,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:09:00,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951937201] [2020-12-22 06:09:00,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:09:00,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:00,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:09:00,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:09:00,629 INFO L87 Difference]: Start difference. First operand 18861 states and 35597 transitions. Second operand 5 states. [2020-12-22 06:09:04,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:04,819 INFO L93 Difference]: Finished difference Result 61065 states and 115191 transitions. [2020-12-22 06:09:04,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:09:04,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-12-22 06:09:04,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:04,906 INFO L225 Difference]: With dead ends: 61065 [2020-12-22 06:09:04,906 INFO L226 Difference]: Without dead ends: 42238 [2020-12-22 06:09:04,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 06:09:04,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42238 states. [2020-12-22 06:09:06,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42238 to 25950. [2020-12-22 06:09:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25950 states. [2020-12-22 06:09:06,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25950 states to 25950 states and 48558 transitions. [2020-12-22 06:09:06,214 INFO L78 Accepts]: Start accepts. Automaton has 25950 states and 48558 transitions. Word has length 56 [2020-12-22 06:09:06,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:06,214 INFO L481 AbstractCegarLoop]: Abstraction has 25950 states and 48558 transitions. [2020-12-22 06:09:06,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:09:06,214 INFO L276 IsEmpty]: Start isEmpty. Operand 25950 states and 48558 transitions. [2020-12-22 06:09:06,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 06:09:06,215 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:06,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:06,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:09:06,216 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 06:09:06,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:06,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1611681034, now seen corresponding path program 1 times [2020-12-22 06:09:06,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:06,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693947547] [2020-12-22 06:09:06,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:06,282 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 06:09:06,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693947547] [2020-12-22 06:09:06,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:06,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:09:06,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205418505] [2020-12-22 06:09:06,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:09:06,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:06,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:09:06,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:06,284 INFO L87 Difference]: Start difference. First operand 25950 states and 48558 transitions. Second operand 3 states. [2020-12-22 06:09:08,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:08,419 INFO L93 Difference]: Finished difference Result 76694 states and 143535 transitions. [2020-12-22 06:09:08,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:09:08,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-22 06:09:08,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:08,507 INFO L225 Difference]: With dead ends: 76694 [2020-12-22 06:09:08,507 INFO L226 Difference]: Without dead ends: 50781 [2020-12-22 06:09:08,535 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 06:09:08,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50781 states. [2020-12-22 06:09:09,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50781 to 25860. [2020-12-22 06:09:09,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25860 states. [2020-12-22 06:09:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25860 states to 25860 states and 48318 transitions. [2020-12-22 06:09:09,917 INFO L78 Accepts]: Start accepts. Automaton has 25860 states and 48318 transitions. Word has length 59 [2020-12-22 06:09:09,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:09,918 INFO L481 AbstractCegarLoop]: Abstraction has 25860 states and 48318 transitions. [2020-12-22 06:09:09,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:09:09,918 INFO L276 IsEmpty]: Start isEmpty. Operand 25860 states and 48318 transitions. [2020-12-22 06:09:09,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:09:09,919 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:09,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:09,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:09:09,920 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 06:09:09,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:09,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1140880549, now seen corresponding path program 1 times [2020-12-22 06:09:09,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:09,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324472640] [2020-12-22 06:09:09,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:09:09,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324472640] [2020-12-22 06:09:09,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:09,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:09:09,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708863202] [2020-12-22 06:09:09,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:09:09,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:09,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:09:09,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:09:09,995 INFO L87 Difference]: Start difference. First operand 25860 states and 48318 transitions. Second operand 5 states. [2020-12-22 06:09:16,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:16,471 INFO L93 Difference]: Finished difference Result 208086 states and 389749 transitions. [2020-12-22 06:09:16,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:09:16,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-12-22 06:09:16,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:17,169 INFO L225 Difference]: With dead ends: 208086 [2020-12-22 06:09:17,169 INFO L226 Difference]: Without dead ends: 182289 [2020-12-22 06:09:17,228 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 06:09:17,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182289 states. [2020-12-22 06:09:20,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182289 to 49726. [2020-12-22 06:09:20,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49726 states. [2020-12-22 06:09:20,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49726 states to 49726 states and 92909 transitions. [2020-12-22 06:09:20,408 INFO L78 Accepts]: Start accepts. Automaton has 49726 states and 92909 transitions. Word has length 60 [2020-12-22 06:09:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:20,409 INFO L481 AbstractCegarLoop]: Abstraction has 49726 states and 92909 transitions. [2020-12-22 06:09:20,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:09:20,409 INFO L276 IsEmpty]: Start isEmpty. Operand 49726 states and 92909 transitions. [2020-12-22 06:09:20,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 06:09:20,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:20,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:20,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:09:20,411 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 06:09:20,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:20,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1604005965, now seen corresponding path program 1 times [2020-12-22 06:09:20,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:20,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783366376] [2020-12-22 06:09:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:20,479 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 06:09:20,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783366376] [2020-12-22 06:09:20,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:20,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:09:20,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255562826] [2020-12-22 06:09:20,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:09:20,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:20,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:09:20,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:20,482 INFO L87 Difference]: Start difference. First operand 49726 states and 92909 transitions. Second operand 3 states. [2020-12-22 06:09:24,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:24,074 INFO L93 Difference]: Finished difference Result 147167 states and 275195 transitions. [2020-12-22 06:09:24,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:09:24,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 06:09:24,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:24,278 INFO L225 Difference]: With dead ends: 147167 [2020-12-22 06:09:24,278 INFO L226 Difference]: Without dead ends: 97484 [2020-12-22 06:09:24,474 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 06:09:24,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97484 states. [2020-12-22 06:09:26,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97484 to 49614. [2020-12-22 06:09:26,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49614 states. [2020-12-22 06:09:26,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49614 states to 49614 states and 92517 transitions. [2020-12-22 06:09:26,690 INFO L78 Accepts]: Start accepts. Automaton has 49614 states and 92517 transitions. Word has length 64 [2020-12-22 06:09:26,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:26,690 INFO L481 AbstractCegarLoop]: Abstraction has 49614 states and 92517 transitions. [2020-12-22 06:09:26,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:09:26,690 INFO L276 IsEmpty]: Start isEmpty. Operand 49614 states and 92517 transitions. [2020-12-22 06:09:26,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:09:26,692 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:26,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:26,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:09:26,692 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 06:09:26,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:26,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1614119506, now seen corresponding path program 1 times [2020-12-22 06:09:26,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:26,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774546199] [2020-12-22 06:09:26,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:26,770 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 06:09:26,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774546199] [2020-12-22 06:09:26,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:26,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:09:26,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641710997] [2020-12-22 06:09:26,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:09:26,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:26,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:09:26,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:09:26,773 INFO L87 Difference]: Start difference. First operand 49614 states and 92517 transitions. Second operand 5 states. [2020-12-22 06:09:39,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:39,455 INFO L93 Difference]: Finished difference Result 410755 states and 768672 transitions. [2020-12-22 06:09:39,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:09:39,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-12-22 06:09:39,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:40,335 INFO L225 Difference]: With dead ends: 410755 [2020-12-22 06:09:40,335 INFO L226 Difference]: Without dead ends: 361202 [2020-12-22 06:09:40,452 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 06:09:41,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361202 states. [2020-12-22 06:09:46,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361202 to 96666. [2020-12-22 06:09:46,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96666 states. [2020-12-22 06:09:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96666 states to 96666 states and 180151 transitions. [2020-12-22 06:09:46,469 INFO L78 Accepts]: Start accepts. Automaton has 96666 states and 180151 transitions. Word has length 66 [2020-12-22 06:09:46,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:46,469 INFO L481 AbstractCegarLoop]: Abstraction has 96666 states and 180151 transitions. [2020-12-22 06:09:46,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:09:46,469 INFO L276 IsEmpty]: Start isEmpty. Operand 96666 states and 180151 transitions. [2020-12-22 06:09:46,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:09:46,471 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:46,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:46,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:09:46,471 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 06:09:46,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:46,472 INFO L82 PathProgramCache]: Analyzing trace with hash -357351110, now seen corresponding path program 1 times [2020-12-22 06:09:46,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:46,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520591607] [2020-12-22 06:09:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:46,533 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 06:09:46,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520591607] [2020-12-22 06:09:46,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:46,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:09:46,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444109176] [2020-12-22 06:09:46,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:09:46,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:46,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:09:46,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:46,535 INFO L87 Difference]: Start difference. First operand 96666 states and 180151 transitions. Second operand 3 states. [2020-12-22 06:09:53,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:53,728 INFO L93 Difference]: Finished difference Result 286255 states and 534338 transitions. [2020-12-22 06:09:53,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:09:53,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 06:09:53,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:54,142 INFO L225 Difference]: With dead ends: 286255 [2020-12-22 06:09:54,142 INFO L226 Difference]: Without dead ends: 189639 [2020-12-22 06:09:54,235 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 06:09:54,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189639 states. [2020-12-22 06:09:58,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189639 to 96558. [2020-12-22 06:09:58,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96558 states. [2020-12-22 06:09:58,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96558 states to 96558 states and 179503 transitions. [2020-12-22 06:09:58,976 INFO L78 Accepts]: Start accepts. Automaton has 96558 states and 179503 transitions. Word has length 70 [2020-12-22 06:09:58,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:58,977 INFO L481 AbstractCegarLoop]: Abstraction has 96558 states and 179503 transitions. [2020-12-22 06:09:58,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:09:58,977 INFO L276 IsEmpty]: Start isEmpty. Operand 96558 states and 179503 transitions. [2020-12-22 06:09:58,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 06:09:58,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:58,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:58,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:09:58,979 INFO L429 AbstractCegarLoop]: === Iteration 16 === [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 06:09:58,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:58,980 INFO L82 PathProgramCache]: Analyzing trace with hash -588149944, now seen corresponding path program 1 times [2020-12-22 06:09:58,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:58,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852692201] [2020-12-22 06:09:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:59,114 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 06:09:59,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852692201] [2020-12-22 06:09:59,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:59,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:09:59,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476788228] [2020-12-22 06:09:59,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:09:59,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:59,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:09:59,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:09:59,119 INFO L87 Difference]: Start difference. First operand 96558 states and 179503 transitions. Second operand 5 states. [2020-12-22 06:10:23,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:23,388 INFO L93 Difference]: Finished difference Result 810897 states and 1515240 transitions. [2020-12-22 06:10:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:10:23,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-12-22 06:10:23,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:25,450 INFO L225 Difference]: With dead ends: 810897 [2020-12-22 06:10:25,450 INFO L226 Difference]: Without dead ends: 714399 [2020-12-22 06:10:25,719 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 06:10:26,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714399 states.