/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_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:08:25,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:08:25,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:08:25,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:08:25,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:08:25,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:08:25,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:08:25,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:08:25,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:08:25,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:08:25,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:08:25,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:08:25,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:08:25,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:08:25,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:08:25,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:08:25,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:08:25,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:08:25,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:08:25,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:08:25,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:08:25,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:08:25,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:08:25,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:08:25,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 06:08:25,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 06:08:25,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 06:08:25,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 06:08:25,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 06:08:25,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 06:08:25,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:08:25,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:08:25,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:08:25,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:08:25,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:08:25,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:08:25,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:08:25,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:08:25,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:08:25,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:08:25,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:08:25,444 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:08:25,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:08:25,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:08:25,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:08:25,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:08:25,501 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:08:25,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:08:25,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:08:25,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:08:25,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:08:25,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:08:25,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:08:25,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:08:25,504 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:08:25,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:08:25,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:08:25,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:08:25,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:08:25,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:08:25,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:08:25,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:08:25,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:08:25,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:08:25,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:08:25,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:08:25,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:08:25,507 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:08:25,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:08:26,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:08:26,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:08:26,035 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:08:26,036 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:08:26,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2020-12-22 06:08:26,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a6529d4f/c0a0b20bf13a4cbe9876c165840dba0d/FLAG5c47503e8 [2020-12-22 06:08:27,018 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:08:27,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2020-12-22 06:08:27,074 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a6529d4f/c0a0b20bf13a4cbe9876c165840dba0d/FLAG5c47503e8 [2020-12-22 06:08:27,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a6529d4f/c0a0b20bf13a4cbe9876c165840dba0d [2020-12-22 06:08:27,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:08:27,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:08:27,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:08:27,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:08:27,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:08:27,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:08:27" (1/1) ... [2020-12-22 06:08:27,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9af1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:27, skipping insertion in model container [2020-12-22 06:08:27,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:08:27" (1/1) ... [2020-12-22 06:08:27,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:08:27,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:08:27,813 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_product09.cil.c[21386,21399] [2020-12-22 06:08:28,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:08:28,201 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:08:28,243 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_product09.cil.c[21386,21399] [2020-12-22 06:08:28,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:08:28,411 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:08:28,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:28 WrapperNode [2020-12-22 06:08:28,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:08:28,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:08:28,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:08:28,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:08:28,422 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 06:08:28,457 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 06:08:28,813 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:08:28,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:08:28,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:08:28,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:08:28,825 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 06:08:28,826 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 06:08:28,874 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 06:08:28,874 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 06:08:29,214 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 06:08:29,389 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 06:08:29,425 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 06:08:29,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:08:29,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:08:29,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:08:29,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:08:29,494 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 06:08:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:08:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:08:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:08:29,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:08:40,533 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:08:40,534 INFO L299 CfgBuilder]: Removed 1227 assume(true) statements. [2020-12-22 06:08:40,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:08:40 BoogieIcfgContainer [2020-12-22 06:08:40,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:08:40,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:08:40,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:08:40,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:08:40,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:08:27" (1/3) ... [2020-12-22 06:08:40,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7f2734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:08:40, skipping insertion in model container [2020-12-22 06:08:40,548 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 06:08:40,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7f2734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:08:40, skipping insertion in model container [2020-12-22 06:08:40,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:08:40" (3/3) ... [2020-12-22 06:08:40,550 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product09.cil.c [2020-12-22 06:08:40,557 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:08:40,564 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 06:08:40,584 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 06:08:40,629 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:08:40,629 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:08:40,629 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:08:40,629 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:08:40,629 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:08:40,630 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:08:40,630 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:08:40,630 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:08:40,718 INFO L276 IsEmpty]: Start isEmpty. Operand 5863 states. [2020-12-22 06:08:40,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 06:08:40,735 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:40,736 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] [2020-12-22 06:08:40,737 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 06:08:40,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:40,743 INFO L82 PathProgramCache]: Analyzing trace with hash 658093255, now seen corresponding path program 1 times [2020-12-22 06:08:40,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:40,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628818905] [2020-12-22 06:08:40,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:41,227 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 06:08:41,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628818905] [2020-12-22 06:08:41,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:41,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:08:41,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472153676] [2020-12-22 06:08:41,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:08:41,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:41,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:08:41,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:41,252 INFO L87 Difference]: Start difference. First operand 5863 states. Second operand 4 states. [2020-12-22 06:08:42,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:42,258 INFO L93 Difference]: Finished difference Result 23277 states and 44149 transitions. [2020-12-22 06:08:42,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:08:42,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-12-22 06:08:42,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:42,396 INFO L225 Difference]: With dead ends: 23277 [2020-12-22 06:08:42,396 INFO L226 Difference]: Without dead ends: 17427 [2020-12-22 06:08:42,417 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 06:08:42,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17427 states. [2020-12-22 06:08:42,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17427 to 5871. [2020-12-22 06:08:42,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5871 states. [2020-12-22 06:08:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5871 states to 5871 states and 11113 transitions. [2020-12-22 06:08:42,772 INFO L78 Accepts]: Start accepts. Automaton has 5871 states and 11113 transitions. Word has length 41 [2020-12-22 06:08:42,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:42,774 INFO L481 AbstractCegarLoop]: Abstraction has 5871 states and 11113 transitions. [2020-12-22 06:08:42,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:08:42,775 INFO L276 IsEmpty]: Start isEmpty. Operand 5871 states and 11113 transitions. [2020-12-22 06:08:42,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 06:08:42,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:42,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:08:42,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:08:42,785 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 06:08:42,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:42,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1852719386, now seen corresponding path program 1 times [2020-12-22 06:08:42,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:42,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499629115] [2020-12-22 06:08:42,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:42,963 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 06:08:42,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499629115] [2020-12-22 06:08:42,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:42,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:08:42,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926650250] [2020-12-22 06:08:42,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:08:42,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:42,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:08:42,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:08:42,967 INFO L87 Difference]: Start difference. First operand 5871 states and 11113 transitions. Second operand 3 states. [2020-12-22 06:08:43,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:43,312 INFO L93 Difference]: Finished difference Result 11658 states and 22073 transitions. [2020-12-22 06:08:43,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:08:43,313 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-22 06:08:43,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:43,369 INFO L225 Difference]: With dead ends: 11658 [2020-12-22 06:08:43,369 INFO L226 Difference]: Without dead ends: 5801 [2020-12-22 06:08:43,380 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 06:08:43,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2020-12-22 06:08:43,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 5801. [2020-12-22 06:08:43,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5801 states. [2020-12-22 06:08:43,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 10973 transitions. [2020-12-22 06:08:43,582 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 10973 transitions. Word has length 42 [2020-12-22 06:08:43,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:43,583 INFO L481 AbstractCegarLoop]: Abstraction has 5801 states and 10973 transitions. [2020-12-22 06:08:43,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:08:43,584 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 10973 transitions. [2020-12-22 06:08:43,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 06:08:43,589 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:43,589 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] [2020-12-22 06:08:43,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:08:43,590 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 06:08:43,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:43,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1250272945, now seen corresponding path program 1 times [2020-12-22 06:08:43,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:43,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166962649] [2020-12-22 06:08:43,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:43,775 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 06:08:43,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166962649] [2020-12-22 06:08:43,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:43,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:08:43,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073753168] [2020-12-22 06:08:43,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:08:43,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:43,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:08:43,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:43,779 INFO L87 Difference]: Start difference. First operand 5801 states and 10973 transitions. Second operand 4 states. [2020-12-22 06:08:44,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:44,150 INFO L93 Difference]: Finished difference Result 11576 states and 21909 transitions. [2020-12-22 06:08:44,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:08:44,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-12-22 06:08:44,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:44,169 INFO L225 Difference]: With dead ends: 11576 [2020-12-22 06:08:44,169 INFO L226 Difference]: Without dead ends: 5801 [2020-12-22 06:08:44,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:08:44,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2020-12-22 06:08:44,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 5801. [2020-12-22 06:08:44,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5801 states. [2020-12-22 06:08:44,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 10971 transitions. [2020-12-22 06:08:44,417 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 10971 transitions. Word has length 45 [2020-12-22 06:08:44,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:44,425 INFO L481 AbstractCegarLoop]: Abstraction has 5801 states and 10971 transitions. [2020-12-22 06:08:44,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:08:44,426 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 10971 transitions. [2020-12-22 06:08:44,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 06:08:44,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:44,429 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] [2020-12-22 06:08:44,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:08:44,430 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 06:08:44,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:44,431 INFO L82 PathProgramCache]: Analyzing trace with hash -54591564, now seen corresponding path program 1 times [2020-12-22 06:08:44,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:44,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452081218] [2020-12-22 06:08:44,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:44,554 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 06:08:44,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452081218] [2020-12-22 06:08:44,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:44,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:08:44,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737727881] [2020-12-22 06:08:44,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:08:44,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:44,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:08:44,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:44,559 INFO L87 Difference]: Start difference. First operand 5801 states and 10971 transitions. Second operand 4 states. [2020-12-22 06:08:44,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:44,893 INFO L93 Difference]: Finished difference Result 11576 states and 21906 transitions. [2020-12-22 06:08:44,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:08:44,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-12-22 06:08:44,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:44,912 INFO L225 Difference]: With dead ends: 11576 [2020-12-22 06:08:44,912 INFO L226 Difference]: Without dead ends: 5801 [2020-12-22 06:08:44,923 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 06:08:44,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2020-12-22 06:08:45,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 5801. [2020-12-22 06:08:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5801 states. [2020-12-22 06:08:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 10969 transitions. [2020-12-22 06:08:45,166 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 10969 transitions. Word has length 46 [2020-12-22 06:08:45,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:45,166 INFO L481 AbstractCegarLoop]: Abstraction has 5801 states and 10969 transitions. [2020-12-22 06:08:45,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:08:45,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 10969 transitions. [2020-12-22 06:08:45,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 06:08:45,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:45,168 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 06:08:45,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:08:45,169 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 06:08:45,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:45,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1822334068, now seen corresponding path program 1 times [2020-12-22 06:08:45,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:45,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134534439] [2020-12-22 06:08:45,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:45,295 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 06:08:45,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134534439] [2020-12-22 06:08:45,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:45,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:08:45,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312287099] [2020-12-22 06:08:45,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:08:45,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:45,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:08:45,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:45,299 INFO L87 Difference]: Start difference. First operand 5801 states and 10969 transitions. Second operand 4 states. [2020-12-22 06:08:45,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:45,657 INFO L93 Difference]: Finished difference Result 11576 states and 21903 transitions. [2020-12-22 06:08:45,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:08:45,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-12-22 06:08:45,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:45,678 INFO L225 Difference]: With dead ends: 11576 [2020-12-22 06:08:45,678 INFO L226 Difference]: Without dead ends: 5801 [2020-12-22 06:08:45,689 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 06:08:45,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2020-12-22 06:08:45,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 5801. [2020-12-22 06:08:45,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5801 states. [2020-12-22 06:08:46,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 10967 transitions. [2020-12-22 06:08:46,122 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 10967 transitions. Word has length 47 [2020-12-22 06:08:46,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:46,124 INFO L481 AbstractCegarLoop]: Abstraction has 5801 states and 10967 transitions. [2020-12-22 06:08:46,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:08:46,125 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 10967 transitions. [2020-12-22 06:08:46,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 06:08:46,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:46,128 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 06:08:46,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:08:46,129 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 06:08:46,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:46,129 INFO L82 PathProgramCache]: Analyzing trace with hash -951972295, now seen corresponding path program 1 times [2020-12-22 06:08:46,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:46,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133825249] [2020-12-22 06:08:46,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:46,238 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 06:08:46,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133825249] [2020-12-22 06:08:46,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:46,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:08:46,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612819078] [2020-12-22 06:08:46,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:08:46,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:46,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:08:46,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:46,242 INFO L87 Difference]: Start difference. First operand 5801 states and 10967 transitions. Second operand 4 states. [2020-12-22 06:08:46,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:46,625 INFO L93 Difference]: Finished difference Result 11576 states and 21900 transitions. [2020-12-22 06:08:46,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:08:46,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-12-22 06:08:46,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:46,640 INFO L225 Difference]: With dead ends: 11576 [2020-12-22 06:08:46,640 INFO L226 Difference]: Without dead ends: 5801 [2020-12-22 06:08:46,649 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 06:08:46,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2020-12-22 06:08:46,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 5801. [2020-12-22 06:08:46,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5801 states. [2020-12-22 06:08:46,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 10965 transitions. [2020-12-22 06:08:46,850 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 10965 transitions. Word has length 48 [2020-12-22 06:08:46,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:46,851 INFO L481 AbstractCegarLoop]: Abstraction has 5801 states and 10965 transitions. [2020-12-22 06:08:46,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:08:46,851 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 10965 transitions. [2020-12-22 06:08:46,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:08:46,853 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:46,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:08:46,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:08:46,853 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 06:08:46,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:46,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1885582439, now seen corresponding path program 1 times [2020-12-22 06:08:46,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:46,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832665813] [2020-12-22 06:08:46,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:46,947 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 06:08:46,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832665813] [2020-12-22 06:08:46,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:46,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:08:46,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87757472] [2020-12-22 06:08:46,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:08:46,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:46,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:08:46,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:08:46,951 INFO L87 Difference]: Start difference. First operand 5801 states and 10965 transitions. Second operand 5 states. [2020-12-22 06:08:48,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:48,217 INFO L93 Difference]: Finished difference Result 16381 states and 30837 transitions. [2020-12-22 06:08:48,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:08:48,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-12-22 06:08:48,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:48,248 INFO L225 Difference]: With dead ends: 16381 [2020-12-22 06:08:48,248 INFO L226 Difference]: Without dead ends: 10650 [2020-12-22 06:08:48,261 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 06:08:48,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10650 states. [2020-12-22 06:08:48,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10650 to 10185. [2020-12-22 06:08:48,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10185 states. [2020-12-22 06:08:48,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10185 states to 10185 states and 19267 transitions. [2020-12-22 06:08:48,670 INFO L78 Accepts]: Start accepts. Automaton has 10185 states and 19267 transitions. Word has length 49 [2020-12-22 06:08:48,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:48,670 INFO L481 AbstractCegarLoop]: Abstraction has 10185 states and 19267 transitions. [2020-12-22 06:08:48,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:08:48,670 INFO L276 IsEmpty]: Start isEmpty. Operand 10185 states and 19267 transitions. [2020-12-22 06:08:48,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:08:48,672 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:48,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:08:48,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:08:48,672 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 06:08:48,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:48,673 INFO L82 PathProgramCache]: Analyzing trace with hash -2067597666, now seen corresponding path program 1 times [2020-12-22 06:08:48,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:48,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598594812] [2020-12-22 06:08:48,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:48,745 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 06:08:48,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598594812] [2020-12-22 06:08:48,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:48,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:08:48,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147910394] [2020-12-22 06:08:48,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:08:48,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:48,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:08:48,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:08:48,747 INFO L87 Difference]: Start difference. First operand 10185 states and 19267 transitions. Second operand 5 states. [2020-12-22 06:08:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:53,202 INFO L93 Difference]: Finished difference Result 84466 states and 159956 transitions. [2020-12-22 06:08:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:08:53,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-12-22 06:08:53,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:53,687 INFO L225 Difference]: With dead ends: 84466 [2020-12-22 06:08:53,687 INFO L226 Difference]: Without dead ends: 74351 [2020-12-22 06:08:53,752 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 06:08:53,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74351 states. [2020-12-22 06:08:55,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74351 to 19113. [2020-12-22 06:08:55,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19113 states. [2020-12-22 06:08:55,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19113 states to 19113 states and 36149 transitions. [2020-12-22 06:08:55,294 INFO L78 Accepts]: Start accepts. Automaton has 19113 states and 36149 transitions. Word has length 49 [2020-12-22 06:08:55,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:55,294 INFO L481 AbstractCegarLoop]: Abstraction has 19113 states and 36149 transitions. [2020-12-22 06:08:55,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:08:55,295 INFO L276 IsEmpty]: Start isEmpty. Operand 19113 states and 36149 transitions. [2020-12-22 06:08:55,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:08:55,296 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:55,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:08:55,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:08:55,297 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 06:08:55,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:55,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1725686366, now seen corresponding path program 1 times [2020-12-22 06:08:55,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:55,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580947146] [2020-12-22 06:08:55,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:55,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:08:55,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580947146] [2020-12-22 06:08:55,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:55,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:08:55,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746214472] [2020-12-22 06:08:55,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:08:55,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:55,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:08:55,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:08:55,491 INFO L87 Difference]: Start difference. First operand 19113 states and 36149 transitions. Second operand 3 states. [2020-12-22 06:08:57,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:57,132 INFO L93 Difference]: Finished difference Result 56419 states and 106731 transitions. [2020-12-22 06:08:57,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:08:57,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-12-22 06:08:57,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:57,209 INFO L225 Difference]: With dead ends: 56419 [2020-12-22 06:08:57,209 INFO L226 Difference]: Without dead ends: 37338 [2020-12-22 06:08:57,235 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 06:08:57,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37338 states. [2020-12-22 06:08:58,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37338 to 18989. [2020-12-22 06:08:58,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18989 states. [2020-12-22 06:08:58,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18989 states to 18989 states and 35901 transitions. [2020-12-22 06:08:58,104 INFO L78 Accepts]: Start accepts. Automaton has 18989 states and 35901 transitions. Word has length 50 [2020-12-22 06:08:58,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:58,104 INFO L481 AbstractCegarLoop]: Abstraction has 18989 states and 35901 transitions. [2020-12-22 06:08:58,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:08:58,104 INFO L276 IsEmpty]: Start isEmpty. Operand 18989 states and 35901 transitions. [2020-12-22 06:08:58,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:08:58,106 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:58,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:08:58,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:08:58,107 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 06:08:58,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:58,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1748422117, now seen corresponding path program 1 times [2020-12-22 06:08:58,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:58,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392597691] [2020-12-22 06:08:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:58,188 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 06:08:58,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392597691] [2020-12-22 06:08:58,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:58,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:08:58,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587442211] [2020-12-22 06:08:58,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:08:58,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:58,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:08:58,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:08:58,190 INFO L87 Difference]: Start difference. First operand 18989 states and 35901 transitions. Second operand 5 states. [2020-12-22 06:09:01,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:01,122 INFO L93 Difference]: Finished difference Result 45444 states and 85766 transitions. [2020-12-22 06:09:01,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:09:01,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-12-22 06:09:01,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:01,160 INFO L225 Difference]: With dead ends: 45444 [2020-12-22 06:09:01,161 INFO L226 Difference]: Without dead ends: 26489 [2020-12-22 06:09:01,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:09:01,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26489 states. [2020-12-22 06:09:02,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26489 to 26071. [2020-12-22 06:09:02,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26071 states. [2020-12-22 06:09:02,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26071 states to 26071 states and 48869 transitions. [2020-12-22 06:09:02,123 INFO L78 Accepts]: Start accepts. Automaton has 26071 states and 48869 transitions. Word has length 50 [2020-12-22 06:09:02,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:02,123 INFO L481 AbstractCegarLoop]: Abstraction has 26071 states and 48869 transitions. [2020-12-22 06:09:02,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:09:02,124 INFO L276 IsEmpty]: Start isEmpty. Operand 26071 states and 48869 transitions. [2020-12-22 06:09:02,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:09:02,125 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:02,125 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 06:09:02,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:09:02,126 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 06:09:02,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:02,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1148017788, now seen corresponding path program 1 times [2020-12-22 06:09:02,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:02,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923737247] [2020-12-22 06:09:02,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:02,195 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 06:09:02,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923737247] [2020-12-22 06:09:02,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:02,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:09:02,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667391818] [2020-12-22 06:09:02,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:09:02,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:02,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:09:02,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:02,197 INFO L87 Difference]: Start difference. First operand 26071 states and 48869 transitions. Second operand 3 states. [2020-12-22 06:09:04,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:04,142 INFO L93 Difference]: Finished difference Result 77217 states and 144788 transitions. [2020-12-22 06:09:04,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:09:04,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 06:09:04,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:04,221 INFO L225 Difference]: With dead ends: 77217 [2020-12-22 06:09:04,221 INFO L226 Difference]: Without dead ends: 51183 [2020-12-22 06:09:04,251 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 06:09:04,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51183 states. [2020-12-22 06:09:05,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51183 to 25981. [2020-12-22 06:09:05,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25981 states. [2020-12-22 06:09:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25981 states to 25981 states and 48629 transitions. [2020-12-22 06:09:05,159 INFO L78 Accepts]: Start accepts. Automaton has 25981 states and 48629 transitions. Word has length 54 [2020-12-22 06:09:05,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:05,159 INFO L481 AbstractCegarLoop]: Abstraction has 25981 states and 48629 transitions. [2020-12-22 06:09:05,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:09:05,160 INFO L276 IsEmpty]: Start isEmpty. Operand 25981 states and 48629 transitions. [2020-12-22 06:09:05,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:09:05,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:05,161 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 06:09:05,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:09:05,161 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 06:09:05,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:05,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1847353343, now seen corresponding path program 1 times [2020-12-22 06:09:05,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:05,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385045739] [2020-12-22 06:09:05,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:05,231 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 06:09:05,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385045739] [2020-12-22 06:09:05,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:05,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:09:05,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592504579] [2020-12-22 06:09:05,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:09:05,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:05,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:09:05,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:09:05,234 INFO L87 Difference]: Start difference. First operand 25981 states and 48629 transitions. Second operand 5 states. [2020-12-22 06:09:11,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:11,735 INFO L93 Difference]: Finished difference Result 215734 states and 405120 transitions. [2020-12-22 06:09:11,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:09:11,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 06:09:11,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:12,251 INFO L225 Difference]: With dead ends: 215734 [2020-12-22 06:09:12,252 INFO L226 Difference]: Without dead ends: 189809 [2020-12-22 06:09:12,306 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 06:09:12,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189809 states. [2020-12-22 06:09:14,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189809 to 49951. [2020-12-22 06:09:14,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49951 states. [2020-12-22 06:09:14,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49951 states to 49951 states and 93488 transitions. [2020-12-22 06:09:14,902 INFO L78 Accepts]: Start accepts. Automaton has 49951 states and 93488 transitions. Word has length 55 [2020-12-22 06:09:14,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:14,902 INFO L481 AbstractCegarLoop]: Abstraction has 49951 states and 93488 transitions. [2020-12-22 06:09:14,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:09:14,902 INFO L276 IsEmpty]: Start isEmpty. Operand 49951 states and 93488 transitions. [2020-12-22 06:09:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 06:09:14,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:14,904 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 06:09:14,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:09:14,904 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 06:09:14,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:14,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1097057447, now seen corresponding path program 1 times [2020-12-22 06:09:14,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:14,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980705853] [2020-12-22 06:09:14,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:14,961 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 06:09:14,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980705853] [2020-12-22 06:09:14,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:14,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:09:14,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559124700] [2020-12-22 06:09:14,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:09:14,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:14,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:09:14,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:14,963 INFO L87 Difference]: Start difference. First operand 49951 states and 93488 transitions. Second operand 3 states. [2020-12-22 06:09:18,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:18,001 INFO L93 Difference]: Finished difference Result 148142 states and 277532 transitions. [2020-12-22 06:09:18,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:09:18,001 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-22 06:09:18,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:18,161 INFO L225 Difference]: With dead ends: 148142 [2020-12-22 06:09:18,162 INFO L226 Difference]: Without dead ends: 98234 [2020-12-22 06:09:18,202 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 06:09:18,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98234 states. [2020-12-22 06:09:20,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98234 to 49839. [2020-12-22 06:09:20,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49839 states. [2020-12-22 06:09:20,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49839 states to 49839 states and 93096 transitions. [2020-12-22 06:09:20,428 INFO L78 Accepts]: Start accepts. Automaton has 49839 states and 93096 transitions. Word has length 59 [2020-12-22 06:09:20,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:20,428 INFO L481 AbstractCegarLoop]: Abstraction has 49839 states and 93096 transitions. [2020-12-22 06:09:20,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:09:20,428 INFO L276 IsEmpty]: Start isEmpty. Operand 49839 states and 93096 transitions. [2020-12-22 06:09:20,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:09:20,430 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:20,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:20,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:09:20,430 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 06:09:20,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:20,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1428027956, now seen corresponding path program 1 times [2020-12-22 06:09:20,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:20,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503483899] [2020-12-22 06:09:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:20,506 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 06:09:20,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503483899] [2020-12-22 06:09:20,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:20,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:09:20,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041039176] [2020-12-22 06:09:20,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:09:20,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:20,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:09:20,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:09:20,509 INFO L87 Difference]: Start difference. First operand 49839 states and 93096 transitions. Second operand 5 states. [2020-12-22 06:09:31,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:31,971 INFO L93 Difference]: Finished difference Result 420315 states and 788343 transitions. [2020-12-22 06:09:31,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:09:31,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-12-22 06:09:31,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:32,768 INFO L225 Difference]: With dead ends: 420315 [2020-12-22 06:09:32,768 INFO L226 Difference]: Without dead ends: 370530 [2020-12-22 06:09:33,166 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 06:09:33,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370530 states. [2020-12-22 06:09:38,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370530 to 97099. [2020-12-22 06:09:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97099 states. [2020-12-22 06:09:38,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97099 states to 97099 states and 181266 transitions. [2020-12-22 06:09:38,607 INFO L78 Accepts]: Start accepts. Automaton has 97099 states and 181266 transitions. Word has length 61 [2020-12-22 06:09:38,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:38,607 INFO L481 AbstractCegarLoop]: Abstraction has 97099 states and 181266 transitions. [2020-12-22 06:09:38,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:09:38,607 INFO L276 IsEmpty]: Start isEmpty. Operand 97099 states and 181266 transitions. [2020-12-22 06:09:38,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:09:38,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:38,609 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] [2020-12-22 06:09:38,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:09:38,609 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 06:09:38,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:38,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1620145588, now seen corresponding path program 1 times [2020-12-22 06:09:38,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:38,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635476651] [2020-12-22 06:09:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:38,671 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 06:09:38,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635476651] [2020-12-22 06:09:38,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:38,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:09:38,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719584954] [2020-12-22 06:09:38,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:09:38,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:38,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:09:38,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:38,673 INFO L87 Difference]: Start difference. First operand 97099 states and 181266 transitions. Second operand 3 states. [2020-12-22 06:09:45,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:45,417 INFO L93 Difference]: Finished difference Result 288094 states and 538806 transitions. [2020-12-22 06:09:45,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:09:45,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 06:09:45,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:45,957 INFO L225 Difference]: With dead ends: 288094 [2020-12-22 06:09:45,957 INFO L226 Difference]: Without dead ends: 191045 [2020-12-22 06:09:46,040 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 06:09:46,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191045 states. [2020-12-22 06:09:50,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191045 to 96991. [2020-12-22 06:09:50,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96991 states. [2020-12-22 06:09:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96991 states to 96991 states and 180618 transitions. [2020-12-22 06:09:50,232 INFO L78 Accepts]: Start accepts. Automaton has 96991 states and 180618 transitions. Word has length 65 [2020-12-22 06:09:50,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:50,232 INFO L481 AbstractCegarLoop]: Abstraction has 96991 states and 180618 transitions. [2020-12-22 06:09:50,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:09:50,232 INFO L276 IsEmpty]: Start isEmpty. Operand 96991 states and 180618 transitions. [2020-12-22 06:09:50,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:09:50,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:50,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:50,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:09:50,234 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 06:09:50,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:50,235 INFO L82 PathProgramCache]: Analyzing trace with hash -676221058, now seen corresponding path program 1 times [2020-12-22 06:09:50,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:50,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897322003] [2020-12-22 06:09:50,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:50,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:09:50,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897322003] [2020-12-22 06:09:50,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:50,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:09:50,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969857417] [2020-12-22 06:09:50,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:09:50,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:50,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:09:50,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:09:50,310 INFO L87 Difference]: Start difference. First operand 96991 states and 180618 transitions. Second operand 5 states. [2020-12-22 06:10:12,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:12,856 INFO L93 Difference]: Finished difference Result 823761 states and 1542666 transitions. [2020-12-22 06:10:12,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:10:12,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-22 06:10:12,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:15,065 INFO L225 Difference]: With dead ends: 823761 [2020-12-22 06:10:15,066 INFO L226 Difference]: Without dead ends: 726823 [2020-12-22 06:10:15,311 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 06:10:15,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726823 states. [2020-12-22 06:10:27,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726823 to 190231. [2020-12-22 06:10:27,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190231 states. [2020-12-22 06:10:28,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190231 states to 190231 states and 353908 transitions. [2020-12-22 06:10:28,843 INFO L78 Accepts]: Start accepts. Automaton has 190231 states and 353908 transitions. Word has length 68 [2020-12-22 06:10:28,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:28,844 INFO L481 AbstractCegarLoop]: Abstraction has 190231 states and 353908 transitions. [2020-12-22 06:10:28,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:10:28,844 INFO L276 IsEmpty]: Start isEmpty. Operand 190231 states and 353908 transitions. [2020-12-22 06:10:28,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:10:28,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:28,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:10:28,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:10:28,847 INFO L429 AbstractCegarLoop]: === Iteration 17 === [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 06:10:28,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:28,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1583768619, now seen corresponding path program 1 times [2020-12-22 06:10:28,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:28,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450208955] [2020-12-22 06:10:28,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:29,077 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 06:10:29,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450208955] [2020-12-22 06:10:29,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:29,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:10:29,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806653560] [2020-12-22 06:10:29,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:10:29,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:29,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:10:29,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:10:29,086 INFO L87 Difference]: Start difference. First operand 190231 states and 353908 transitions. Second operand 7 states. [2020-12-22 06:10:52,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:52,522 INFO L93 Difference]: Finished difference Result 555507 states and 1029136 transitions. [2020-12-22 06:10:52,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:10:52,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-12-22 06:10:52,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:53,437 INFO L225 Difference]: With dead ends: 555507 [2020-12-22 06:10:53,438 INFO L226 Difference]: Without dead ends: 365335 [2020-12-22 06:10:53,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 06:10:53,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365335 states. [2020-12-22 06:11:04,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365335 to 267141. [2020-12-22 06:11:04,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267141 states. [2020-12-22 06:11:05,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267141 states to 267141 states and 494908 transitions. [2020-12-22 06:11:05,850 INFO L78 Accepts]: Start accepts. Automaton has 267141 states and 494908 transitions. Word has length 69 [2020-12-22 06:11:05,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:05,850 INFO L481 AbstractCegarLoop]: Abstraction has 267141 states and 494908 transitions. [2020-12-22 06:11:05,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:11:05,850 INFO L276 IsEmpty]: Start isEmpty. Operand 267141 states and 494908 transitions. [2020-12-22 06:11:05,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:11:05,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:05,851 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 06:11:05,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:11:05,852 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:05,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:05,852 INFO L82 PathProgramCache]: Analyzing trace with hash -654101735, now seen corresponding path program 1 times [2020-12-22 06:11:05,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:05,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984028266] [2020-12-22 06:11:05,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:05,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:11:05,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984028266] [2020-12-22 06:11:05,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:05,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:11:05,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041028871] [2020-12-22 06:11:05,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:11:05,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:05,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:11:05,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:11:05,957 INFO L87 Difference]: Start difference. First operand 267141 states and 494908 transitions. Second operand 7 states. [2020-12-22 06:11:30,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:30,364 INFO L93 Difference]: Finished difference Result 646248 states and 1192364 transitions. [2020-12-22 06:11:30,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:11:30,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-12-22 06:11:30,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:31,457 INFO L225 Difference]: With dead ends: 646248 [2020-12-22 06:11:31,457 INFO L226 Difference]: Without dead ends: 379166 [2020-12-22 06:11:31,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 06:11:32,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379166 states.