/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_spec2_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:06:06,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:06:06,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:06:06,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:06:06,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:06:06,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:06:06,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:06:06,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:06:06,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:06:06,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:06:06,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:06:06,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:06:06,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:06:06,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:06:06,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:06:06,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:06:06,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:06:06,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:06:06,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:06:06,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:06:06,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:06:06,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:06:06,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:06:06,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:06:06,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:06:06,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:06:06,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:06:06,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:06:06,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:06:06,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:06:06,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:06:06,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:06:06,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:06:06,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:06:06,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:06:06,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:06:06,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:06:06,675 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:06:06,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:06:06,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:06:06,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:06:06,678 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:06:06,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:06:06,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:06:06,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:06:06,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:06:06,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:06:06,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:06:06,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:06:06,679 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:06:06,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:06:06,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:06:06,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:06:06,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:06:06,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:06:06,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:06:06,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:06:06,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:06:06,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:06:06,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:06:06,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:06:06,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:06:06,682 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:06:07,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:06:07,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:06:07,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:06:07,103 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:06:07,104 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:06:07,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product23.cil.c [2020-12-22 06:06:07,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/741d11822/b357b581c6534dbd86628bd52af6ee83/FLAG51702a3ef [2020-12-22 06:06:08,030 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:06:08,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product23.cil.c [2020-12-22 06:06:08,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/741d11822/b357b581c6534dbd86628bd52af6ee83/FLAG51702a3ef [2020-12-22 06:06:08,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/741d11822/b357b581c6534dbd86628bd52af6ee83 [2020-12-22 06:06:08,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:06:08,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:06:08,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:06:08,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:06:08,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:06:08,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:06:08" (1/1) ... [2020-12-22 06:06:08,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@524c38ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:08, skipping insertion in model container [2020-12-22 06:06:08,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:06:08" (1/1) ... [2020-12-22 06:06:08,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:06:08,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:06:08,750 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_spec2_product23.cil.c[35671,35684] [2020-12-22 06:06:08,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:06:08,976 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:06:09,076 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_spec2_product23.cil.c[35671,35684] [2020-12-22 06:06:09,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:06:09,225 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:06:09,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:09 WrapperNode [2020-12-22 06:06:09,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:06:09,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:06:09,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:06:09,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:06:09,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:09" (1/1) ... [2020-12-22 06:06:09,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:09" (1/1) ... [2020-12-22 06:06:09,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:06:09,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:06:09,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:06:09,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:06:09,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:09" (1/1) ... [2020-12-22 06:06:09,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:09" (1/1) ... [2020-12-22 06:06:09,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:09" (1/1) ... [2020-12-22 06:06:09,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:09" (1/1) ... [2020-12-22 06:06:09,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:09" (1/1) ... [2020-12-22 06:06:09,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:09" (1/1) ... [2020-12-22 06:06:09,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:09" (1/1) ... [2020-12-22 06:06:10,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:06:10,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:06:10,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:06:10,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:06:10,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:09" (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 06:06:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:06:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:06:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:06:10,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:06:16,882 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:06:16,883 INFO L299 CfgBuilder]: Removed 845 assume(true) statements. [2020-12-22 06:06:16,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:06:16 BoogieIcfgContainer [2020-12-22 06:06:16,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:06:16,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:06:16,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:06:16,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:06:16,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:06:08" (1/3) ... [2020-12-22 06:06:16,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edb59ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:06:16, skipping insertion in model container [2020-12-22 06:06:16,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:09" (2/3) ... [2020-12-22 06:06:16,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edb59ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:06:16, skipping insertion in model container [2020-12-22 06:06:16,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:06:16" (3/3) ... [2020-12-22 06:06:16,908 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product23.cil.c [2020-12-22 06:06:16,914 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:06:16,922 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:06:16,942 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:06:17,007 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:06:17,007 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:06:17,007 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:06:17,007 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:06:17,008 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:06:17,008 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:06:17,008 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:06:17,008 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:06:17,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states. [2020-12-22 06:06:17,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 06:06:17,167 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:17,168 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] [2020-12-22 06:06:17,172 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:17,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:17,179 INFO L82 PathProgramCache]: Analyzing trace with hash 325419631, now seen corresponding path program 1 times [2020-12-22 06:06:17,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:17,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135583056] [2020-12-22 06:06:17,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:17,659 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 06:06:17,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135583056] [2020-12-22 06:06:17,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:17,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:17,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966392810] [2020-12-22 06:06:17,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:06:17,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:17,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:06:17,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:17,683 INFO L87 Difference]: Start difference. First operand 3568 states. Second operand 3 states. [2020-12-22 06:06:17,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:17,921 INFO L93 Difference]: Finished difference Result 7127 states and 13437 transitions. [2020-12-22 06:06:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:06:17,923 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 06:06:17,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:17,987 INFO L225 Difference]: With dead ends: 7127 [2020-12-22 06:06:17,988 INFO L226 Difference]: Without dead ends: 3564 [2020-12-22 06:06:18,001 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 06:06:18,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2020-12-22 06:06:18,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 3564. [2020-12-22 06:06:18,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3564 states. [2020-12-22 06:06:18,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 6709 transitions. [2020-12-22 06:06:18,206 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 6709 transitions. Word has length 44 [2020-12-22 06:06:18,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:18,206 INFO L481 AbstractCegarLoop]: Abstraction has 3564 states and 6709 transitions. [2020-12-22 06:06:18,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:06:18,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 6709 transitions. [2020-12-22 06:06:18,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:06:18,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:18,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:18,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:06:18,212 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:18,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:18,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1247447704, now seen corresponding path program 1 times [2020-12-22 06:06:18,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:18,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231474435] [2020-12-22 06:06:18,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:18,397 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 06:06:18,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231474435] [2020-12-22 06:06:18,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:18,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:06:18,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957346782] [2020-12-22 06:06:18,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:06:18,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:18,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:06:18,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:06:18,401 INFO L87 Difference]: Start difference. First operand 3564 states and 6709 transitions. Second operand 6 states. [2020-12-22 06:06:18,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:18,711 INFO L93 Difference]: Finished difference Result 7079 states and 13334 transitions. [2020-12-22 06:06:18,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:06:18,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-12-22 06:06:18,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:18,735 INFO L225 Difference]: With dead ends: 7079 [2020-12-22 06:06:18,736 INFO L226 Difference]: Without dead ends: 3558 [2020-12-22 06:06:18,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:06:18,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2020-12-22 06:06:18,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 3558. [2020-12-22 06:06:18,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2020-12-22 06:06:18,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6696 transitions. [2020-12-22 06:06:18,891 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6696 transitions. Word has length 51 [2020-12-22 06:06:18,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:18,891 INFO L481 AbstractCegarLoop]: Abstraction has 3558 states and 6696 transitions. [2020-12-22 06:06:18,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:06:18,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6696 transitions. [2020-12-22 06:06:18,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:06:18,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:18,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:18,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:06:18,901 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:18,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:18,903 INFO L82 PathProgramCache]: Analyzing trace with hash 935565370, now seen corresponding path program 1 times [2020-12-22 06:06:18,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:18,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608207869] [2020-12-22 06:06:18,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:19,040 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 06:06:19,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608207869] [2020-12-22 06:06:19,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:19,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:19,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479838667] [2020-12-22 06:06:19,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:19,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:19,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:19,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:19,045 INFO L87 Difference]: Start difference. First operand 3558 states and 6696 transitions. Second operand 4 states. [2020-12-22 06:06:19,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:19,391 INFO L93 Difference]: Finished difference Result 7073 states and 13321 transitions. [2020-12-22 06:06:19,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:19,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 06:06:19,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:19,415 INFO L225 Difference]: With dead ends: 7073 [2020-12-22 06:06:19,415 INFO L226 Difference]: Without dead ends: 3558 [2020-12-22 06:06:19,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:06:19,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2020-12-22 06:06:19,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 3558. [2020-12-22 06:06:19,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2020-12-22 06:06:19,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6692 transitions. [2020-12-22 06:06:19,577 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6692 transitions. Word has length 52 [2020-12-22 06:06:19,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:19,586 INFO L481 AbstractCegarLoop]: Abstraction has 3558 states and 6692 transitions. [2020-12-22 06:06:19,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:19,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6692 transitions. [2020-12-22 06:06:19,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:06:19,592 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:19,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:19,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:06:19,593 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:19,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:19,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1337953173, now seen corresponding path program 1 times [2020-12-22 06:06:19,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:19,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183918816] [2020-12-22 06:06:19,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:19,708 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 06:06:19,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183918816] [2020-12-22 06:06:19,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:19,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:19,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294044070] [2020-12-22 06:06:19,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:19,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:19,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:19,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:19,713 INFO L87 Difference]: Start difference. First operand 3558 states and 6692 transitions. Second operand 4 states. [2020-12-22 06:06:19,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:19,965 INFO L93 Difference]: Finished difference Result 7073 states and 13317 transitions. [2020-12-22 06:06:19,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:19,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 06:06:19,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:19,987 INFO L225 Difference]: With dead ends: 7073 [2020-12-22 06:06:19,987 INFO L226 Difference]: Without dead ends: 3558 [2020-12-22 06:06:19,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:06:20,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2020-12-22 06:06:20,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 3558. [2020-12-22 06:06:20,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2020-12-22 06:06:20,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6688 transitions. [2020-12-22 06:06:20,132 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6688 transitions. Word has length 53 [2020-12-22 06:06:20,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:20,134 INFO L481 AbstractCegarLoop]: Abstraction has 3558 states and 6688 transitions. [2020-12-22 06:06:20,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:20,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6688 transitions. [2020-12-22 06:06:20,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:06:20,138 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:20,138 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 06:06:20,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:06:20,141 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:20,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:20,141 INFO L82 PathProgramCache]: Analyzing trace with hash 2088639861, now seen corresponding path program 1 times [2020-12-22 06:06:20,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:20,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744312958] [2020-12-22 06:06:20,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:20,231 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 06:06:20,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744312958] [2020-12-22 06:06:20,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:20,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:20,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233491281] [2020-12-22 06:06:20,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:20,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:20,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:20,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:20,234 INFO L87 Difference]: Start difference. First operand 3558 states and 6688 transitions. Second operand 4 states. [2020-12-22 06:06:20,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:20,559 INFO L93 Difference]: Finished difference Result 7073 states and 13313 transitions. [2020-12-22 06:06:20,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:20,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 06:06:20,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:20,581 INFO L225 Difference]: With dead ends: 7073 [2020-12-22 06:06:20,581 INFO L226 Difference]: Without dead ends: 3558 [2020-12-22 06:06:20,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:06:20,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2020-12-22 06:06:20,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 3558. [2020-12-22 06:06:20,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2020-12-22 06:06:20,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6684 transitions. [2020-12-22 06:06:20,765 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6684 transitions. Word has length 54 [2020-12-22 06:06:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:20,766 INFO L481 AbstractCegarLoop]: Abstraction has 3558 states and 6684 transitions. [2020-12-22 06:06:20,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:20,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6684 transitions. [2020-12-22 06:06:20,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:06:20,771 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:20,771 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 06:06:20,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:06:20,772 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:20,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:20,773 INFO L82 PathProgramCache]: Analyzing trace with hash 623431925, now seen corresponding path program 1 times [2020-12-22 06:06:20,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:20,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841523295] [2020-12-22 06:06:20,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:20,889 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 06:06:20,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841523295] [2020-12-22 06:06:20,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:20,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:20,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295890013] [2020-12-22 06:06:20,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:20,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:20,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:20,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:20,893 INFO L87 Difference]: Start difference. First operand 3558 states and 6684 transitions. Second operand 4 states. [2020-12-22 06:06:21,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:21,109 INFO L93 Difference]: Finished difference Result 7073 states and 13309 transitions. [2020-12-22 06:06:21,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:21,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 06:06:21,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:21,153 INFO L225 Difference]: With dead ends: 7073 [2020-12-22 06:06:21,153 INFO L226 Difference]: Without dead ends: 3537 [2020-12-22 06:06:21,160 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 06:06:21,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2020-12-22 06:06:21,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3537. [2020-12-22 06:06:21,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3537 states. [2020-12-22 06:06:21,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 6650 transitions. [2020-12-22 06:06:21,340 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 6650 transitions. Word has length 54 [2020-12-22 06:06:21,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:21,341 INFO L481 AbstractCegarLoop]: Abstraction has 3537 states and 6650 transitions. [2020-12-22 06:06:21,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:21,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 6650 transitions. [2020-12-22 06:06:21,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:06:21,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:21,344 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 06:06:21,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:06:21,345 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:21,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:21,350 INFO L82 PathProgramCache]: Analyzing trace with hash 751690096, now seen corresponding path program 1 times [2020-12-22 06:06:21,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:21,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734185935] [2020-12-22 06:06:21,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:21,430 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 06:06:21,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734185935] [2020-12-22 06:06:21,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:21,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:21,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346721076] [2020-12-22 06:06:21,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:21,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:21,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:21,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:21,434 INFO L87 Difference]: Start difference. First operand 3537 states and 6650 transitions. Second operand 4 states. [2020-12-22 06:06:21,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:21,658 INFO L93 Difference]: Finished difference Result 7052 states and 13275 transitions. [2020-12-22 06:06:21,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:21,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-12-22 06:06:21,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:21,670 INFO L225 Difference]: With dead ends: 7052 [2020-12-22 06:06:21,670 INFO L226 Difference]: Without dead ends: 3537 [2020-12-22 06:06:21,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:06:21,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2020-12-22 06:06:21,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3537. [2020-12-22 06:06:21,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3537 states. [2020-12-22 06:06:21,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 6649 transitions. [2020-12-22 06:06:21,844 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 6649 transitions. Word has length 55 [2020-12-22 06:06:21,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:21,844 INFO L481 AbstractCegarLoop]: Abstraction has 3537 states and 6649 transitions. [2020-12-22 06:06:21,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:21,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 6649 transitions. [2020-12-22 06:06:21,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:06:21,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:21,847 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] [2020-12-22 06:06:21,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:06:21,848 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:21,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:21,848 INFO L82 PathProgramCache]: Analyzing trace with hash -877480272, now seen corresponding path program 1 times [2020-12-22 06:06:21,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:21,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133736687] [2020-12-22 06:06:21,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:21,914 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 06:06:21,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133736687] [2020-12-22 06:06:21,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:21,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:21,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438530868] [2020-12-22 06:06:21,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:21,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:21,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:21,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:21,918 INFO L87 Difference]: Start difference. First operand 3537 states and 6649 transitions. Second operand 4 states. [2020-12-22 06:06:22,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:22,125 INFO L93 Difference]: Finished difference Result 7052 states and 13274 transitions. [2020-12-22 06:06:22,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:22,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-12-22 06:06:22,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:22,134 INFO L225 Difference]: With dead ends: 7052 [2020-12-22 06:06:22,134 INFO L226 Difference]: Without dead ends: 3537 [2020-12-22 06:06:22,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:06:22,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2020-12-22 06:06:22,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3537. [2020-12-22 06:06:22,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3537 states. [2020-12-22 06:06:22,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 6648 transitions. [2020-12-22 06:06:22,267 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 6648 transitions. Word has length 56 [2020-12-22 06:06:22,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:22,268 INFO L481 AbstractCegarLoop]: Abstraction has 3537 states and 6648 transitions. [2020-12-22 06:06:22,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:22,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 6648 transitions. [2020-12-22 06:06:22,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 06:06:22,270 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:22,271 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] [2020-12-22 06:06:22,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:06:22,271 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:22,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:22,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1319412555, now seen corresponding path program 1 times [2020-12-22 06:06:22,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:22,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882070905] [2020-12-22 06:06:22,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:22,377 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 06:06:22,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882070905] [2020-12-22 06:06:22,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:22,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:06:22,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881845755] [2020-12-22 06:06:22,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:06:22,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:22,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:06:22,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:06:22,380 INFO L87 Difference]: Start difference. First operand 3537 states and 6648 transitions. Second operand 7 states. [2020-12-22 06:06:22,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:22,693 INFO L93 Difference]: Finished difference Result 7046 states and 13262 transitions. [2020-12-22 06:06:22,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:06:22,694 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-12-22 06:06:22,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:22,702 INFO L225 Difference]: With dead ends: 7046 [2020-12-22 06:06:22,703 INFO L226 Difference]: Without dead ends: 3537 [2020-12-22 06:06:22,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:06:22,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2020-12-22 06:06:22,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3537. [2020-12-22 06:06:22,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3537 states. [2020-12-22 06:06:22,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 6647 transitions. [2020-12-22 06:06:22,854 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 6647 transitions. Word has length 57 [2020-12-22 06:06:22,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:22,854 INFO L481 AbstractCegarLoop]: Abstraction has 3537 states and 6647 transitions. [2020-12-22 06:06:22,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:06:22,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 6647 transitions. [2020-12-22 06:06:22,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:06:22,860 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:22,860 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] [2020-12-22 06:06:22,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:06:22,860 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:22,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:22,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1860274459, now seen corresponding path program 1 times [2020-12-22 06:06:22,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:22,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462789534] [2020-12-22 06:06:22,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:22,965 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 06:06:22,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462789534] [2020-12-22 06:06:22,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:22,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:22,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268517828] [2020-12-22 06:06:22,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:22,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:22,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:22,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:22,967 INFO L87 Difference]: Start difference. First operand 3537 states and 6647 transitions. Second operand 4 states. [2020-12-22 06:06:25,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:25,045 INFO L93 Difference]: Finished difference Result 9389 states and 17726 transitions. [2020-12-22 06:06:25,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:25,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-12-22 06:06:25,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:25,059 INFO L225 Difference]: With dead ends: 9389 [2020-12-22 06:06:25,059 INFO L226 Difference]: Without dead ends: 5886 [2020-12-22 06:06:25,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:25,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2020-12-22 06:06:25,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 3537. [2020-12-22 06:06:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3537 states. [2020-12-22 06:06:25,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 6641 transitions. [2020-12-22 06:06:25,219 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 6641 transitions. Word has length 58 [2020-12-22 06:06:25,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:25,219 INFO L481 AbstractCegarLoop]: Abstraction has 3537 states and 6641 transitions. [2020-12-22 06:06:25,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:25,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 6641 transitions. [2020-12-22 06:06:25,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:06:25,222 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:25,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:25,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:06:25,223 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:25,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:25,223 INFO L82 PathProgramCache]: Analyzing trace with hash 517748111, now seen corresponding path program 1 times [2020-12-22 06:06:25,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:25,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591326013] [2020-12-22 06:06:25,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:25,297 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 06:06:25,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591326013] [2020-12-22 06:06:25,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:25,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:25,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595359579] [2020-12-22 06:06:25,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:25,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:25,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:25,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:25,299 INFO L87 Difference]: Start difference. First operand 3537 states and 6641 transitions. Second operand 4 states. [2020-12-22 06:06:27,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:27,484 INFO L93 Difference]: Finished difference Result 9389 states and 17715 transitions. [2020-12-22 06:06:27,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:27,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 06:06:27,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:27,499 INFO L225 Difference]: With dead ends: 9389 [2020-12-22 06:06:27,499 INFO L226 Difference]: Without dead ends: 5886 [2020-12-22 06:06:27,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:27,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2020-12-22 06:06:27,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 3537. [2020-12-22 06:06:27,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3537 states. [2020-12-22 06:06:27,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 6635 transitions. [2020-12-22 06:06:27,662 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 6635 transitions. Word has length 60 [2020-12-22 06:06:27,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:27,662 INFO L481 AbstractCegarLoop]: Abstraction has 3537 states and 6635 transitions. [2020-12-22 06:06:27,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:27,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 6635 transitions. [2020-12-22 06:06:27,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 06:06:27,666 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:27,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:27,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:06:27,666 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:27,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:27,667 INFO L82 PathProgramCache]: Analyzing trace with hash 617914193, now seen corresponding path program 1 times [2020-12-22 06:06:27,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:27,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388872685] [2020-12-22 06:06:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:27,752 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 06:06:27,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388872685] [2020-12-22 06:06:27,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:27,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:27,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799294900] [2020-12-22 06:06:27,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:27,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:27,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:27,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:27,755 INFO L87 Difference]: Start difference. First operand 3537 states and 6635 transitions. Second operand 4 states. [2020-12-22 06:06:30,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:30,081 INFO L93 Difference]: Finished difference Result 9389 states and 17704 transitions. [2020-12-22 06:06:30,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:30,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 06:06:30,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:30,102 INFO L225 Difference]: With dead ends: 9389 [2020-12-22 06:06:30,102 INFO L226 Difference]: Without dead ends: 5886 [2020-12-22 06:06:30,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:30,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2020-12-22 06:06:30,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 3537. [2020-12-22 06:06:30,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3537 states. [2020-12-22 06:06:30,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 6629 transitions. [2020-12-22 06:06:30,314 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 6629 transitions. Word has length 62 [2020-12-22 06:06:30,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:30,314 INFO L481 AbstractCegarLoop]: Abstraction has 3537 states and 6629 transitions. [2020-12-22 06:06:30,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:30,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 6629 transitions. [2020-12-22 06:06:30,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 06:06:30,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:30,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:30,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:06:30,318 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:30,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:30,318 INFO L82 PathProgramCache]: Analyzing trace with hash -394943249, now seen corresponding path program 1 times [2020-12-22 06:06:30,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:30,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787775090] [2020-12-22 06:06:30,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:30,400 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 06:06:30,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787775090] [2020-12-22 06:06:30,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:30,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:30,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839940643] [2020-12-22 06:06:30,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:30,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:30,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:30,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:30,403 INFO L87 Difference]: Start difference. First operand 3537 states and 6629 transitions. Second operand 4 states. [2020-12-22 06:06:32,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:32,646 INFO L93 Difference]: Finished difference Result 9389 states and 17693 transitions. [2020-12-22 06:06:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:32,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-22 06:06:32,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:32,663 INFO L225 Difference]: With dead ends: 9389 [2020-12-22 06:06:32,664 INFO L226 Difference]: Without dead ends: 5886 [2020-12-22 06:06:32,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:32,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2020-12-22 06:06:32,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 3537. [2020-12-22 06:06:32,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3537 states. [2020-12-22 06:06:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 6623 transitions. [2020-12-22 06:06:32,845 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 6623 transitions. Word has length 64 [2020-12-22 06:06:32,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:32,845 INFO L481 AbstractCegarLoop]: Abstraction has 3537 states and 6623 transitions. [2020-12-22 06:06:32,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:32,846 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 6623 transitions. [2020-12-22 06:06:32,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:06:32,848 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:32,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:32,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:06:32,849 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:32,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:32,850 INFO L82 PathProgramCache]: Analyzing trace with hash 686127111, now seen corresponding path program 1 times [2020-12-22 06:06:32,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:32,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333270404] [2020-12-22 06:06:32,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:32,934 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 06:06:32,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333270404] [2020-12-22 06:06:32,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:32,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:06:32,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612128627] [2020-12-22 06:06:32,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:06:32,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:32,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:06:32,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:06:32,936 INFO L87 Difference]: Start difference. First operand 3537 states and 6623 transitions. Second operand 6 states. [2020-12-22 06:06:37,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:37,507 INFO L93 Difference]: Finished difference Result 13425 states and 25051 transitions. [2020-12-22 06:06:37,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 06:06:37,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-12-22 06:06:37,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:37,527 INFO L225 Difference]: With dead ends: 13425 [2020-12-22 06:06:37,528 INFO L226 Difference]: Without dead ends: 10866 [2020-12-22 06:06:37,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 06:06:37,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10866 states. [2020-12-22 06:06:37,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10866 to 6564. [2020-12-22 06:06:37,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6564 states. [2020-12-22 06:06:37,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6564 states to 6564 states and 12148 transitions. [2020-12-22 06:06:37,907 INFO L78 Accepts]: Start accepts. Automaton has 6564 states and 12148 transitions. Word has length 66 [2020-12-22 06:06:37,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:37,908 INFO L481 AbstractCegarLoop]: Abstraction has 6564 states and 12148 transitions. [2020-12-22 06:06:37,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:06:37,908 INFO L276 IsEmpty]: Start isEmpty. Operand 6564 states and 12148 transitions. [2020-12-22 06:06:37,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:06:37,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:37,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:37,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:06:37,911 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:37,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:37,912 INFO L82 PathProgramCache]: Analyzing trace with hash 99321097, now seen corresponding path program 1 times [2020-12-22 06:06:37,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:37,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912293425] [2020-12-22 06:06:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:38,018 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 06:06:38,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912293425] [2020-12-22 06:06:38,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:38,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:38,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243767623] [2020-12-22 06:06:38,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:06:38,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:38,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:06:38,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:38,020 INFO L87 Difference]: Start difference. First operand 6564 states and 12148 transitions. Second operand 3 states. [2020-12-22 06:06:38,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:38,531 INFO L93 Difference]: Finished difference Result 14713 states and 27249 transitions. [2020-12-22 06:06:38,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:06:38,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 06:06:38,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:38,547 INFO L225 Difference]: With dead ends: 14713 [2020-12-22 06:06:38,547 INFO L226 Difference]: Without dead ends: 10100 [2020-12-22 06:06:38,556 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 06:06:38,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10100 states. [2020-12-22 06:06:39,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10100 to 10069. [2020-12-22 06:06:39,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10069 states. [2020-12-22 06:06:39,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10069 states to 10069 states and 18645 transitions. [2020-12-22 06:06:39,079 INFO L78 Accepts]: Start accepts. Automaton has 10069 states and 18645 transitions. Word has length 66 [2020-12-22 06:06:39,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:39,080 INFO L481 AbstractCegarLoop]: Abstraction has 10069 states and 18645 transitions. [2020-12-22 06:06:39,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:06:39,080 INFO L276 IsEmpty]: Start isEmpty. Operand 10069 states and 18645 transitions. [2020-12-22 06:06:39,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 06:06:39,083 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:39,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:39,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:06:39,083 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:39,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:39,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1159736287, now seen corresponding path program 1 times [2020-12-22 06:06:39,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:39,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428314716] [2020-12-22 06:06:39,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:39,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:06:39,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428314716] [2020-12-22 06:06:39,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:39,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:06:39,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497915927] [2020-12-22 06:06:39,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:06:39,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:39,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:06:39,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:06:39,164 INFO L87 Difference]: Start difference. First operand 10069 states and 18645 transitions. Second operand 6 states. [2020-12-22 06:06:42,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:42,794 INFO L93 Difference]: Finished difference Result 30323 states and 55985 transitions. [2020-12-22 06:06:42,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 06:06:42,794 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 06:06:42,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:42,820 INFO L225 Difference]: With dead ends: 30323 [2020-12-22 06:06:42,821 INFO L226 Difference]: Without dead ends: 22517 [2020-12-22 06:06:42,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 06:06:42,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22517 states. [2020-12-22 06:06:43,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22517 to 13672. [2020-12-22 06:06:43,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13672 states. [2020-12-22 06:06:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13672 states to 13672 states and 24899 transitions. [2020-12-22 06:06:43,741 INFO L78 Accepts]: Start accepts. Automaton has 13672 states and 24899 transitions. Word has length 67 [2020-12-22 06:06:43,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:43,741 INFO L481 AbstractCegarLoop]: Abstraction has 13672 states and 24899 transitions. [2020-12-22 06:06:43,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:06:43,741 INFO L276 IsEmpty]: Start isEmpty. Operand 13672 states and 24899 transitions. [2020-12-22 06:06:43,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:06:43,744 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:43,744 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 06:06:43,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:06:43,744 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:43,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:43,745 INFO L82 PathProgramCache]: Analyzing trace with hash -963376252, now seen corresponding path program 1 times [2020-12-22 06:06:43,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:43,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114865040] [2020-12-22 06:06:43,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:43,822 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 06:06:43,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114865040] [2020-12-22 06:06:43,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:43,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:06:43,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851136264] [2020-12-22 06:06:43,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:06:43,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:43,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:06:43,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:06:43,825 INFO L87 Difference]: Start difference. First operand 13672 states and 24899 transitions. Second operand 5 states. [2020-12-22 06:06:44,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:44,520 INFO L93 Difference]: Finished difference Result 24966 states and 45442 transitions. [2020-12-22 06:06:44,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:06:44,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-22 06:06:44,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:44,536 INFO L225 Difference]: With dead ends: 24966 [2020-12-22 06:06:44,536 INFO L226 Difference]: Without dead ends: 13661 [2020-12-22 06:06:44,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:06:44,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13661 states. [2020-12-22 06:06:45,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13661 to 13627. [2020-12-22 06:06:45,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13627 states. [2020-12-22 06:06:45,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13627 states to 13627 states and 24795 transitions. [2020-12-22 06:06:45,243 INFO L78 Accepts]: Start accepts. Automaton has 13627 states and 24795 transitions. Word has length 68 [2020-12-22 06:06:45,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:45,244 INFO L481 AbstractCegarLoop]: Abstraction has 13627 states and 24795 transitions. [2020-12-22 06:06:45,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:06:45,244 INFO L276 IsEmpty]: Start isEmpty. Operand 13627 states and 24795 transitions. [2020-12-22 06:06:45,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:06:45,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:45,247 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 06:06:45,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:06:45,247 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:45,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:45,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1974493502, now seen corresponding path program 1 times [2020-12-22 06:06:45,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:45,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128756678] [2020-12-22 06:06:45,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:45,318 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 06:06:45,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128756678] [2020-12-22 06:06:45,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:45,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:06:45,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834443195] [2020-12-22 06:06:45,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:06:45,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:45,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:06:45,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:06:45,327 INFO L87 Difference]: Start difference. First operand 13627 states and 24795 transitions. Second operand 6 states. [2020-12-22 06:06:49,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:49,287 INFO L93 Difference]: Finished difference Result 46200 states and 83805 transitions. [2020-12-22 06:06:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 06:06:49,287 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-12-22 06:06:49,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:49,327 INFO L225 Difference]: With dead ends: 46200 [2020-12-22 06:06:49,327 INFO L226 Difference]: Without dead ends: 33852 [2020-12-22 06:06:49,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:06:49,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33852 states. [2020-12-22 06:06:50,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33852 to 18713. [2020-12-22 06:06:50,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18713 states. [2020-12-22 06:06:50,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18713 states to 18713 states and 33996 transitions. [2020-12-22 06:06:50,219 INFO L78 Accepts]: Start accepts. Automaton has 18713 states and 33996 transitions. Word has length 68 [2020-12-22 06:06:50,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:50,220 INFO L481 AbstractCegarLoop]: Abstraction has 18713 states and 33996 transitions. [2020-12-22 06:06:50,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:06:50,220 INFO L276 IsEmpty]: Start isEmpty. Operand 18713 states and 33996 transitions. [2020-12-22 06:06:50,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:06:50,222 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:50,223 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 06:06:50,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:06:50,223 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:50,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:50,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1430475388, now seen corresponding path program 1 times [2020-12-22 06:06:50,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:50,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401291162] [2020-12-22 06:06:50,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:50,283 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 06:06:50,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401291162] [2020-12-22 06:06:50,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:50,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:50,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437501509] [2020-12-22 06:06:50,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:06:50,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:50,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:06:50,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:50,286 INFO L87 Difference]: Start difference. First operand 18713 states and 33996 transitions. Second operand 3 states. [2020-12-22 06:06:52,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:52,186 INFO L93 Difference]: Finished difference Result 53974 states and 98192 transitions. [2020-12-22 06:06:52,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:06:52,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 06:06:52,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:52,235 INFO L225 Difference]: With dead ends: 53974 [2020-12-22 06:06:52,235 INFO L226 Difference]: Without dead ends: 36629 [2020-12-22 06:06:52,250 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 06:06:52,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36629 states. [2020-12-22 06:06:53,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36629 to 36629. [2020-12-22 06:06:53,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36629 states. [2020-12-22 06:06:53,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36629 states to 36629 states and 66642 transitions. [2020-12-22 06:06:53,969 INFO L78 Accepts]: Start accepts. Automaton has 36629 states and 66642 transitions. Word has length 68 [2020-12-22 06:06:53,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:53,970 INFO L481 AbstractCegarLoop]: Abstraction has 36629 states and 66642 transitions. [2020-12-22 06:06:53,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:06:53,970 INFO L276 IsEmpty]: Start isEmpty. Operand 36629 states and 66642 transitions. [2020-12-22 06:06:53,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:06:53,973 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:53,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:53,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:06:53,973 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:53,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:53,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1395041026, now seen corresponding path program 1 times [2020-12-22 06:06:53,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:53,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371255602] [2020-12-22 06:06:53,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:54,038 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 06:06:54,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371255602] [2020-12-22 06:06:54,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:54,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:54,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150441193] [2020-12-22 06:06:54,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:06:54,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:54,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:06:54,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:54,040 INFO L87 Difference]: Start difference. First operand 36629 states and 66642 transitions. Second operand 3 states. [2020-12-22 06:06:56,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:56,834 INFO L93 Difference]: Finished difference Result 104998 states and 191018 transitions. [2020-12-22 06:06:56,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:06:56,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 06:06:56,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:56,955 INFO L225 Difference]: With dead ends: 104998 [2020-12-22 06:06:56,955 INFO L226 Difference]: Without dead ends: 72333 [2020-12-22 06:06:56,991 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 06:06:57,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72333 states. [2020-12-22 06:07:00,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72333 to 72331. [2020-12-22 06:07:00,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72331 states. [2020-12-22 06:07:00,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72331 states to 72331 states and 131683 transitions. [2020-12-22 06:07:00,233 INFO L78 Accepts]: Start accepts. Automaton has 72331 states and 131683 transitions. Word has length 69 [2020-12-22 06:07:00,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:00,233 INFO L481 AbstractCegarLoop]: Abstraction has 72331 states and 131683 transitions. [2020-12-22 06:07:00,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:07:00,233 INFO L276 IsEmpty]: Start isEmpty. Operand 72331 states and 131683 transitions. [2020-12-22 06:07:00,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:07:00,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:00,236 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 06:07:00,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:07:00,236 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:07:00,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:00,236 INFO L82 PathProgramCache]: Analyzing trace with hash -296575795, now seen corresponding path program 1 times [2020-12-22 06:07:00,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:00,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264872492] [2020-12-22 06:07:00,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:00,352 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 06:07:00,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264872492] [2020-12-22 06:07:00,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:00,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:07:00,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795584451] [2020-12-22 06:07:00,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:07:00,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:00,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:07:00,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:07:00,355 INFO L87 Difference]: Start difference. First operand 72331 states and 131683 transitions. Second operand 3 states. [2020-12-22 06:07:06,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:06,874 INFO L93 Difference]: Finished difference Result 212724 states and 387260 transitions. [2020-12-22 06:07:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:07:06,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 06:07:06,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:07,300 INFO L225 Difference]: With dead ends: 212724 [2020-12-22 06:07:07,301 INFO L226 Difference]: Without dead ends: 143432 [2020-12-22 06:07:07,362 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 06:07:07,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143432 states. [2020-12-22 06:07:13,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143432 to 143428. [2020-12-22 06:07:13,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143428 states. [2020-12-22 06:07:14,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143428 states to 143428 states and 261169 transitions. [2020-12-22 06:07:14,044 INFO L78 Accepts]: Start accepts. Automaton has 143428 states and 261169 transitions. Word has length 70 [2020-12-22 06:07:14,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:14,044 INFO L481 AbstractCegarLoop]: Abstraction has 143428 states and 261169 transitions. [2020-12-22 06:07:14,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:07:14,045 INFO L276 IsEmpty]: Start isEmpty. Operand 143428 states and 261169 transitions. [2020-12-22 06:07:14,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:07:14,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:14,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:14,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:07:14,048 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:07:14,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:14,049 INFO L82 PathProgramCache]: Analyzing trace with hash -603891993, now seen corresponding path program 1 times [2020-12-22 06:07:14,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:14,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768175037] [2020-12-22 06:07:14,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:14,133 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 06:07:14,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768175037] [2020-12-22 06:07:14,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:14,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:07:14,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453027705] [2020-12-22 06:07:14,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:07:14,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:14,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:07:14,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:07:14,139 INFO L87 Difference]: Start difference. First operand 143428 states and 261169 transitions. Second operand 3 states. [2020-12-22 06:07:25,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:25,331 INFO L93 Difference]: Finished difference Result 423462 states and 770892 transitions. [2020-12-22 06:07:25,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:07:25,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 06:07:25,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:26,105 INFO L225 Difference]: With dead ends: 423462 [2020-12-22 06:07:26,106 INFO L226 Difference]: Without dead ends: 285071 [2020-12-22 06:07:26,264 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 06:07:26,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285071 states. [2020-12-22 06:07:38,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285071 to 285065. [2020-12-22 06:07:38,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285065 states. [2020-12-22 06:07:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285065 states to 285065 states and 519063 transitions. [2020-12-22 06:07:39,454 INFO L78 Accepts]: Start accepts. Automaton has 285065 states and 519063 transitions. Word has length 71 [2020-12-22 06:07:39,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:39,455 INFO L481 AbstractCegarLoop]: Abstraction has 285065 states and 519063 transitions. [2020-12-22 06:07:39,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:07:39,456 INFO L276 IsEmpty]: Start isEmpty. Operand 285065 states and 519063 transitions. [2020-12-22 06:07:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:07:39,460 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:39,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:39,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:07:39,475 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:07:39,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:39,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1540759530, now seen corresponding path program 1 times [2020-12-22 06:07:39,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:39,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353252951] [2020-12-22 06:07:39,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:39,583 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 06:07:39,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353252951] [2020-12-22 06:07:39,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:39,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:07:39,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812142384] [2020-12-22 06:07:39,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:07:39,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:39,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:07:39,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:07:39,587 INFO L87 Difference]: Start difference. First operand 285065 states and 519063 transitions. Second operand 3 states. [2020-12-22 06:08:01,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:01,230 INFO L93 Difference]: Finished difference Result 843692 states and 1535743 transitions. [2020-12-22 06:08:01,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:08:01,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 06:08:01,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:02,712 INFO L225 Difference]: With dead ends: 843692 [2020-12-22 06:08:02,712 INFO L226 Difference]: Without dead ends: 567221 [2020-12-22 06:08:02,996 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 06:08:03,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567221 states.