/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:35:12,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:35:12,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:35:12,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 20:35:12,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:35:12,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:35:12,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:35:12,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:35:12,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:35:12,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:35:12,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:35:12,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:35:12,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:35:12,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:35:12,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:35:12,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:35:12,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:35:12,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:35:12,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:35:12,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:35:12,770 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:35:12,797 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:35:12,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:35:12,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:35:12,804 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:35:12,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:35:12,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:35:12,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:35:12,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:35:12,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:35:12,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:35:12,807 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:35:12,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:35:12,807 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:35:12,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:35:12,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:35:12,808 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:35:12,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:35:12,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:35:12,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:35:12,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:35:12,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:35:12,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:35:12,810 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:35:13,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:35:13,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:35:13,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:35:13,282 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:35:13,283 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:35:13,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test25-2.c [2020-10-23 20:35:13,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8195dfc1/9def337cc1c641948b7c65db4235b0ab/FLAGae671b2c9 [2020-10-23 20:35:14,020 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:35:14,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test25-2.c [2020-10-23 20:35:14,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8195dfc1/9def337cc1c641948b7c65db4235b0ab/FLAGae671b2c9 [2020-10-23 20:35:14,380 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8195dfc1/9def337cc1c641948b7c65db4235b0ab [2020-10-23 20:35:14,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:35:14,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:35:14,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:35:14,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:35:14,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:35:14,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:35:14" (1/1) ... [2020-10-23 20:35:14,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e9e0f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:14, skipping insertion in model container [2020-10-23 20:35:14,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:35:14" (1/1) ... [2020-10-23 20:35:14,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:35:14,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:35:14,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:35:14,663 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:35:14,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:35:14,713 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:35:14,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:14 WrapperNode [2020-10-23 20:35:14,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:35:14,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:35:14,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:35:14,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:35:14,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:14" (1/1) ... [2020-10-23 20:35:14,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:14" (1/1) ... [2020-10-23 20:35:14,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:14" (1/1) ... [2020-10-23 20:35:14,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:14" (1/1) ... [2020-10-23 20:35:14,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:14" (1/1) ... [2020-10-23 20:35:14,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:14" (1/1) ... [2020-10-23 20:35:14,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:14" (1/1) ... [2020-10-23 20:35:14,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:35:14,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:35:14,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:35:14,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:35:14,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:14" (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 [2020-10-23 20:35:14,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:35:14,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:35:14,894 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:35:14,895 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-23 20:35:14,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:35:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:35:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:35:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:35:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:35:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:35:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-23 20:35:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:35:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:35:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:35:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:35:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:35:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:35:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:35:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:35:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:35:15,653 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:35:15,653 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-23 20:35:15,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:35:15 BoogieIcfgContainer [2020-10-23 20:35:15,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:35:15,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:35:15,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:35:15,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:35:15,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:35:14" (1/3) ... [2020-10-23 20:35:15,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f107bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:35:15, skipping insertion in model container [2020-10-23 20:35:15,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:14" (2/3) ... [2020-10-23 20:35:15,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f107bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:35:15, skipping insertion in model container [2020-10-23 20:35:15,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:35:15" (3/3) ... [2020-10-23 20:35:15,673 INFO L111 eAbstractionObserver]: Analyzing ICFG test25-2.c [2020-10-23 20:35:15,688 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:35:15,700 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:35:15,720 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:35:15,748 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:35:15,748 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:35:15,748 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:35:15,748 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:35:15,749 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:35:15,749 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:35:15,749 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:35:15,749 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:35:15,768 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2020-10-23 20:35:15,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-23 20:35:15,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:15,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:35:15,782 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:15,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1065751138, now seen corresponding path program 1 times [2020-10-23 20:35:15,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:15,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657704805] [2020-10-23 20:35:15,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:15,887 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:16,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:35:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:16,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-23 20:35:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:16,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:35:16,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657704805] [2020-10-23 20:35:16,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:16,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:35:16,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121216341] [2020-10-23 20:35:16,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:35:16,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:16,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:35:16,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:35:16,258 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 4 states. [2020-10-23 20:35:16,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:35:16,667 INFO L93 Difference]: Finished difference Result 143 states and 156 transitions. [2020-10-23 20:35:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:35:16,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-23 20:35:16,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:35:16,679 INFO L225 Difference]: With dead ends: 143 [2020-10-23 20:35:16,680 INFO L226 Difference]: Without dead ends: 75 [2020-10-23 20:35:16,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:35:16,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-23 20:35:16,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2020-10-23 20:35:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-23 20:35:16,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2020-10-23 20:35:16,742 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 50 [2020-10-23 20:35:16,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:35:16,743 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2020-10-23 20:35:16,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:35:16,743 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2020-10-23 20:35:16,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-23 20:35:16,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:16,746 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] [2020-10-23 20:35:16,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:35:16,747 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:16,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:16,748 INFO L82 PathProgramCache]: Analyzing trace with hash 8480307, now seen corresponding path program 1 times [2020-10-23 20:35:16,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:16,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861774223] [2020-10-23 20:35:16,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:16,914 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:35:17,043 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:17,118 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:17,127 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:17,192 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:17,196 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:17,197 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:17,284 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:35:17,286 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:17,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:35:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:17,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-23 20:35:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:35:17,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861774223] [2020-10-23 20:35:17,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:17,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:35:17,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875846819] [2020-10-23 20:35:17,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:35:17,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:17,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:35:17,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:35:17,601 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 6 states. [2020-10-23 20:35:18,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:35:18,019 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2020-10-23 20:35:18,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:35:18,020 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-23 20:35:18,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:35:18,022 INFO L225 Difference]: With dead ends: 121 [2020-10-23 20:35:18,023 INFO L226 Difference]: Without dead ends: 85 [2020-10-23 20:35:18,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:35:18,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-23 20:35:18,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2020-10-23 20:35:18,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-23 20:35:18,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2020-10-23 20:35:18,043 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 62 [2020-10-23 20:35:18,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:35:18,044 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2020-10-23 20:35:18,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:35:18,045 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2020-10-23 20:35:18,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-23 20:35:18,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:18,048 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:35:18,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:35:18,048 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:18,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:18,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1768479399, now seen corresponding path program 2 times [2020-10-23 20:35:18,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:18,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830422831] [2020-10-23 20:35:18,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:18,178 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:35:18,196 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:18,266 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:18,274 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:18,331 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:18,333 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:18,334 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:18,547 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:35:18,563 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:18,634 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:18,641 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:18,703 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:18,705 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:18,705 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:18,878 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:35:18,892 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:18,952 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:18,959 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:19,020 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:19,022 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:19,022 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:19,189 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:35:19,211 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:19,278 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:19,286 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:19,348 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:19,352 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:19,353 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:19,517 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:35:19,534 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:19,606 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:19,614 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:19,671 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:19,673 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:19,674 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:35:19,848 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:35:19,861 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:19,929 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:19,936 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:19,991 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:19,993 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:19,993 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:20,158 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:20,215 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:20,222 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:20,271 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:20,272 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:20,273 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:20,434 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:20,509 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:20,517 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:20,573 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:20,575 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:20,575 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:35:20,754 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:35:20,771 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:20,829 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:20,835 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:20,892 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:20,893 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:20,894 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:21,057 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:35:21,074 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:21,132 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:21,138 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:21,190 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:21,192 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:21,192 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:21,241 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:35:21,243 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:21,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:35:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:21,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-23 20:35:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:21,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:35:21,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830422831] [2020-10-23 20:35:21,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:21,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:35:21,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822373374] [2020-10-23 20:35:21,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:35:21,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:21,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:35:21,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:35:21,471 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 8 states. [2020-10-23 20:35:21,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:35:21,931 INFO L93 Difference]: Finished difference Result 131 states and 133 transitions. [2020-10-23 20:35:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 20:35:21,932 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-23 20:35:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:35:21,934 INFO L225 Difference]: With dead ends: 131 [2020-10-23 20:35:21,934 INFO L226 Difference]: Without dead ends: 95 [2020-10-23 20:35:21,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-23 20:35:21,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-23 20:35:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2020-10-23 20:35:21,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-23 20:35:21,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2020-10-23 20:35:21,950 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 72 [2020-10-23 20:35:21,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:35:21,951 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2020-10-23 20:35:21,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:35:21,951 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2020-10-23 20:35:21,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-23 20:35:21,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:21,953 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:35:21,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:35:21,953 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:21,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:21,954 INFO L82 PathProgramCache]: Analyzing trace with hash 297577727, now seen corresponding path program 3 times [2020-10-23 20:35:21,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:21,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521044843] [2020-10-23 20:35:21,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:22,066 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:35:22,082 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:22,141 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:22,147 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:22,197 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:22,199 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:22,199 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:22,367 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:22,426 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:22,433 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:22,494 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:22,495 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:22,495 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:22,654 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:35:22,671 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:22,734 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:22,740 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:22,799 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:22,800 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:22,801 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:22,959 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:35:22,982 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:23,042 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:23,049 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:23,098 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:23,100 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:23,100 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:23,259 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:23,325 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:23,331 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:23,391 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:23,393 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:23,393 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:35:23,550 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:23,608 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:23,614 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:23,665 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:23,667 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:23,667 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:23,836 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:23,906 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:23,912 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:23,964 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:23,966 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:23,966 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:24,125 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:24,190 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:24,196 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:24,257 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:24,258 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:24,259 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:35:24,412 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:24,467 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:24,480 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:24,530 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:24,532 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:24,533 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:24,681 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:24,739 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:24,745 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:24,794 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:24,796 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:24,797 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:24,853 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:35:24,855 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:25,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:35:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:25,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-23 20:35:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:25,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:35:25,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521044843] [2020-10-23 20:35:25,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:25,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:35:25,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294086224] [2020-10-23 20:35:25,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:35:25,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:25,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:35:25,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:35:25,104 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 10 states. [2020-10-23 20:35:25,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:35:25,627 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2020-10-23 20:35:25,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 20:35:25,630 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-10-23 20:35:25,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:35:25,632 INFO L225 Difference]: With dead ends: 141 [2020-10-23 20:35:25,632 INFO L226 Difference]: Without dead ends: 105 [2020-10-23 20:35:25,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:35:25,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-23 20:35:25,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 97. [2020-10-23 20:35:25,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-23 20:35:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2020-10-23 20:35:25,648 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 82 [2020-10-23 20:35:25,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:35:25,649 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2020-10-23 20:35:25,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:35:25,649 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2020-10-23 20:35:25,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-23 20:35:25,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:25,651 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:35:25,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:35:25,651 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:25,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:25,652 INFO L82 PathProgramCache]: Analyzing trace with hash -919511771, now seen corresponding path program 4 times [2020-10-23 20:35:25,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:25,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940528548] [2020-10-23 20:35:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:25,759 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:35:25,770 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:25,827 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:25,832 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:25,885 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:25,887 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:25,888 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:26,047 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:26,106 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:26,112 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:26,164 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:26,166 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:26,166 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:26,328 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:35:26,338 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:26,396 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:26,403 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:26,453 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:26,454 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:26,455 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:26,612 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:26,676 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:26,681 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:26,733 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:26,735 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:26,735 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:26,893 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:35:26,904 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:26,975 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:26,985 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:27,041 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:27,042 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:27,043 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:35:27,200 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:27,258 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:27,267 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:27,322 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:27,324 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:27,325 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:27,485 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:27,543 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:27,551 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:27,600 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:27,604 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:27,604 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:27,756 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:27,821 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:27,834 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:27,891 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:27,892 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:27,893 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:35:28,047 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:28,111 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:28,118 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:28,167 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:28,168 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:28,168 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:28,326 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:28,388 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:28,393 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:28,454 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:28,456 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:28,456 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:28,508 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:35:28,510 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:28,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:35:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:28,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-23 20:35:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:35:28,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940528548] [2020-10-23 20:35:28,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:28,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 20:35:28,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576363216] [2020-10-23 20:35:28,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 20:35:28,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:28,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 20:35:28,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-23 20:35:28,879 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 12 states. [2020-10-23 20:35:29,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:35:29,479 INFO L93 Difference]: Finished difference Result 151 states and 153 transitions. [2020-10-23 20:35:29,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:35:29,480 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2020-10-23 20:35:29,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:35:29,482 INFO L225 Difference]: With dead ends: 151 [2020-10-23 20:35:29,482 INFO L226 Difference]: Without dead ends: 115 [2020-10-23 20:35:29,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-10-23 20:35:29,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-23 20:35:29,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 107. [2020-10-23 20:35:29,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-23 20:35:29,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2020-10-23 20:35:29,512 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 92 [2020-10-23 20:35:29,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:35:29,512 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2020-10-23 20:35:29,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 20:35:29,513 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2020-10-23 20:35:29,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-23 20:35:29,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:29,519 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:35:29,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:35:29,521 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:29,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:29,522 INFO L82 PathProgramCache]: Analyzing trace with hash 343709131, now seen corresponding path program 5 times [2020-10-23 20:35:29,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:29,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276995760] [2020-10-23 20:35:29,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:29,635 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:35:29,646 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:29,708 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:29,714 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:29,764 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:29,766 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:29,766 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:29,927 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:35:29,938 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:30,001 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:30,011 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:30,060 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:30,062 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:30,062 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:30,213 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:30,271 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:30,276 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:30,328 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:30,329 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:30,330 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:30,480 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:30,544 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:30,549 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:30,601 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:30,602 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:30,602 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:30,756 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:30,825 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:30,834 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:30,892 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:30,893 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:30,893 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:35:31,052 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:31,111 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:31,117 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:31,171 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:31,173 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:31,173 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:31,333 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:31,400 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:31,405 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:31,455 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:31,456 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:31,457 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:31,600 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:31,662 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:31,667 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:31,723 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:31,725 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:31,725 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:35:31,874 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:31,929 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:31,935 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:31,987 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:31,988 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:31,989 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:32,132 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:32,191 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:32,196 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:32,244 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:32,245 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:32,246 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:32,293 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:35:32,295 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:32,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:35:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:32,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-23 20:35:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:35:32,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276995760] [2020-10-23 20:35:32,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:32,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:35:32,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539510266] [2020-10-23 20:35:32,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:35:32,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:32,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:35:32,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:35:32,757 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 14 states. [2020-10-23 20:35:33,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:35:33,360 INFO L93 Difference]: Finished difference Result 161 states and 163 transitions. [2020-10-23 20:35:33,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:35:33,361 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 102 [2020-10-23 20:35:33,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:35:33,363 INFO L225 Difference]: With dead ends: 161 [2020-10-23 20:35:33,364 INFO L226 Difference]: Without dead ends: 125 [2020-10-23 20:35:33,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-10-23 20:35:33,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-23 20:35:33,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2020-10-23 20:35:33,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-23 20:35:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2020-10-23 20:35:33,379 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 102 [2020-10-23 20:35:33,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:35:33,379 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2020-10-23 20:35:33,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:35:33,380 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2020-10-23 20:35:33,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-23 20:35:33,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:33,382 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:35:33,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:35:33,382 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:33,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:33,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1855080719, now seen corresponding path program 6 times [2020-10-23 20:35:33,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:33,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711532324] [2020-10-23 20:35:33,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:33,497 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:33,557 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:33,562 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:33,613 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:33,614 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:33,615 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:33,761 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:33,818 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:33,823 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:33,876 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:33,878 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:33,878 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:34,029 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:34,086 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:34,093 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:34,152 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:34,153 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:34,153 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:34,302 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:34,366 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:34,372 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:34,424 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:34,425 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:34,426 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:34,577 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:34,644 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:34,652 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:34,720 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:34,721 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:34,722 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:35:34,889 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:34,950 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:34,956 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:35,010 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:35,012 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:35,012 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:35,176 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:35,243 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:35,248 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:35,296 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:35,298 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:35,298 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:35,454 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:35,521 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:35,527 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:35,582 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:35,583 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:35,583 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:35:35,781 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:35:35,792 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:35,846 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:35,852 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:35,900 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:35,901 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:35,901 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:36,044 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:36,104 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:36,110 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:36,164 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:36,165 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:36,165 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:36,216 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:35:36,218 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:36,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:35:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:36,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-23 20:35:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:35:36,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711532324] [2020-10-23 20:35:36,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:36,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-23 20:35:36,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284117902] [2020-10-23 20:35:36,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 20:35:36,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:36,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 20:35:36,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:35:36,659 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 16 states. [2020-10-23 20:35:37,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:35:37,403 INFO L93 Difference]: Finished difference Result 171 states and 173 transitions. [2020-10-23 20:35:37,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 20:35:37,404 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 112 [2020-10-23 20:35:37,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:35:37,406 INFO L225 Difference]: With dead ends: 171 [2020-10-23 20:35:37,406 INFO L226 Difference]: Without dead ends: 135 [2020-10-23 20:35:37,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2020-10-23 20:35:37,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-23 20:35:37,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 127. [2020-10-23 20:35:37,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-23 20:35:37,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2020-10-23 20:35:37,420 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 112 [2020-10-23 20:35:37,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:35:37,421 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2020-10-23 20:35:37,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 20:35:37,421 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2020-10-23 20:35:37,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-23 20:35:37,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:37,423 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:35:37,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:35:37,423 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:37,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:37,424 INFO L82 PathProgramCache]: Analyzing trace with hash -367255401, now seen corresponding path program 7 times [2020-10-23 20:35:37,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:37,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509171975] [2020-10-23 20:35:37,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:37,528 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:37,588 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:37,593 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:37,644 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:37,645 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:37,645 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:37,789 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:37,847 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:37,852 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:37,909 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:37,910 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:37,911 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:38,051 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:38,116 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:38,121 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:38,175 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:38,176 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:38,176 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:38,344 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:38,414 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:38,434 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:38,489 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:38,490 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:38,491 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:38,648 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:35:38,658 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:38,727 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:38,733 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:38,789 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:38,790 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:38,791 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:35:38,936 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:38,992 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:38,999 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:39,050 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:39,052 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:39,052 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:39,205 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:39,270 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:39,276 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:39,335 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:39,336 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:39,337 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:39,489 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:39,557 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:39,562 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:39,624 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:39,625 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:39,625 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:35:39,786 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:39,841 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:39,848 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:39,898 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:39,899 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:39,899 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:40,056 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:40,108 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:40,113 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:40,175 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:40,175 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:40,176 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:40,230 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:35:40,233 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:40,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:35:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:40,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-23 20:35:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:40,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:35:40,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509171975] [2020-10-23 20:35:40,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:40,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-23 20:35:40,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203460637] [2020-10-23 20:35:40,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-23 20:35:40,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:40,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-23 20:35:40,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-23 20:35:40,767 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 18 states. [2020-10-23 20:35:41,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:35:41,736 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions. [2020-10-23 20:35:41,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-23 20:35:41,737 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 122 [2020-10-23 20:35:41,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:35:41,741 INFO L225 Difference]: With dead ends: 181 [2020-10-23 20:35:41,741 INFO L226 Difference]: Without dead ends: 145 [2020-10-23 20:35:41,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=320, Invalid=672, Unknown=0, NotChecked=0, Total=992 [2020-10-23 20:35:41,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-23 20:35:41,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 137. [2020-10-23 20:35:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-23 20:35:41,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2020-10-23 20:35:41,773 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 122 [2020-10-23 20:35:41,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:35:41,774 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2020-10-23 20:35:41,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-23 20:35:41,777 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2020-10-23 20:35:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-23 20:35:41,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:41,782 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:35:41,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:35:41,782 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:41,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:41,786 INFO L82 PathProgramCache]: Analyzing trace with hash 451359421, now seen corresponding path program 8 times [2020-10-23 20:35:41,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:41,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723406174] [2020-10-23 20:35:41,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:41,907 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:41,969 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:41,974 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:42,024 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:42,025 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:42,025 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:42,166 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:42,225 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:42,231 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:42,281 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:42,282 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:42,283 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:42,427 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:42,485 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:42,494 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:42,546 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:42,547 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:42,547 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:42,688 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:42,752 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:42,757 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:42,809 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:42,810 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:42,811 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:42,964 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:43,029 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:43,035 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:43,091 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:43,092 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:43,092 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:35:43,242 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:43,304 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:43,309 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:43,357 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:43,358 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:43,358 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:43,507 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:43,568 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:43,574 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:43,627 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:43,628 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:43,629 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:43,786 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:43,849 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:43,857 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:43,914 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:43,915 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:43,915 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:35:44,074 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:44,137 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:44,144 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:44,191 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:44,192 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:44,192 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:44,347 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:44,402 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:44,407 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:44,453 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:44,454 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:44,454 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:44,506 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:35:44,509 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:45,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:35:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:45,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-23 20:35:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:45,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:35:45,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723406174] [2020-10-23 20:35:45,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:45,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-23 20:35:45,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134038304] [2020-10-23 20:35:45,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-23 20:35:45,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:45,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-23 20:35:45,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-23 20:35:45,032 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 20 states. [2020-10-23 20:35:46,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:35:46,161 INFO L93 Difference]: Finished difference Result 191 states and 193 transitions. [2020-10-23 20:35:46,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-23 20:35:46,162 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 132 [2020-10-23 20:35:46,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:35:46,164 INFO L225 Difference]: With dead ends: 191 [2020-10-23 20:35:46,164 INFO L226 Difference]: Without dead ends: 155 [2020-10-23 20:35:46,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=405, Invalid=855, Unknown=0, NotChecked=0, Total=1260 [2020-10-23 20:35:46,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-23 20:35:46,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 147. [2020-10-23 20:35:46,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-23 20:35:46,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2020-10-23 20:35:46,177 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 132 [2020-10-23 20:35:46,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:35:46,178 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2020-10-23 20:35:46,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-23 20:35:46,178 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2020-10-23 20:35:46,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-23 20:35:46,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:46,181 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:35:46,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:35:46,181 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:46,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:46,182 INFO L82 PathProgramCache]: Analyzing trace with hash 947277155, now seen corresponding path program 9 times [2020-10-23 20:35:46,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:46,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476802189] [2020-10-23 20:35:46,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:46,300 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:46,360 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:46,369 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:46,419 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:46,421 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:46,421 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:46,584 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:46,644 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:46,648 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:46,696 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:46,697 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:46,698 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:46,849 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:46,905 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:46,915 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:46,965 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:46,966 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:46,966 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:47,133 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:47,193 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:47,210 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:47,270 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:47,272 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:47,272 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:47,428 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:47,496 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:47,502 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:47,559 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:47,560 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:47,560 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:35:47,711 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:47,768 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:47,774 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:47,825 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:47,826 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:47,826 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:47,970 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:48,025 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:48,032 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:48,079 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:48,080 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:48,080 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:48,222 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:48,284 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:48,289 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:48,347 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:48,348 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:48,349 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:35:48,503 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:48,561 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:48,567 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:48,620 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:48,621 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:48,622 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:48,773 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:48,832 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:48,838 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:48,893 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:48,894 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:48,894 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:48,948 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:35:48,950 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:49,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:35:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:49,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 20:35:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:35:49,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476802189] [2020-10-23 20:35:49,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:49,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-10-23 20:35:49,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772936201] [2020-10-23 20:35:49,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-23 20:35:49,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:49,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-23 20:35:49,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-10-23 20:35:49,556 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 22 states. [2020-10-23 20:35:50,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:35:50,561 INFO L93 Difference]: Finished difference Result 193 states and 195 transitions. [2020-10-23 20:35:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-23 20:35:50,562 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 142 [2020-10-23 20:35:50,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:35:50,566 INFO L225 Difference]: With dead ends: 193 [2020-10-23 20:35:50,567 INFO L226 Difference]: Without dead ends: 157 [2020-10-23 20:35:50,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=500, Invalid=1060, Unknown=0, NotChecked=0, Total=1560 [2020-10-23 20:35:50,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-23 20:35:50,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-10-23 20:35:50,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-23 20:35:50,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2020-10-23 20:35:50,584 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 142 [2020-10-23 20:35:50,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:35:50,584 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2020-10-23 20:35:50,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-23 20:35:50,584 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2020-10-23 20:35:50,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-23 20:35:50,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:50,587 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:35:50,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 20:35:50,588 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:50,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:50,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1246179191, now seen corresponding path program 10 times [2020-10-23 20:35:50,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:50,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419370726] [2020-10-23 20:35:50,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:50,702 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:35:50,713 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:50,777 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:50,782 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:50,829 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:50,830 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:50,830 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:50,990 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:51,057 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:51,062 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:51,115 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:51,116 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:51,117 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:51,267 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:51,333 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:51,338 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:51,390 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:51,391 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:51,391 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:51,542 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:51,604 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:51,609 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:51,670 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:51,671 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:51,671 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:51,822 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:51,897 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:51,902 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:51,960 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:51,961 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:51,961 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:35:52,109 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:52,168 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:52,173 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:52,225 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:52,225 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:52,226 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:52,379 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:52,438 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:52,444 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:52,497 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:52,498 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:52,499 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:52,644 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:52,710 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:52,715 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:52,773 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:52,773 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:52,774 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:35:52,932 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:52,991 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:52,996 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:53,049 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:53,050 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:53,051 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:35:53,189 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:53,249 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:53,255 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:53,304 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:35:53,305 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:35:53,305 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:35:53,357 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:35:53,359 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:03,281 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 8 [2020-10-23 20:36:03,555 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 9 [2020-10-23 20:36:06,280 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 795 DAG size of output: 8 [2020-10-23 20:36:09,093 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 797 DAG size of output: 9 [2020-10-23 20:36:14,900 WARN L193 SmtUtils]: Spent 5.17 s on a formula simplification. DAG size of input: 1392 DAG size of output: 11 [2020-10-23 20:36:20,451 WARN L193 SmtUtils]: Spent 4.86 s on a formula simplification. DAG size of input: 1399 DAG size of output: 10 [2020-10-23 20:36:27,262 WARN L193 SmtUtils]: Spent 6.36 s on a formula simplification. DAG size of input: 687 DAG size of output: 10 [2020-10-23 20:36:27,628 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 29 [2020-10-23 20:36:27,983 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 36 [2020-10-23 20:36:28,587 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 45 [2020-10-23 20:36:29,166 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 38 [2020-10-23 20:36:29,503 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 33 [2020-10-23 20:36:29,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:36:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:29,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 20:36:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:29,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:36:29,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419370726] [2020-10-23 20:36:29,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:36:29,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2020-10-23 20:36:29,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879736849] [2020-10-23 20:36:29,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-23 20:36:29,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:36:29,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-23 20:36:29,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2020-10-23 20:36:29,939 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 31 states. [2020-10-23 20:36:33,079 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2020-10-23 20:36:33,302 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2020-10-23 20:36:33,549 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2020-10-23 20:36:34,018 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2020-10-23 20:36:34,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:36:34,881 INFO L93 Difference]: Finished difference Result 179 states and 180 transitions. [2020-10-23 20:36:34,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-23 20:36:34,882 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 152 [2020-10-23 20:36:34,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:36:34,884 INFO L225 Difference]: With dead ends: 179 [2020-10-23 20:36:34,884 INFO L226 Difference]: Without dead ends: 162 [2020-10-23 20:36:34,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=248, Invalid=3058, Unknown=0, NotChecked=0, Total=3306 [2020-10-23 20:36:34,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-23 20:36:34,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 159. [2020-10-23 20:36:34,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-23 20:36:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2020-10-23 20:36:34,901 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 152 [2020-10-23 20:36:34,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:36:34,902 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2020-10-23 20:36:34,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-23 20:36:34,902 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2020-10-23 20:36:34,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-23 20:36:34,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:36:34,905 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:36:34,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-23 20:36:34,905 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:36:34,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:36:34,906 INFO L82 PathProgramCache]: Analyzing trace with hash 388670129, now seen corresponding path program 1 times [2020-10-23 20:36:34,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:36:34,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57011695] [2020-10-23 20:36:34,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:36:35,068 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:35,127 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:35,133 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:35,186 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:35,187 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:35,188 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:36:35,351 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:35,415 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:35,421 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:35,473 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:35,474 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:35,474 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:36:35,655 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:35,718 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:35,724 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:35,778 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:35,779 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:35,780 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:36:35,936 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:36,000 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:36,005 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:36,058 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:36,059 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:36,059 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:36:36,219 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:36,294 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:36,302 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:36,362 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:36,363 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:36,364 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:36:36,534 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:36,600 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:36,606 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:36,677 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:36,678 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:36,679 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:36:36,866 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-23 20:36:36,876 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:36,953 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:36,959 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:37,019 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:37,020 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:37,020 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:36:37,173 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:37,240 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:37,246 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:37,306 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:37,308 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:37,308 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:36:37,472 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:37,539 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:37,545 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:37,595 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:37,596 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:37,596 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:36:37,754 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:37,818 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:37,824 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:37,880 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:37,881 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:37,881 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:36:37,935 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:36:37,949 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:36:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:41,305 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 29 [2020-10-23 20:36:41,748 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 34 [2020-10-23 20:36:42,230 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 41 [2020-10-23 20:36:42,906 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 59 [2020-10-23 20:36:43,582 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 47 [2020-10-23 20:36:44,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:36:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:44,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:36:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:45,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:36:45,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57011695] [2020-10-23 20:36:45,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:36:45,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2020-10-23 20:36:45,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594409889] [2020-10-23 20:36:45,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-23 20:36:45,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:36:45,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-23 20:36:45,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1524, Unknown=0, NotChecked=0, Total=1640 [2020-10-23 20:36:45,080 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 41 states. [2020-10-23 20:36:49,298 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-23 20:36:49,492 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-23 20:36:49,804 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-10-23 20:36:52,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:36:52,483 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2020-10-23 20:36:52,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-23 20:36:52,484 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 158 [2020-10-23 20:36:52,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:36:52,488 INFO L225 Difference]: With dead ends: 176 [2020-10-23 20:36:52,488 INFO L226 Difference]: Without dead ends: 168 [2020-10-23 20:36:52,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1453 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=378, Invalid=5784, Unknown=0, NotChecked=0, Total=6162 [2020-10-23 20:36:52,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-23 20:36:52,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 165. [2020-10-23 20:36:52,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-23 20:36:52,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2020-10-23 20:36:52,510 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 158 [2020-10-23 20:36:52,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:36:52,511 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2020-10-23 20:36:52,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-23 20:36:52,511 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2020-10-23 20:36:52,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-23 20:36:52,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:36:52,513 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:36:52,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-23 20:36:52,514 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:36:52,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:36:52,514 INFO L82 PathProgramCache]: Analyzing trace with hash 7354073, now seen corresponding path program 2 times [2020-10-23 20:36:52,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:36:52,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603287964] [2020-10-23 20:36:52,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:36:52,658 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:36:52,668 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:52,734 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:52,742 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:52,810 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:52,811 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:52,811 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:36:53,016 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:36:53,026 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:53,108 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:53,115 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:53,180 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:53,181 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:53,182 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:36:53,439 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:36:53,451 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:53,536 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:53,543 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:53,610 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:53,611 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:53,611 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:36:53,796 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:36:53,811 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:53,873 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:53,878 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:53,934 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:53,935 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:53,935 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:36:54,167 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:54,236 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:54,241 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:54,294 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:54,294 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:54,295 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:36:54,488 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:36:54,500 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:54,562 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:54,567 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:54,634 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:54,635 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:54,636 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:36:54,841 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:36:54,852 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:54,934 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:54,941 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:55,005 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:55,006 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:55,007 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:36:55,235 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:36:55,245 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:55,308 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:55,315 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:55,370 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:55,371 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:55,371 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:36:55,540 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:55,607 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:55,613 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:55,668 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:55,669 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:55,669 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:36:55,835 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:36:55,846 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:55,914 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:55,920 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:55,978 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:36:55,979 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:36:55,980 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:36:56,037 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:36:56,039 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:36:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:05,048 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 11 [2020-10-23 20:37:05,238 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 8 [2020-10-23 20:37:05,528 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 8 [2020-10-23 20:37:05,799 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 11 [2020-10-23 20:37:06,122 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 8 [2020-10-23 20:37:06,503 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 8 [2020-10-23 20:37:07,182 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 8 [2020-10-23 20:37:07,711 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 8 [2020-10-23 20:37:08,647 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 8 [2020-10-23 20:37:09,047 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 23 [2020-10-23 20:37:09,647 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 28 [2020-10-23 20:37:10,455 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 44 [2020-10-23 20:37:11,104 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 25 [2020-10-23 20:37:11,687 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 31 [2020-10-23 20:37:12,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:37:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:12,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:37:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:37:12,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603287964] [2020-10-23 20:37:12,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:37:12,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2020-10-23 20:37:12,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994492282] [2020-10-23 20:37:12,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-23 20:37:12,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:37:12,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-23 20:37:12,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2020-10-23 20:37:12,415 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 33 states. [2020-10-23 20:37:16,088 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-23 20:37:16,402 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-23 20:37:17,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:37:17,587 INFO L93 Difference]: Finished difference Result 191 states and 192 transitions. [2020-10-23 20:37:17,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-23 20:37:17,589 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 164 [2020-10-23 20:37:17,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:37:17,591 INFO L225 Difference]: With dead ends: 191 [2020-10-23 20:37:17,591 INFO L226 Difference]: Without dead ends: 174 [2020-10-23 20:37:17,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=263, Invalid=3277, Unknown=0, NotChecked=0, Total=3540 [2020-10-23 20:37:17,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-23 20:37:17,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 171. [2020-10-23 20:37:17,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-23 20:37:17,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2020-10-23 20:37:17,610 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 164 [2020-10-23 20:37:17,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:37:17,610 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2020-10-23 20:37:17,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-23 20:37:17,610 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2020-10-23 20:37:17,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-23 20:37:17,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:37:17,613 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:37:17,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-23 20:37:17,613 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:37:17,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:37:17,614 INFO L82 PathProgramCache]: Analyzing trace with hash -2144334591, now seen corresponding path program 3 times [2020-10-23 20:37:17,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:37:17,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689609522] [2020-10-23 20:37:17,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:37:17,739 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:17,800 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:17,806 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:17,859 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:17,859 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:17,859 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:37:18,057 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:18,132 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:18,139 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:18,202 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:18,203 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:18,203 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:37:18,423 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:18,497 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:18,504 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:18,568 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:18,569 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:18,569 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:37:18,735 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:18,799 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:18,805 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:18,861 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:18,862 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:18,862 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:37:19,091 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:19,159 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:19,165 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:19,219 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:19,220 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:19,220 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:37:19,425 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:19,489 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:19,495 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:19,548 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:19,550 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:19,550 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:37:19,713 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:19,774 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:19,779 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:19,836 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:19,837 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:19,837 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:37:20,032 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:20,102 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:20,108 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:20,164 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:20,165 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:20,165 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:37:20,317 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:20,380 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:20,386 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:20,445 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:20,446 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:20,446 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:37:20,619 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:20,687 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:20,694 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:20,759 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:20,760 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:20,760 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:37:20,817 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:37:20,819 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:37:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:29,245 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 8 [2020-10-23 20:37:29,487 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 11 [2020-10-23 20:37:29,669 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 8 [2020-10-23 20:37:29,906 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 8 [2020-10-23 20:37:30,187 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 11 [2020-10-23 20:37:30,490 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 8 [2020-10-23 20:37:30,881 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 8 [2020-10-23 20:37:31,603 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 8 [2020-10-23 20:37:32,167 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 8 [2020-10-23 20:37:33,206 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 8 [2020-10-23 20:37:33,588 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 23 [2020-10-23 20:37:34,105 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 28 [2020-10-23 20:37:34,832 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 31 [2020-10-23 20:37:35,686 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 25 [2020-10-23 20:37:36,397 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 31 [2020-10-23 20:37:37,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:37:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:37,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-23 20:37:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:37,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:37:37,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689609522] [2020-10-23 20:37:37,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:37:37,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2020-10-23 20:37:37,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802179383] [2020-10-23 20:37:37,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-23 20:37:37,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:37:37,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-23 20:37:37,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2020-10-23 20:37:37,235 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 34 states. [2020-10-23 20:37:42,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:37:42,402 INFO L93 Difference]: Finished difference Result 197 states and 198 transitions. [2020-10-23 20:37:42,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-23 20:37:42,403 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 170 [2020-10-23 20:37:42,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:37:42,406 INFO L225 Difference]: With dead ends: 197 [2020-10-23 20:37:42,406 INFO L226 Difference]: Without dead ends: 180 [2020-10-23 20:37:42,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=295, Invalid=3611, Unknown=0, NotChecked=0, Total=3906 [2020-10-23 20:37:42,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-23 20:37:42,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 177. [2020-10-23 20:37:42,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-23 20:37:42,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2020-10-23 20:37:42,422 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 170 [2020-10-23 20:37:42,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:37:42,423 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2020-10-23 20:37:42,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-23 20:37:42,423 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2020-10-23 20:37:42,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-23 20:37:42,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:37:42,425 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:37:42,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-23 20:37:42,426 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:37:42,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:37:42,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1372543703, now seen corresponding path program 4 times [2020-10-23 20:37:42,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:37:42,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225596953] [2020-10-23 20:37:42,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:37:42,551 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:37:42,561 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:42,630 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:42,636 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:42,696 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:42,697 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:42,697 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:37:42,896 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:37:42,906 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:42,983 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:42,990 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:43,056 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:43,057 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:43,057 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:37:43,254 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:43,327 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:43,333 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:43,397 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:43,398 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:43,398 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:37:43,555 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:43,621 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:43,628 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:43,679 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:43,679 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:43,680 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:37:43,909 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:43,975 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:43,981 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:44,038 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:44,038 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:44,039 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:37:44,234 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:44,299 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:44,305 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:44,359 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:44,360 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:44,361 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:37:44,519 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:37:44,535 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:44,601 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:44,612 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:44,672 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:44,674 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:44,674 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:37:44,913 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:37:44,925 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:44,989 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:44,995 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:45,052 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:45,052 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:45,053 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:37:45,216 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:45,284 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:45,290 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:45,346 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:45,347 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:45,347 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:37:45,507 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:45,577 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:45,582 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:45,639 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:37:45,640 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:37:45,641 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:37:45,693 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:37:45,695 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:37:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:50,834 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 11 [2020-10-23 20:37:51,033 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 8 [2020-10-23 20:37:51,404 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 9 [2020-10-23 20:37:51,631 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 8 [2020-10-23 20:37:52,034 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 8 [2020-10-23 20:37:52,849 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 8 [2020-10-23 20:37:53,741 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 428 DAG size of output: 8 [2020-10-23 20:37:54,973 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 411 DAG size of output: 9 [2020-10-23 20:37:56,356 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 583 DAG size of output: 8 [2020-10-23 20:37:57,982 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 563 DAG size of output: 9 [2020-10-23 20:38:00,742 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 746 DAG size of output: 8 [2020-10-23 20:38:01,248 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 33 [2020-10-23 20:38:01,866 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 34 [2020-10-23 20:38:02,783 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 52 [2020-10-23 20:38:03,701 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 59 [2020-10-23 20:38:04,537 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 52 [2020-10-23 20:38:05,458 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-10-23 20:38:06,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:38:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:06,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-23 20:38:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:06,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:38:06,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225596953] [2020-10-23 20:38:06,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:38:06,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2020-10-23 20:38:06,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066111525] [2020-10-23 20:38:06,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-23 20:38:06,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:38:06,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-23 20:38:06,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1762, Unknown=0, NotChecked=0, Total=1892 [2020-10-23 20:38:06,968 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 44 states. [2020-10-23 20:38:12,092 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-10-23 20:38:12,448 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2020-10-23 20:38:12,963 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-10-23 20:38:13,548 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-10-23 20:38:13,829 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-23 20:38:14,471 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-23 20:38:14,755 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-23 20:38:15,304 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-23 20:38:15,557 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-23 20:38:16,093 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-10-23 20:38:16,348 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-10-23 20:38:17,039 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-10-23 20:38:18,069 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-23 20:38:18,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:38:18,822 INFO L93 Difference]: Finished difference Result 194 states and 196 transitions. [2020-10-23 20:38:18,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-23 20:38:18,824 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 176 [2020-10-23 20:38:18,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:38:18,826 INFO L225 Difference]: With dead ends: 194 [2020-10-23 20:38:18,827 INFO L226 Difference]: Without dead ends: 186 [2020-10-23 20:38:18,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2157 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=591, Invalid=8151, Unknown=0, NotChecked=0, Total=8742 [2020-10-23 20:38:18,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-23 20:38:18,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 183. [2020-10-23 20:38:18,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-23 20:38:18,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2020-10-23 20:38:18,847 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 176 [2020-10-23 20:38:18,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:38:18,848 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2020-10-23 20:38:18,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-23 20:38:18,848 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2020-10-23 20:38:18,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-23 20:38:18,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:38:18,851 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:38:18,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-23 20:38:18,851 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:38:18,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:38:18,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1398308689, now seen corresponding path program 5 times [2020-10-23 20:38:18,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:38:18,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148669551] [2020-10-23 20:38:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:38:19,002 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:38:19,012 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:19,082 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:19,089 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:19,147 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:19,148 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:19,148 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:38:19,361 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:19,438 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:19,450 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:19,516 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:19,517 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:19,517 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:38:19,631 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-23 20:38:19,772 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:38:19,782 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:19,861 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:19,866 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:19,935 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:19,936 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:19,937 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:38:20,115 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:38:20,125 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:20,202 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:20,208 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:20,270 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:20,271 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:20,271 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:38:20,522 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:38:20,533 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:20,603 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:20,610 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:20,670 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:20,671 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:20,671 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:38:20,880 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:20,949 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:20,954 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:21,016 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:21,017 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:21,018 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:38:21,190 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:38:21,200 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:21,274 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:21,280 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:21,342 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:21,342 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:21,343 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:38:21,549 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:38:21,570 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:21,644 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:21,650 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:21,715 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:21,716 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:21,716 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:38:21,881 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-23 20:38:21,891 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:21,963 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:21,969 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:22,031 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:22,032 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:22,032 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:38:22,197 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:38:22,208 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:22,278 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:22,284 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:22,341 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:38:22,343 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:38:22,343 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:38:22,401 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:38:22,402 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:38:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:28,038 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 8 [2020-10-23 20:38:28,500 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 8 [2020-10-23 20:38:28,986 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 11 [2020-10-23 20:38:30,470 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 650 DAG size of output: 8 [2020-10-23 20:38:31,661 WARN L193 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 624 DAG size of output: 8 [2020-10-23 20:38:34,962 WARN L193 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 1059 DAG size of output: 8 [2020-10-23 20:38:37,931 WARN L193 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 1033 DAG size of output: 9 [2020-10-23 20:38:48,043 WARN L193 SmtUtils]: Spent 9.10 s on a formula simplification. DAG size of input: 2086 DAG size of output: 8 [2020-10-23 20:38:48,458 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 25 [2020-10-23 20:38:49,010 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 35 [2020-10-23 20:38:49,773 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 46 [2020-10-23 20:38:50,599 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 38 [2020-10-23 20:38:51,112 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 33 [2020-10-23 20:38:52,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:38:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:52,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-23 20:38:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:38:52,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148669551] [2020-10-23 20:38:52,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:38:52,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2020-10-23 20:38:52,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667470881] [2020-10-23 20:38:52,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-23 20:38:52,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:38:52,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-23 20:38:52,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1149, Unknown=0, NotChecked=0, Total=1260 [2020-10-23 20:38:52,790 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 36 states. [2020-10-23 20:38:57,200 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2020-10-23 20:38:57,506 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2020-10-23 20:38:58,093 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2020-10-23 20:38:58,408 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2020-10-23 20:38:59,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:38:59,880 INFO L93 Difference]: Finished difference Result 209 states and 210 transitions. [2020-10-23 20:38:59,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-23 20:38:59,882 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 182 [2020-10-23 20:38:59,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:38:59,884 INFO L225 Difference]: With dead ends: 209 [2020-10-23 20:38:59,885 INFO L226 Difference]: Without dead ends: 192 [2020-10-23 20:38:59,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=408, Invalid=4848, Unknown=0, NotChecked=0, Total=5256 [2020-10-23 20:38:59,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-23 20:38:59,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2020-10-23 20:38:59,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-23 20:38:59,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2020-10-23 20:38:59,907 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 182 [2020-10-23 20:38:59,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:38:59,907 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2020-10-23 20:38:59,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-23 20:38:59,907 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2020-10-23 20:38:59,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-23 20:38:59,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:38:59,909 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:38:59,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-23 20:38:59,909 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:38:59,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:38:59,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1850860679, now seen corresponding path program 6 times [2020-10-23 20:38:59,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:38:59,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231824852] [2020-10-23 20:38:59,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:39:00,029 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:39:00,039 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:00,116 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:00,122 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:00,190 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:00,191 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:00,191 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:39:00,426 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:39:00,441 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:00,524 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:00,530 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:00,597 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:00,598 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:00,599 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:39:00,834 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:39:00,843 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:00,927 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:00,933 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:01,001 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:01,001 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:01,001 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:39:01,193 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:39:01,205 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:01,292 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:01,298 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:01,363 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:01,364 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:01,365 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:39:01,616 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:39:01,625 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:01,708 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:01,713 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:01,776 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:01,777 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:01,778 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:39:02,004 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:39:02,014 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:02,094 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:02,101 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:02,169 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:02,170 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:02,170 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:39:02,343 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:39:02,354 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:02,436 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:02,442 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:02,523 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:02,524 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:02,525 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:39:02,740 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:39:02,757 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:02,855 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:02,864 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:02,946 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:02,947 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:02,948 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:39:03,179 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-23 20:39:03,193 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:03,283 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:03,290 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:03,366 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:03,367 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:03,368 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:39:03,557 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:39:03,575 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:03,658 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:03,665 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:03,757 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:03,758 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:03,758 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:39:03,823 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:39:03,825 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:39:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:11,680 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 8 [2020-10-23 20:39:11,944 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 11 [2020-10-23 20:39:12,141 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 8 [2020-10-23 20:39:12,418 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 8 [2020-10-23 20:39:12,740 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 11 [2020-10-23 20:39:13,074 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 8 [2020-10-23 20:39:13,466 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 8 [2020-10-23 20:39:14,246 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 8 [2020-10-23 20:39:14,893 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 8 [2020-10-23 20:39:15,979 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 8 [2020-10-23 20:39:16,391 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 22 [2020-10-23 20:39:16,970 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 28 [2020-10-23 20:39:17,854 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 31 [2020-10-23 20:39:18,762 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 25 [2020-10-23 20:39:19,574 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 31 [2020-10-23 20:39:20,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:39:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:20,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-23 20:39:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:20,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:39:20,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231824852] [2020-10-23 20:39:20,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:39:20,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2020-10-23 20:39:20,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464613734] [2020-10-23 20:39:20,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-23 20:39:20,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:39:20,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-23 20:39:20,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1207, Unknown=0, NotChecked=0, Total=1332 [2020-10-23 20:39:20,921 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand 37 states. [2020-10-23 20:39:27,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:39:27,594 INFO L93 Difference]: Finished difference Result 215 states and 216 transitions. [2020-10-23 20:39:27,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-23 20:39:27,595 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 188 [2020-10-23 20:39:27,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:39:27,598 INFO L225 Difference]: With dead ends: 215 [2020-10-23 20:39:27,598 INFO L226 Difference]: Without dead ends: 198 [2020-10-23 20:39:27,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1060 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=427, Invalid=4685, Unknown=0, NotChecked=0, Total=5112 [2020-10-23 20:39:27,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-23 20:39:27,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 195. [2020-10-23 20:39:27,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-23 20:39:27,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2020-10-23 20:39:27,620 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 188 [2020-10-23 20:39:27,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:39:27,621 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2020-10-23 20:39:27,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-23 20:39:27,621 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2020-10-23 20:39:27,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-23 20:39:27,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:39:27,622 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:39:27,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-23 20:39:27,623 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:39:27,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:39:27,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1940391519, now seen corresponding path program 7 times [2020-10-23 20:39:27,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:39:27,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930656204] [2020-10-23 20:39:27,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:39:27,806 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:39:27,821 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:27,916 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:27,924 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:28,002 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:28,003 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:28,003 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:39:28,259 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-23 20:39:28,460 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:39:28,473 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:28,582 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-23 20:39:28,583 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:28,590 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:28,670 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:28,670 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:28,671 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:39:28,914 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:39:28,925 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:29,013 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:29,019 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:29,095 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:29,095 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:29,096 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:39:29,298 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:39:29,317 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:29,405 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:29,412 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:29,483 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:29,483 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:29,484 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:39:29,761 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:39:29,776 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:29,857 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:29,863 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:29,934 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:29,935 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:29,935 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:39:30,165 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:39:30,181 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:30,262 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:30,269 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:30,340 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:30,340 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:30,341 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:39:30,503 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:30,583 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:30,589 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:30,652 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:30,653 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:30,653 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:39:30,866 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:39:30,878 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:30,946 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:30,951 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:31,019 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:31,020 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:31,020 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:39:31,188 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-23 20:39:31,200 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:31,273 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:31,280 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:31,336 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:31,337 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:31,338 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:39:31,504 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:39:31,514 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:31,585 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:31,591 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:31,656 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:31,657 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:31,657 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:39:31,712 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:39:31,713 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:39:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:39,265 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 8 [2020-10-23 20:39:39,535 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 11 [2020-10-23 20:39:39,741 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 8 [2020-10-23 20:39:40,008 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 8 [2020-10-23 20:39:40,338 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 11 [2020-10-23 20:39:40,687 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 8 [2020-10-23 20:39:41,095 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 8 [2020-10-23 20:39:41,896 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 8 [2020-10-23 20:39:42,514 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 8 [2020-10-23 20:39:43,606 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 8 [2020-10-23 20:39:44,020 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 29 [2020-10-23 20:39:44,673 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 36 [2020-10-23 20:39:45,508 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 44 [2020-10-23 20:39:46,447 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 38 [2020-10-23 20:39:47,169 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 33 [2020-10-23 20:39:48,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:39:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:48,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-23 20:39:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:48,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:39:48,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930656204] [2020-10-23 20:39:48,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:39:48,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2020-10-23 20:39:48,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510134529] [2020-10-23 20:39:48,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-23 20:39:48,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:39:48,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-23 20:39:48,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1278, Unknown=0, NotChecked=0, Total=1406 [2020-10-23 20:39:48,751 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 38 states. [2020-10-23 20:39:53,571 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2020-10-23 20:39:53,830 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2020-10-23 20:39:54,156 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-10-23 20:39:54,368 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2020-10-23 20:39:54,789 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-10-23 20:39:55,121 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2020-10-23 20:39:57,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:39:57,201 INFO L93 Difference]: Finished difference Result 221 states and 222 transitions. [2020-10-23 20:39:57,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-23 20:39:57,203 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 194 [2020-10-23 20:39:57,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:39:57,205 INFO L225 Difference]: With dead ends: 221 [2020-10-23 20:39:57,205 INFO L226 Difference]: Without dead ends: 204 [2020-10-23 20:39:57,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1412 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=514, Invalid=5648, Unknown=0, NotChecked=0, Total=6162 [2020-10-23 20:39:57,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-23 20:39:57,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 201. [2020-10-23 20:39:57,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-23 20:39:57,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2020-10-23 20:39:57,230 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 194 [2020-10-23 20:39:57,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:39:57,231 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2020-10-23 20:39:57,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-23 20:39:57,231 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2020-10-23 20:39:57,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-23 20:39:57,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:39:57,233 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:39:57,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-23 20:39:57,233 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:39:57,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:39:57,234 INFO L82 PathProgramCache]: Analyzing trace with hash 261921225, now seen corresponding path program 8 times [2020-10-23 20:39:57,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:39:57,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062993145] [2020-10-23 20:39:57,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:39:57,412 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:39:57,426 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:57,536 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-23 20:39:57,537 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:57,547 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:57,632 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:57,632 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:57,632 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:39:57,918 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:39:57,931 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:58,038 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-23 20:39:58,039 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:58,047 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:58,140 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:58,141 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:58,141 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:39:58,385 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:39:58,397 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:58,486 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:58,493 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:58,566 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:58,566 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:58,567 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:39:58,768 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:39:58,781 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:58,862 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:58,870 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:58,934 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:58,935 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:58,935 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:39:59,304 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:39:59,314 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:59,402 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:59,408 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:59,477 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:59,477 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:59,478 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:39:59,702 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:39:59,714 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:59,794 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:59,800 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:59,866 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:39:59,867 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:39:59,867 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:40:00,044 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:40:00,054 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:00,136 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:00,143 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:00,213 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:00,215 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:00,215 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:40:00,443 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:40:00,455 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:00,532 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:00,539 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:00,607 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:00,607 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:00,607 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:40:00,794 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-23 20:40:00,805 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:00,885 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:00,893 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:00,958 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:00,959 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:00,959 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:40:01,162 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:40:01,176 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:01,256 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:01,263 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:01,322 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:01,322 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:01,323 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:40:01,383 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:40:01,386 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:40:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:05,318 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 8 [2020-10-23 20:40:05,525 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 8 [2020-10-23 20:40:05,839 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 8 [2020-10-23 20:40:06,185 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 8 [2020-10-23 20:40:06,760 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 8 [2020-10-23 20:40:07,300 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 8 [2020-10-23 20:40:08,248 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 8 [2020-10-23 20:40:08,972 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 35 [2020-10-23 20:40:09,792 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 44 [2020-10-23 20:40:10,805 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 42 [2020-10-23 20:40:11,255 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 15 [2020-10-23 20:40:13,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:40:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:13,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-23 20:40:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:40:13,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062993145] [2020-10-23 20:40:13,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:40:13,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2020-10-23 20:40:13,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283580455] [2020-10-23 20:40:13,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-23 20:40:13,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:40:13,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-23 20:40:13,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1342, Unknown=0, NotChecked=0, Total=1482 [2020-10-23 20:40:13,318 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand 39 states. [2020-10-23 20:40:19,243 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-10-23 20:40:19,897 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-10-23 20:40:20,240 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-10-23 20:40:23,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:40:23,206 INFO L93 Difference]: Finished difference Result 233 states and 235 transitions. [2020-10-23 20:40:23,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-23 20:40:23,209 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 200 [2020-10-23 20:40:23,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:40:23,211 INFO L225 Difference]: With dead ends: 233 [2020-10-23 20:40:23,211 INFO L226 Difference]: Without dead ends: 216 [2020-10-23 20:40:23,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=633, Invalid=6339, Unknown=0, NotChecked=0, Total=6972 [2020-10-23 20:40:23,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-23 20:40:23,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2020-10-23 20:40:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-23 20:40:23,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2020-10-23 20:40:23,236 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 200 [2020-10-23 20:40:23,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:40:23,237 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2020-10-23 20:40:23,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-23 20:40:23,237 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2020-10-23 20:40:23,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-23 20:40:23,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:40:23,239 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:40:23,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-23 20:40:23,239 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:40:23,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:40:23,240 INFO L82 PathProgramCache]: Analyzing trace with hash 514859033, now seen corresponding path program 9 times [2020-10-23 20:40:23,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:40:23,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253175503] [2020-10-23 20:40:23,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:40:23,414 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:40:23,426 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:23,535 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-23 20:40:23,536 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:23,544 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:23,629 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:23,630 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:23,630 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:40:23,908 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:40:23,925 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:24,017 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:24,025 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:24,098 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:24,098 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:24,098 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:40:24,343 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:40:24,353 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:24,439 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:24,447 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:24,519 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:24,520 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:24,520 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:40:24,724 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:40:24,735 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:24,816 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:24,822 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:24,885 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:24,886 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:24,886 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:40:25,153 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:40:25,164 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:25,240 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:25,246 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:25,316 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:25,317 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:25,317 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:40:25,552 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:40:25,563 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:25,648 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:25,654 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:25,722 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:25,723 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:25,723 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:40:25,917 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:40:25,927 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:26,006 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:26,013 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:26,084 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:26,084 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:26,085 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:40:26,315 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:40:26,333 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:26,421 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:26,427 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:26,494 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:26,495 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:26,495 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:40:26,684 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-23 20:40:26,697 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:26,779 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:26,786 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:26,854 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:26,855 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:26,855 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:40:27,042 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:40:27,054 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:27,136 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:27,142 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:27,207 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:40:27,208 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:40:27,208 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:40:27,272 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:40:27,274 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:40:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:30,813 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 8 [2020-10-23 20:40:31,571 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 417 DAG size of output: 8 [2020-10-23 20:40:32,204 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 418 DAG size of output: 8 [2020-10-23 20:40:33,587 WARN L193 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 672 DAG size of output: 8 [2020-10-23 20:40:34,825 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 674 DAG size of output: 8 [2020-10-23 20:40:37,243 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 931 DAG size of output: 8 [2020-10-23 20:40:37,487 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2020-10-23 20:40:37,832 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2020-10-23 20:40:38,379 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 38 [2020-10-23 20:40:38,887 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-10-23 20:40:39,238 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2020-10-23 20:40:42,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:40:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:42,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-23 20:40:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:40:43,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253175503] [2020-10-23 20:40:43,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:40:43,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2020-10-23 20:40:43,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537903631] [2020-10-23 20:40:43,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-23 20:40:43,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:40:43,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-23 20:40:43,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=2136, Unknown=0, NotChecked=0, Total=2256 [2020-10-23 20:40:43,689 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand 48 states. [2020-10-23 20:40:50,480 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-23 20:40:50,965 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-23 20:40:51,241 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-10-23 20:40:51,801 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-10-23 20:40:55,792 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-10-23 20:40:57,501 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-10-23 20:40:58,410 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2020-10-23 20:40:59,779 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-23 20:40:59,999 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-23 20:41:00,235 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-23 20:41:00,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:41:00,798 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2020-10-23 20:41:00,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-23 20:41:00,800 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 212 [2020-10-23 20:41:00,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:41:00,803 INFO L225 Difference]: With dead ends: 230 [2020-10-23 20:41:00,803 INFO L226 Difference]: Without dead ends: 222 [2020-10-23 20:41:00,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2337 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=458, Invalid=10048, Unknown=0, NotChecked=0, Total=10506 [2020-10-23 20:41:00,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-23 20:41:00,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 219. [2020-10-23 20:41:00,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-23 20:41:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2020-10-23 20:41:00,832 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 212 [2020-10-23 20:41:00,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:41:00,833 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2020-10-23 20:41:00,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-23 20:41:00,833 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2020-10-23 20:41:00,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-23 20:41:00,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:41:00,836 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:41:00,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-23 20:41:00,837 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:41:00,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:41:00,837 INFO L82 PathProgramCache]: Analyzing trace with hash 2024539713, now seen corresponding path program 10 times [2020-10-23 20:41:00,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:41:00,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387173155] [2020-10-23 20:41:00,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:41:01,005 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:41:01,018 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:01,115 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:01,123 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:01,199 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:01,200 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:01,200 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:41:01,464 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:41:01,476 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:01,584 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-23 20:41:01,585 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:01,592 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:01,678 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:01,679 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:01,679 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:41:01,947 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:41:01,958 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:02,063 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-23 20:41:02,064 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:02,071 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:02,151 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:02,151 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:02,152 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:115 [2020-10-23 20:41:02,336 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:41:02,348 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:02,425 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:02,432 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:02,497 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:02,498 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:02,498 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:41:02,757 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:41:02,768 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:02,846 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:02,853 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:02,918 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:02,918 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:02,918 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:41:03,124 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:41:03,133 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:03,211 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:03,217 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:03,282 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:03,283 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:03,283 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:41:03,463 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:41:03,473 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:03,552 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:03,559 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:03,627 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:03,627 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:03,628 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:41:03,852 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:41:03,861 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:03,937 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:03,944 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:04,006 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:04,007 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:04,007 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:112 [2020-10-23 20:41:04,193 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-23 20:41:04,204 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:04,282 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:04,288 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:04,353 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:04,354 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:04,354 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:41:04,531 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:41:04,546 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:04,620 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:04,626 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:04,691 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:04,692 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:04,692 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:110 [2020-10-23 20:41:04,757 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:04,759 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:41:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:11,798 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 8 [2020-10-23 20:41:12,040 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 11 [2020-10-23 20:41:12,230 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 8 [2020-10-23 20:41:12,477 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 8 [2020-10-23 20:41:12,770 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 11 [2020-10-23 20:41:13,087 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 8 [2020-10-23 20:41:13,449 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 8 [2020-10-23 20:41:14,182 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 8 [2020-10-23 20:41:14,739 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 8 [2020-10-23 20:41:15,767 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 8 [2020-10-23 20:41:16,129 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 22 [2020-10-23 20:41:16,685 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 27 [2020-10-23 20:41:17,409 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 31 [2020-10-23 20:41:18,346 WARN L193 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 25 [2020-10-23 20:41:19,249 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 31 [2020-10-23 20:41:20,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:41:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:20,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-23 20:41:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:41:21,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387173155] [2020-10-23 20:41:21,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:41:21,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2020-10-23 20:41:21,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230597983] [2020-10-23 20:41:21,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-23 20:41:21,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:41:21,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-23 20:41:21,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1473, Unknown=0, NotChecked=0, Total=1640 [2020-10-23 20:41:21,037 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 41 states. [2020-10-23 20:41:27,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:41:27,332 INFO L93 Difference]: Finished difference Result 219 states and 220 transitions. [2020-10-23 20:41:27,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-23 20:41:27,332 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 218 [2020-10-23 20:41:27,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:41:27,333 INFO L225 Difference]: With dead ends: 219 [2020-10-23 20:41:27,333 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 20:41:27,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1265 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=462, Invalid=4940, Unknown=0, NotChecked=0, Total=5402 [2020-10-23 20:41:27,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 20:41:27,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 20:41:27,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 20:41:27,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 20:41:27,335 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 218 [2020-10-23 20:41:27,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:41:27,335 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 20:41:27,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-23 20:41:27,335 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 20:41:27,336 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 20:41:27,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-23 20:41:27,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 20:41:28,220 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-10-23 20:41:28,925 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 33 [2020-10-23 20:41:29,667 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 73 [2020-10-23 20:41:30,387 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 73 [2020-10-23 20:41:30,544 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2020-10-23 20:41:30,732 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2020-10-23 20:41:30,867 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2020-10-23 20:41:31,052 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2020-10-23 20:41:31,161 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 29 [2020-10-23 20:41:31,268 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 27 [2020-10-23 20:41:31,635 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 30 [2020-10-23 20:41:31,785 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 35 [2020-10-23 20:41:32,967 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 39 [2020-10-23 20:41:33,190 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-10-23 20:41:34,966 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 129 DAG size of output: 88 [2020-10-23 20:41:35,195 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-10-23 20:41:36,866 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 117 DAG size of output: 86 [2020-10-23 20:41:36,881 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-23 20:41:36,882 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 20:41:36,882 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-23 20:41:36,882 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-23 20:41:36,882 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-23 20:41:36,882 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-23 20:41:36,882 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:41:36,882 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-23 20:41:36,883 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 20:41:36,883 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-10-23 20:41:36,883 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-23 20:41:36,883 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-23 20:41:36,883 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-23 20:41:36,883 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:41:36,883 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:41:36,883 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:41:36,884 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 20:41:36,884 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 20:41:36,884 INFO L270 CegarLoopResult]: At program point L39-6(lines 39 41) the Hoare annotation is: (and (= main_~i~0 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4))) (= |main_~#array~0.offset| 0) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) [2020-10-23 20:41:36,884 INFO L270 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (and (= |main_~#array~0.offset| 0) (<= main_~j~0 9)) [2020-10-23 20:41:36,884 INFO L270 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: (and (= |main_~#array~0.offset| 0) (<= main_~j~0 9)) [2020-10-23 20:41:36,884 INFO L270 CegarLoopResult]: At program point L31-2(line 31) the Hoare annotation is: (and (= |main_~#array~0.offset| 0) (<= main_~j~0 9)) [2020-10-23 20:41:36,884 INFO L270 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (= |main_~#array~0.offset| 0) [2020-10-23 20:41:36,885 INFO L270 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: (= |main_~#array~0.offset| 0) [2020-10-23 20:41:36,885 INFO L270 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: (= |main_~#array~0.offset| 0) [2020-10-23 20:41:36,885 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 22 52) the Hoare annotation is: true [2020-10-23 20:41:36,885 INFO L270 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (.cse7 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4)))) (let ((.cse2 (= |main_~#array~0.offset| 0)) (.cse3 (= .cse0 .cse7))) (or (let ((.cse1 (+ main_~i~0 5))) (and (<= .cse0 .cse1) .cse2 (<= .cse1 .cse0) .cse3)) (let ((.cse4 (+ main_~i~0 8))) (and (<= .cse4 .cse0) .cse2 .cse3 (<= .cse0 .cse4))) (let ((.cse5 (+ main_~i~0 6))) (and .cse2 .cse3 (<= .cse5 .cse0) (<= .cse0 .cse5))) (let ((.cse6 (+ main_~i~0 10))) (and (= .cse6 .cse7) (<= .cse6 .cse0) .cse2 (<= .cse0 .cse6))) (let ((.cse8 (+ main_~i~0 3))) (and (<= .cse0 .cse8) (<= .cse8 .cse0) .cse2 .cse3)) (let ((.cse9 (+ main_~i~0 2))) (and (<= .cse9 .cse0) .cse2 .cse3 (<= .cse0 .cse9))) (let ((.cse10 (+ main_~i~0 4))) (and (<= .cse10 .cse0) (<= .cse0 .cse10) .cse2 .cse3)) (let ((.cse11 (+ main_~i~0 9))) (and (<= .cse11 .cse0) (<= .cse0 .cse11) .cse2 .cse3)) (let ((.cse12 (+ main_~i~0 7))) (and (<= .cse12 .cse0) .cse2 (<= .cse0 .cse12) .cse3)) (let ((.cse13 (+ main_~i~0 1))) (and (<= .cse13 .cse0) (<= .cse0 .cse13) .cse2 .cse3))))) [2020-10-23 20:41:36,885 INFO L270 CegarLoopResult]: At program point L40-1(line 40) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (.cse7 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4)))) (let ((.cse2 (= |main_~#array~0.offset| 0)) (.cse3 (= .cse0 .cse7))) (or (let ((.cse1 (+ main_~i~0 5))) (and (<= .cse0 .cse1) .cse2 (<= .cse1 .cse0) .cse3)) (let ((.cse4 (+ main_~i~0 8))) (and (<= .cse4 .cse0) .cse2 .cse3 (<= .cse0 .cse4))) (let ((.cse5 (+ main_~i~0 6))) (and .cse2 .cse3 (<= .cse5 .cse0) (<= .cse0 .cse5))) (let ((.cse6 (+ main_~i~0 10))) (and (= .cse6 .cse7) (<= .cse6 .cse0) .cse2 (<= .cse0 .cse6))) (let ((.cse8 (+ main_~i~0 3))) (and (<= .cse0 .cse8) (<= .cse8 .cse0) .cse2 .cse3)) (let ((.cse9 (+ main_~i~0 2))) (and (<= .cse9 .cse0) .cse2 .cse3 (<= .cse0 .cse9))) (let ((.cse10 (+ main_~i~0 4))) (and (<= .cse10 .cse0) (<= .cse0 .cse10) .cse2 .cse3)) (let ((.cse11 (+ main_~i~0 9))) (and (<= .cse11 .cse0) (<= .cse0 .cse11) .cse2 .cse3)) (let ((.cse12 (+ main_~i~0 7))) (and (<= .cse12 .cse0) .cse2 (<= .cse0 .cse12) .cse3)) (let ((.cse13 (+ main_~i~0 1))) (and (<= .cse13 .cse0) (<= .cse0 .cse13) .cse2 .cse3))))) [2020-10-23 20:41:36,886 INFO L270 CegarLoopResult]: At program point L40-2(line 40) the Hoare annotation is: (let ((.cse2 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (let ((.cse0 (= |main_~#array~0.offset| 0)) (.cse1 (= .cse2 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4))))) (or (and .cse0 .cse1 (<= main_~i~0 .cse2) (<= .cse2 (+ main_~i~0 8))) (let ((.cse3 (+ main_~i~0 9))) (and (<= .cse3 .cse2) (<= .cse2 .cse3) .cse0 .cse1))))) [2020-10-23 20:41:36,886 INFO L270 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|))) (and (= |main_#t~mem13.offset| .cse0) (< 0 (+ (* 8 main_~i~0) |main_~#array~0.offset| 1)) (= (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|) |main_#t~mem13.base|) (= |main_~#array~0.offset| 0) (= .cse0 (+ (* main_~i~0 8) |main_~#array~0.offset|)) (= |main_#t~mem13.base| |main_~#array~0.base|))) [2020-10-23 20:41:36,886 INFO L270 CegarLoopResult]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse1 (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (.cse2 (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (.cse0 (+ (* main_~i~0 8) |main_~#array~0.offset|))) (and (= |main_#t~mem13.offset| .cse0) (= .cse1 main_~pa~0.base) (= .cse1 |main_#t~mem13.base|) (= |main_~#array~0.offset| 0) (= .cse2 .cse0) (= (+ .cse2 4) main_~pa~0.offset) (or (< 1 main_~i~0) (= .cse0 0) (= 12 main_~pa~0.offset)) (= |main_~#array~0.base| main_~pa~0.base))) [2020-10-23 20:41:36,886 INFO L277 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-10-23 20:41:36,886 INFO L277 CegarLoopResult]: At program point L24-1(line 24) the Hoare annotation is: true [2020-10-23 20:41:36,886 INFO L277 CegarLoopResult]: At program point L24-2(line 24) the Hoare annotation is: true [2020-10-23 20:41:36,886 INFO L270 CegarLoopResult]: At program point L24-3(line 24) the Hoare annotation is: false [2020-10-23 20:41:36,886 INFO L270 CegarLoopResult]: At program point L24-4(line 24) the Hoare annotation is: false [2020-10-23 20:41:36,886 INFO L270 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (+ (* main_~i~0 8) |main_~#array~0.offset|)) (.cse1 (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|))) (and (= (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|) main_~pa~0.base) (= |main_~#array~0.offset| 0) (or (= .cse0 0) (< 11 main_~pa~0.offset)) (= .cse1 .cse0) (= (+ .cse1 4) main_~pa~0.offset) (= |main_~#array~0.base| main_~pa~0.base))) [2020-10-23 20:41:36,887 INFO L270 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse0 (+ (* main_~i~0 8) |main_~#array~0.offset|))) (and (= (+ |main_#t~mem14.offset| 4) main_~pa~0.offset) (= .cse0 |main_#t~mem14.offset|) (= |main_#t~mem14.base| main_~pa~0.base) (= (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|) main_~pa~0.base) (= |main_~#array~0.offset| 0) (or (= .cse0 0) (< 11 main_~pa~0.offset)) (= (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) .cse0) (= |main_~#array~0.base| main_~pa~0.base))) [2020-10-23 20:41:36,887 INFO L270 CegarLoopResult]: At program point L37-2(lines 37 45) the Hoare annotation is: (let ((.cse0 (+ (* main_~i~0 8) |main_~#array~0.offset|))) (and (= (+ |main_#t~mem14.offset| 4) main_~pa~0.offset) (= .cse0 |main_#t~mem14.offset|) (= |main_#t~mem14.base| main_~pa~0.base) (= (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|) main_~pa~0.base) (= |main_~#array~0.offset| 0) (or (= .cse0 0) (< 11 main_~pa~0.offset)) (= (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) .cse0) (= |main_~#array~0.base| main_~pa~0.base))) [2020-10-23 20:41:36,887 INFO L270 CegarLoopResult]: At program point L37-3(line 37) the Hoare annotation is: (let ((.cse0 (+ (* main_~i~0 8) |main_~#array~0.offset|))) (and (= (+ |main_#t~mem14.offset| 4) main_~pa~0.offset) (= .cse0 |main_#t~mem14.offset|) (= |main_#t~mem14.base| main_~pa~0.base) (= (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|) main_~pa~0.base) (= |main_~#array~0.offset| 0) (or (= .cse0 0) (< 11 main_~pa~0.offset)) (= (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) .cse0) (= |main_~#array~0.base| main_~pa~0.base))) [2020-10-23 20:41:36,887 INFO L270 CegarLoopResult]: At program point L37-4(line 37) the Hoare annotation is: (let ((.cse0 (+ (* main_~i~0 8) |main_~#array~0.offset|))) (and (= (+ |main_#t~mem14.offset| 4) main_~pa~0.offset) (= .cse0 |main_#t~mem14.offset|) (= |main_#t~mem14.base| main_~pa~0.base) (= (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|) main_~pa~0.base) (= |main_~#array~0.offset| 0) (or (= .cse0 0) (< 11 main_~pa~0.offset)) (= (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) .cse0) (= |main_~#array~0.base| main_~pa~0.base))) [2020-10-23 20:41:36,887 INFO L277 CegarLoopResult]: At program point L37-6(line 37) the Hoare annotation is: true [2020-10-23 20:41:36,887 INFO L277 CegarLoopResult]: At program point L37-7(line 37) the Hoare annotation is: true [2020-10-23 20:41:36,887 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (= |main_~#array~0.offset| 0) [2020-10-23 20:41:36,887 INFO L270 CegarLoopResult]: At program point L29-3(lines 29 32) the Hoare annotation is: (and (= |main_~#array~0.offset| 0) (<= main_~j~0 9)) [2020-10-23 20:41:36,887 INFO L270 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (= |main_~#array~0.offset| 0) [2020-10-23 20:41:36,887 INFO L270 CegarLoopResult]: At program point L29-4(line 29) the Hoare annotation is: (and (= |main_~#array~0.offset| 0) (<= main_~j~0 9)) [2020-10-23 20:41:36,888 INFO L270 CegarLoopResult]: At program point L29-5(line 29) the Hoare annotation is: (= |main_~#array~0.offset| 0) [2020-10-23 20:41:36,888 INFO L277 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: true [2020-10-23 20:41:36,888 INFO L270 CegarLoopResult]: At program point L29-6(lines 29 32) the Hoare annotation is: (= |main_~#array~0.offset| 0) [2020-10-23 20:41:36,888 INFO L277 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: true [2020-10-23 20:41:36,888 INFO L270 CegarLoopResult]: At program point L29-7(lines 23 52) the Hoare annotation is: (= |main_~#array~0.offset| 0) [2020-10-23 20:41:36,888 INFO L270 CegarLoopResult]: At program point L25-3(line 25) the Hoare annotation is: false [2020-10-23 20:41:36,888 INFO L270 CegarLoopResult]: At program point L25-4(line 25) the Hoare annotation is: false [2020-10-23 20:41:36,888 INFO L270 CegarLoopResult]: At program point L50(line 50) the Hoare annotation is: false [2020-10-23 20:41:36,888 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 22 52) the Hoare annotation is: true [2020-10-23 20:41:36,888 INFO L270 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (and (= main_~i~0 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4))) (<= 1 |main_#t~ret19|) (= |main_~#array~0.offset| 0) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) [2020-10-23 20:41:36,889 INFO L270 CegarLoopResult]: At program point L42-1(lines 42 44) the Hoare annotation is: (and (= main_~i~0 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4))) (<= 1 |main_#t~ret19|) (= |main_~#array~0.offset| 0) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) [2020-10-23 20:41:36,889 INFO L270 CegarLoopResult]: At program point L42-2(line 42) the Hoare annotation is: false [2020-10-23 20:41:36,889 INFO L277 CegarLoopResult]: At program point L42-3(line 42) the Hoare annotation is: true [2020-10-23 20:41:36,889 INFO L270 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (+ (* main_~i~0 8) |main_~#array~0.offset|)) (.cse1 (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|))) (and (= (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|) main_~pa~0.base) (= |main_~#array~0.offset| 0) (or (= .cse0 0) (< 11 main_~pa~0.offset)) (= .cse1 .cse0) (= (+ .cse1 4) main_~pa~0.offset) (= |main_~#array~0.base| main_~pa~0.base))) [2020-10-23 20:41:36,889 INFO L270 CegarLoopResult]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse1 (+ (* main_~i~0 8) |main_~#array~0.offset|)) (.cse2 (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|) main_~pa~0.base) (= |main_~#array~0.offset| 0) (<= |main_#t~mem16| .cse0) (or (= .cse1 0) (< 11 main_~pa~0.offset)) (= .cse2 .cse1) (= (+ .cse2 4) main_~pa~0.offset) (<= .cse0 |main_#t~mem16|) (= |main_~#array~0.base| main_~pa~0.base))) [2020-10-23 20:41:36,889 INFO L270 CegarLoopResult]: At program point L38-2(line 38) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 10)) (.cse1 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= .cse0 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4))) (<= .cse0 .cse1) (= |main_~#array~0.offset| 0) (<= |main_#t~mem16| .cse1) (<= .cse1 .cse0) (<= .cse1 |main_#t~mem16|))) [2020-10-23 20:41:36,889 INFO L277 CegarLoopResult]: At program point L34(lines 34 46) the Hoare annotation is: true [2020-10-23 20:41:36,889 INFO L270 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (= |main_~#array~0.offset| 0) (<= main_~j~0 9)) [2020-10-23 20:41:36,889 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 22 52) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-23 20:41:36,889 INFO L270 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (and (= |main_~#array~0.offset| 0) (<= main_~j~0 9)) [2020-10-23 20:41:36,890 INFO L270 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: (and (= |main_~#array~0.offset| 0) (<= main_~j~0 9)) [2020-10-23 20:41:36,890 INFO L270 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (= |main_~#array~0.offset| 0) [2020-10-23 20:41:36,890 INFO L270 CegarLoopResult]: At program point L51(line 51) the Hoare annotation is: false [2020-10-23 20:41:36,890 INFO L270 CegarLoopResult]: At program point L43(lines 23 52) the Hoare annotation is: false [2020-10-23 20:41:36,890 INFO L270 CegarLoopResult]: At program point L39-1(lines 39 41) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (let ((.cse15 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4))) (.cse7 (<= |main_#t~mem17| .cse0)) (.cse12 (+ main_~i~0 7)) (.cse3 (+ main_~i~0 5)) (.cse8 (+ main_~i~0 1))) (let ((.cse6 (<= .cse8 |main_#t~mem17|)) (.cse4 (<= .cse3 |main_#t~mem17|)) (.cse13 (or .cse7 (and (<= .cse12 .cse0) (<= main_~pa~0.offset 4) (< 3 main_~pa~0.offset)))) (.cse2 (= .cse0 .cse15)) (.cse1 (= |main_~#array~0.offset| 0))) (or (and (<= main_~i~0 |main_#t~mem17|) (<= .cse0 main_~i~0) .cse1 (<= |main_#t~mem17| main_~i~0) .cse2 (<= main_~i~0 .cse0)) (and (<= .cse0 .cse3) .cse4 .cse1 (<= .cse3 .cse0) .cse2) (let ((.cse5 (+ main_~i~0 2))) (and (<= .cse5 .cse0) .cse6 .cse1 .cse2 (<= .cse0 .cse5))) (and .cse7 (<= .cse0 .cse8) .cse6 .cse1 .cse2) (let ((.cse9 (+ main_~i~0 4))) (and (<= .cse9 |main_#t~mem17|) (<= .cse9 .cse0) (<= .cse0 .cse9) .cse1 .cse2)) (let ((.cse10 (+ main_~i~0 6))) (and .cse4 .cse1 .cse2 (<= .cse10 .cse0) (<= .cse0 .cse10))) (let ((.cse11 (+ main_~i~0 3))) (and (<= .cse11 |main_#t~mem17|) (<= .cse0 .cse11) (<= .cse11 .cse0) .cse1 .cse2)) (and (<= .cse12 |main_#t~mem17|) .cse13 .cse1 (<= .cse0 .cse12) .cse2) (and (<= (+ main_~i~0 8) |main_#t~mem17|) .cse13 (<= .cse0 (+ main_~i~0 9)) .cse1 .cse2) (let ((.cse14 (+ main_~i~0 10))) (and (= .cse14 .cse15) (= |main_#t~mem17| .cse0) (<= .cse14 .cse0) .cse1 (<= .cse0 .cse14))))))) [2020-10-23 20:41:36,890 INFO L270 CegarLoopResult]: At program point L39-2(line 39) the Hoare annotation is: (and (= main_~i~0 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4))) (<= main_~i~0 |main_#t~mem17|) (= |main_~#array~0.offset| 0) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) [2020-10-23 20:41:36,891 INFO L270 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (< 0 (+ (* 8 main_~i~0) |main_~#array~0.offset| 1)) (= |main_~#array~0.offset| 0)) [2020-10-23 20:41:36,891 INFO L270 CegarLoopResult]: At program point L39-4(line 39) the Hoare annotation is: (let ((.cse5 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (let ((.cse17 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4))) (.cse13 (<= |main_#t~mem17| .cse5)) (.cse6 (+ main_~i~0 7)) (.cse15 (+ main_~i~0 5))) (let ((.cse3 (<= .cse15 |main_#t~mem17|)) (.cse9 (+ main_~i~0 3)) (.cse11 (+ main_~i~0 8)) (.cse2 (or .cse13 (and (<= .cse6 .cse5) (<= main_~pa~0.offset 4) (< 3 main_~pa~0.offset)))) (.cse0 (or (= |main_#t~mem17| .cse17) (< main_~i~0 |main_#t~mem17|))) (.cse10 (+ main_~i~0 4)) (.cse1 (<= main_~i~0 |main_#t~mem17|)) (.cse7 (= .cse5 .cse17)) (.cse4 (= |main_~#array~0.offset| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= .cse5 .cse6) .cse7) (let ((.cse8 (+ main_~i~0 6))) (and .cse0 .cse1 .cse3 .cse4 .cse7 (<= .cse8 .cse5) (<= .cse5 .cse8))) (and .cse0 .cse1 (<= .cse9 |main_#t~mem17|) (<= .cse10 .cse5) (<= .cse5 .cse10) .cse4 .cse7) (and .cse0 .cse1 (<= .cse6 |main_#t~mem17|) .cse2 .cse4 .cse7 (<= .cse5 .cse11)) (let ((.cse12 (+ main_~i~0 2))) (and .cse0 .cse1 (<= .cse12 .cse5) .cse4 .cse7 (<= .cse5 .cse12))) (and .cse0 .cse1 .cse4 (<= .cse5 .cse9) (<= .cse9 .cse5) .cse7) (let ((.cse14 (+ main_~i~0 1))) (and .cse0 .cse1 .cse13 (<= .cse5 .cse14) (<= .cse14 |main_#t~mem17|) .cse4 .cse7)) (and (<= .cse11 |main_#t~mem17|) .cse2 (<= .cse5 (+ main_~i~0 9)) .cse4 .cse7) (and .cse0 (<= .cse5 .cse15) (<= .cse10 |main_#t~mem17|) .cse1 .cse4 (<= .cse15 .cse5) .cse7) (let ((.cse16 (+ main_~i~0 10))) (and (= .cse16 .cse17) (= |main_#t~mem17| .cse5) (<= .cse16 .cse5) .cse4 (<= .cse5 .cse16))))))) [2020-10-23 20:41:36,891 INFO L270 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: (and (= (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|) |main_~#array~0.base|) (< 0 (+ (* 8 main_~i~0) |main_~#array~0.offset| 1)) (= |main_~#array~0.offset| 0) (= (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) (+ (* main_~i~0 8) |main_~#array~0.offset|))) [2020-10-23 20:41:36,891 INFO L270 CegarLoopResult]: At program point L39-5(lines 39 41) the Hoare annotation is: (let ((.cse2 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (.cse1 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4)))) (let ((.cse3 (= |main_~#array~0.offset| 0)) (.cse4 (= .cse2 .cse1))) (or (let ((.cse0 (+ main_~i~0 10))) (and (= .cse0 .cse1) (<= .cse0 .cse2) .cse3 (<= .cse2 .cse0))) (and .cse3 .cse4 (<= main_~i~0 .cse2) (<= .cse2 (+ main_~i~0 8))) (let ((.cse5 (+ main_~i~0 9))) (and (<= .cse5 .cse2) (<= .cse2 .cse5) .cse3 .cse4))))) [2020-10-23 20:41:36,891 INFO L270 CegarLoopResult]: At program point L17(lines 17 20) the Hoare annotation is: (and (= check_~pc.offset |check_#in~pc.offset|) (= check_~pc.base |check_#in~pc.base|)) [2020-10-23 20:41:36,891 INFO L270 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: (let ((.cse1 (select (select |#memory_$Pointer$.base| |check_#in~pc.base|) |check_#in~pc.offset|)) (.cse0 (select (select |#memory_$Pointer$.offset| |check_#in~pc.base|) |check_#in~pc.offset|))) (and (= |check_#t~mem7.offset| .cse0) (= |check_#in~i| check_~i) (= .cse1 |check_#t~mem7.base|) (= check_~pc.offset |check_#in~pc.offset|) (= (select (select |#memory_int| .cse1) (+ .cse0 4)) |check_#t~mem8|) (= check_~pc.base |check_#in~pc.base|))) [2020-10-23 20:41:36,892 INFO L270 CegarLoopResult]: At program point L19-3(line 19) the Hoare annotation is: (let ((.cse1 (select (select |#memory_$Pointer$.base| |check_#in~pc.base|) |check_#in~pc.offset|)) (.cse0 (select (select |#memory_$Pointer$.offset| |check_#in~pc.base|) |check_#in~pc.offset|))) (let ((.cse2 (select (select |#memory_int| .cse1) (+ .cse0 4)))) (and (= |check_#t~mem7.offset| .cse0) (= |check_#in~i| check_~i) (= .cse1 |check_#t~mem7.base|) (= check_~pc.offset |check_#in~pc.offset|) (= .cse2 |check_#t~mem8|) (= check_~pc.base |check_#in~pc.base|) (or (not (= .cse2 |check_#in~i|)) (<= 1 |check_#res|))))) [2020-10-23 20:41:36,892 INFO L277 CegarLoopResult]: At program point checkENTRY(lines 17 20) the Hoare annotation is: true [2020-10-23 20:41:36,892 INFO L270 CegarLoopResult]: At program point L19-4(line 19) the Hoare annotation is: (let ((.cse1 (select (select |#memory_$Pointer$.base| |check_#in~pc.base|) |check_#in~pc.offset|)) (.cse0 (select (select |#memory_$Pointer$.offset| |check_#in~pc.base|) |check_#in~pc.offset|))) (and (= |check_#t~mem7.offset| .cse0) (= |check_#in~i| check_~i) (= .cse1 |check_#t~mem7.base|) (= check_~pc.offset |check_#in~pc.offset|) (= check_~pc.base |check_#in~pc.base|) (or (not (= (select (select |#memory_int| .cse1) (+ .cse0 4)) |check_#in~i|)) (<= 1 |check_#res|)))) [2020-10-23 20:41:36,892 INFO L270 CegarLoopResult]: At program point checkFINAL(lines 17 20) the Hoare annotation is: (and (= |check_#in~i| check_~i) (= check_~pc.offset |check_#in~pc.offset|) (= check_~pc.base |check_#in~pc.base|) (or (not (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |check_#in~pc.base|) |check_#in~pc.offset|)) (+ (select (select |#memory_$Pointer$.offset| |check_#in~pc.base|) |check_#in~pc.offset|) 4)) |check_#in~i|)) (<= 1 |check_#res|))) [2020-10-23 20:41:36,892 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (= |check_#in~i| check_~i) (= check_~pc.offset |check_#in~pc.offset|) (= check_~pc.base |check_#in~pc.base|)) [2020-10-23 20:41:36,892 INFO L270 CegarLoopResult]: At program point checkEXIT(lines 17 20) the Hoare annotation is: (and (= |check_#in~i| check_~i) (= check_~pc.offset |check_#in~pc.offset|) (= check_~pc.base |check_#in~pc.base|) (or (not (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |check_#in~pc.base|) |check_#in~pc.offset|)) (+ (select (select |#memory_$Pointer$.offset| |check_#in~pc.base|) |check_#in~pc.offset|) 4)) |check_#in~i|)) (<= 1 |check_#res|))) [2020-10-23 20:41:36,892 INFO L270 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (and (= |check_#t~mem7.offset| (select (select |#memory_$Pointer$.offset| |check_#in~pc.base|) |check_#in~pc.offset|)) (= |check_#in~i| check_~i) (= (select (select |#memory_$Pointer$.base| |check_#in~pc.base|) |check_#in~pc.offset|) |check_#t~mem7.base|) (= check_~pc.offset |check_#in~pc.offset|) (= check_~pc.base |check_#in~pc.base|)) [2020-10-23 20:41:36,908 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-23 20:41:36,909 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-23 20:41:36,909 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-23 20:41:36,910 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-23 20:41:36,910 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-23 20:41:36,910 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-23 20:41:36,910 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,912 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,912 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,912 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,913 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,913 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,913 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,913 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,913 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,914 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,914 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,914 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,914 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,914 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,914 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,915 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,915 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,917 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-23 20:41:36,917 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-23 20:41:36,918 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-23 20:41:36,919 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-23 20:41:36,920 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-23 20:41:36,920 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-23 20:41:36,920 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,921 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,921 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,921 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,921 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,921 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,921 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,922 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,922 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,922 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,922 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,922 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,922 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,923 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,923 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,923 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,923 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,926 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-23 20:41:36,926 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-23 20:41:36,926 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,927 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,927 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:41:36 BoogieIcfgContainer [2020-10-23 20:41:36,929 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:41:36,931 INFO L168 Benchmark]: Toolchain (without parser) took 382545.29 ms. Allocated memory was 151.0 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 108.6 MB in the beginning and 492.8 MB in the end (delta: -384.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. [2020-10-23 20:41:36,931 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.3 MB in the end (delta: 77.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:41:36,931 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.06 ms. Allocated memory is still 151.0 MB. Free memory was 135.3 MB in the beginning and 125.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:41:36,932 INFO L168 Benchmark]: Boogie Preprocessor took 84.73 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 134.0 MB in the end (delta: -8.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:41:36,932 INFO L168 Benchmark]: RCFGBuilder took 858.98 ms. Allocated memory is still 151.0 MB. Free memory was 134.0 MB in the beginning and 112.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:41:36,932 INFO L168 Benchmark]: TraceAbstraction took 381265.38 ms. Allocated memory was 151.0 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 112.0 MB in the beginning and 492.8 MB in the end (delta: -380.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. [2020-10-23 20:41:36,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.3 MB in the end (delta: 77.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 305.06 ms. Allocated memory is still 151.0 MB. Free memory was 135.3 MB in the beginning and 125.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 84.73 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 134.0 MB in the end (delta: -8.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 858.98 ms. Allocated memory is still 151.0 MB. Free memory was 134.0 MB in the beginning and 112.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 381265.38 ms. Allocated memory was 151.0 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 112.0 MB in the beginning and 492.8 MB in the end (delta: -380.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: array == 0 - InvariantResult [Line: 39]: Loop Invariant [2020-10-23 20:41:36,937 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-23 20:41:36,938 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-23 20:41:36,938 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-23 20:41:36,938 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-23 20:41:36,938 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-23 20:41:36,939 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-23 20:41:36,939 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,939 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,939 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,939 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,940 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,940 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,940 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,940 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,940 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,940 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,940 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,941 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,941 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,941 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,941 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,941 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,941 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,942 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-23 20:41:36,942 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-23 20:41:36,943 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-23 20:41:36,943 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-23 20:41:36,943 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-23 20:41:36,943 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-23 20:41:36,944 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,944 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,944 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,944 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,944 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,944 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,944 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,945 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,945 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,945 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,945 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,945 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,945 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,946 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,946 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,946 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,946 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived loop invariant: ((((i + 10 == unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][#memory_$Pointer$[cont][cont] + 4] && i + 10 <= unknown-#memory_int-unknown[pa][pa]) && array == 0) && unknown-#memory_int-unknown[pa][pa] <= i + 10) || (((array == 0 && unknown-#memory_int-unknown[pa][pa] == unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][#memory_$Pointer$[cont][cont] + 4]) && i <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[pa][pa] <= i + 8)) || (((i + 9 <= unknown-#memory_int-unknown[pa][pa] && unknown-#memory_int-unknown[pa][pa] <= i + 9) && array == 0) && unknown-#memory_int-unknown[pa][pa] == unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][#memory_$Pointer$[cont][cont] + 4]) - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for check [2020-10-23 20:41:36,947 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-23 20:41:36,947 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-23 20:41:36,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,948 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,948 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,948 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-23 20:41:36,948 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-23 20:41:36,949 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:41:36,949 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-23 20:41:36,949 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived contract for procedure check: ((\old(i) == i && pc == pc) && pc == pc) && (!(unknown-#memory_int-unknown[#memory_$Pointer$[pc][pc]][#memory_$Pointer$[pc][pc] + 4] == \old(i)) || 1 <= \result) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 371.5s, OverallIterations: 21, TraceHistogramMax: 12, AutomataDifference: 97.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 9.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1619 SDtfs, 1903 SDslu, 25001 SDs, 0 SdLazy, 27360 SolverSat, 372 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 32.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1140 GetRequests, 115 SyntacticMatches, 8 SemanticMatches, 1017 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15125 ImplicationChecksByTransitivity, 189.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 21 MinimizatonAttempts, 102 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 86 LocationsWithAnnotation, 346 PreInvPairs, 530 NumberOfFragments, 3367 HoareAnnotationTreeSize, 346 FomulaSimplifications, 109347 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 86 FomulaSimplificationsInter, 16819 FormulaSimplificationTreeSizeReductionInter, 8.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...