/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Ackermann03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 21:59:25,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:59:25,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:59:25,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 21:59:25,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 21:59:25,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 21:59:25,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 21:59:25,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 21:59:25,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 21:59:25,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 21:59:25,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 21:59:25,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-11-06 21:59:25,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:59:25,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:59:25,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:59:25,228 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 21:59:25,286 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:59:25,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:59:25,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:59:25,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:59:25,291 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:59:25,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:59:25,292 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:59:25,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:59:25,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:59:25,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:59:25,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:59:25,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:59:25,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:59:25,294 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:59:25,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:59:25,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:59:25,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:59:25,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:59:25,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:59:25,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:59:25,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:59:25,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:59:25,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:59:25,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:59:25,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:59:25,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:59:25,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:59:25,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:59:25,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:59:25,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:59:25,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:59:25,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:59:25,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:59:25,751 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:59:25,752 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:59:25,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann03.c [2020-11-06 21:59:25,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/508a59b71/5549571cadb549db9d153fde65714fe7/FLAG16eea2b0f [2020-11-06 21:59:26,369 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:59:26,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Ackermann03.c [2020-11-06 21:59:26,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/508a59b71/5549571cadb549db9d153fde65714fe7/FLAG16eea2b0f [2020-11-06 21:59:26,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/508a59b71/5549571cadb549db9d153fde65714fe7 [2020-11-06 21:59:26,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:59:26,778 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:59:26,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:59:26,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:59:26,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:59:26,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:26" (1/1) ... [2020-11-06 21:59:26,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58333880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:26, skipping insertion in model container [2020-11-06 21:59:26,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:26" (1/1) ... [2020-11-06 21:59:26,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:59:26,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:59:27,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:59:27,042 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:59:27,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:59:27,076 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:59:27,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:27 WrapperNode [2020-11-06 21:59:27,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:59:27,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:59:27,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:59:27,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:59:27,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:27" (1/1) ... [2020-11-06 21:59:27,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:27" (1/1) ... [2020-11-06 21:59:27,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:27" (1/1) ... [2020-11-06 21:59:27,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:27" (1/1) ... [2020-11-06 21:59:27,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:27" (1/1) ... [2020-11-06 21:59:27,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:27" (1/1) ... [2020-11-06 21:59:27,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:27" (1/1) ... [2020-11-06 21:59:27,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:59:27,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:59:27,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:59:27,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:59:27,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:27" (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 [2020-11-06 21:59:27,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:59:27,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:59:27,198 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:59:27,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-11-06 21:59:27,199 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:59:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:59:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:59:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:59:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:59:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 21:59:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-11-06 21:59:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:59:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:59:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:59:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:59:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:59:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:59:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:59:27,637 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:59:27,638 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-06 21:59:27,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:27 BoogieIcfgContainer [2020-11-06 21:59:27,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:59:27,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:59:27,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:59:27,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:59:27,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:59:26" (1/3) ... [2020-11-06 21:59:27,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5e7648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:27, skipping insertion in model container [2020-11-06 21:59:27,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:27" (2/3) ... [2020-11-06 21:59:27,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5e7648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:27, skipping insertion in model container [2020-11-06 21:59:27,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:27" (3/3) ... [2020-11-06 21:59:27,649 INFO L111 eAbstractionObserver]: Analyzing ICFG Ackermann03.c [2020-11-06 21:59:27,665 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:59:27,668 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:59:27,682 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:59:27,713 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:59:27,713 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:59:27,713 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:59:27,714 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:59:27,714 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:59:27,714 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:59:27,714 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:59:27,714 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:59:27,732 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-06 21:59:27,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-06 21:59:27,738 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:59:27,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:59:27,739 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:59:27,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:59:27,746 INFO L82 PathProgramCache]: Analyzing trace with hash 192942640, now seen corresponding path program 1 times [2020-11-06 21:59:27,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:59:27,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712632499] [2020-11-06 21:59:27,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:59:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:28,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:59:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:28,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 21:59:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:28,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:59:28,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712632499] [2020-11-06 21:59:28,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:59:28,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 21:59:28,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740775508] [2020-11-06 21:59:28,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 21:59:28,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:59:28,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 21:59:28,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 21:59:28,175 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 6 states. [2020-11-06 21:59:28,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:59:28,934 INFO L93 Difference]: Finished difference Result 61 states and 84 transitions. [2020-11-06 21:59:28,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 21:59:28,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-06 21:59:28,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:59:28,946 INFO L225 Difference]: With dead ends: 61 [2020-11-06 21:59:28,946 INFO L226 Difference]: Without dead ends: 30 [2020-11-06 21:59:28,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-06 21:59:28,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-06 21:59:28,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-06 21:59:28,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-06 21:59:28,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-11-06 21:59:29,001 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 17 [2020-11-06 21:59:29,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:59:29,001 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-11-06 21:59:29,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 21:59:29,002 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-11-06 21:59:29,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-06 21:59:29,004 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:59:29,005 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:59:29,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:59:29,005 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:59:29,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:59:29,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1691639833, now seen corresponding path program 1 times [2020-11-06 21:59:29,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:59:29,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205020459] [2020-11-06 21:59:29,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:59:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:29,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:59:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:29,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 21:59:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:29,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 21:59:29,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205020459] [2020-11-06 21:59:29,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366924834] [2020-11-06 21:59:29,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:29,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 21:59:29,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:59:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 21:59:29,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 21:59:29,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-11-06 21:59:29,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140701631] [2020-11-06 21:59:29,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 21:59:29,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:59:29,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 21:59:29,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-06 21:59:29,516 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 9 states. [2020-11-06 21:59:29,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:59:29,931 INFO L93 Difference]: Finished difference Result 55 states and 80 transitions. [2020-11-06 21:59:29,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 21:59:29,935 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-11-06 21:59:29,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:59:29,938 INFO L225 Difference]: With dead ends: 55 [2020-11-06 21:59:29,940 INFO L226 Difference]: Without dead ends: 32 [2020-11-06 21:59:29,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-11-06 21:59:29,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-06 21:59:29,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-06 21:59:29,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-06 21:59:29,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2020-11-06 21:59:29,964 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 24 [2020-11-06 21:59:29,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:59:29,964 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-11-06 21:59:29,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 21:59:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2020-11-06 21:59:29,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-06 21:59:29,971 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:59:29,972 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-11-06 21:59:30,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-06 21:59:30,190 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:59:30,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:59:30,192 INFO L82 PathProgramCache]: Analyzing trace with hash 936683835, now seen corresponding path program 1 times [2020-11-06 21:59:30,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:59:30,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960549275] [2020-11-06 21:59:30,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:59:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:30,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:59:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:30,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 21:59:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:30,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:30,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:30,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-06 21:59:30,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960549275] [2020-11-06 21:59:30,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38459831] [2020-11-06 21:59:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:30,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-06 21:59:30,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:59:30,532 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-06 21:59:30,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 21:59:30,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-11-06 21:59:30,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137319089] [2020-11-06 21:59:30,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 21:59:30,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:59:30,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 21:59:30,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-06 21:59:30,535 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand 9 states. [2020-11-06 21:59:31,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:59:31,081 INFO L93 Difference]: Finished difference Result 80 states and 140 transitions. [2020-11-06 21:59:31,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 21:59:31,081 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-11-06 21:59:31,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:59:31,085 INFO L225 Difference]: With dead ends: 80 [2020-11-06 21:59:31,085 INFO L226 Difference]: Without dead ends: 55 [2020-11-06 21:59:31,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-11-06 21:59:31,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-06 21:59:31,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-06 21:59:31,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-06 21:59:31,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 81 transitions. [2020-11-06 21:59:31,109 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 81 transitions. Word has length 37 [2020-11-06 21:59:31,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:59:31,109 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 81 transitions. [2020-11-06 21:59:31,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 21:59:31,110 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 81 transitions. [2020-11-06 21:59:31,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-06 21:59:31,113 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:59:31,113 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 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] [2020-11-06 21:59:31,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:31,329 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:59:31,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:59:31,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1370575681, now seen corresponding path program 2 times [2020-11-06 21:59:31,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:59:31,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510113159] [2020-11-06 21:59:31,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:59:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:31,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:59:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:31,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 21:59:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:31,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:31,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:31,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:31,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:31,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-06 21:59:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-11-06 21:59:31,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510113159] [2020-11-06 21:59:31,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164339904] [2020-11-06 21:59:31,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:31,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 21:59:31,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 21:59:31,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-06 21:59:31,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:59:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-11-06 21:59:31,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 21:59:31,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-11-06 21:59:31,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755630043] [2020-11-06 21:59:31,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 21:59:31,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:59:31,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 21:59:31,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-06 21:59:31,804 INFO L87 Difference]: Start difference. First operand 55 states and 81 transitions. Second operand 9 states. [2020-11-06 21:59:32,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:59:32,381 INFO L93 Difference]: Finished difference Result 126 states and 233 transitions. [2020-11-06 21:59:32,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 21:59:32,382 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-11-06 21:59:32,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:59:32,387 INFO L225 Difference]: With dead ends: 126 [2020-11-06 21:59:32,387 INFO L226 Difference]: Without dead ends: 58 [2020-11-06 21:59:32,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-11-06 21:59:32,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-06 21:59:32,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-11-06 21:59:32,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-06 21:59:32,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 81 transitions. [2020-11-06 21:59:32,410 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 81 transitions. Word has length 50 [2020-11-06 21:59:32,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:59:32,411 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 81 transitions. [2020-11-06 21:59:32,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 21:59:32,411 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 81 transitions. [2020-11-06 21:59:32,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-11-06 21:59:32,417 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:59:32,417 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 11, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:59:32,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:32,632 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:59:32,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:59:32,633 INFO L82 PathProgramCache]: Analyzing trace with hash -69170412, now seen corresponding path program 3 times [2020-11-06 21:59:32,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:59:32,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766062807] [2020-11-06 21:59:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:59:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:32,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:59:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:32,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 21:59:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:32,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:32,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:32,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:33,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:33,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:33,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:33,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-06 21:59:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:33,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:33,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:33,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:33,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:33,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-11-06 21:59:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:33,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:33,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:33,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:33,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:33,273 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 148 proven. 218 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-11-06 21:59:33,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766062807] [2020-11-06 21:59:33,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053723154] [2020-11-06 21:59:33,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:33,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-11-06 21:59:33,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 21:59:33,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-06 21:59:33,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:59:33,514 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 196 proven. 31 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-11-06 21:59:33,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 21:59:33,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2020-11-06 21:59:33,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223159978] [2020-11-06 21:59:33,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-06 21:59:33,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:59:33,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-06 21:59:33,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-11-06 21:59:33,520 INFO L87 Difference]: Start difference. First operand 58 states and 81 transitions. Second operand 14 states. [2020-11-06 21:59:34,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:59:34,829 INFO L93 Difference]: Finished difference Result 144 states and 278 transitions. [2020-11-06 21:59:34,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-06 21:59:34,831 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 124 [2020-11-06 21:59:34,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:59:34,833 INFO L225 Difference]: With dead ends: 144 [2020-11-06 21:59:34,833 INFO L226 Difference]: Without dead ends: 65 [2020-11-06 21:59:34,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2020-11-06 21:59:34,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-06 21:59:34,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-11-06 21:59:34,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-06 21:59:34,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-11-06 21:59:34,869 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 124 [2020-11-06 21:59:34,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:59:34,870 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-11-06 21:59:34,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-06 21:59:34,870 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-11-06 21:59:34,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-06 21:59:34,872 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:59:34,873 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:59:35,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:35,083 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:59:35,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:59:35,084 INFO L82 PathProgramCache]: Analyzing trace with hash -687012994, now seen corresponding path program 4 times [2020-11-06 21:59:35,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:59:35,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043765719] [2020-11-06 21:59:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:59:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:35,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:59:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:35,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 21:59:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:35,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:35,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:35,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:35,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:35,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:35,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:35,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-06 21:59:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:35,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:35,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-11-06 21:59:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:35,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 101 proven. 59 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-11-06 21:59:35,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043765719] [2020-11-06 21:59:35,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644063260] [2020-11-06 21:59:35,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:35,527 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-06 21:59:35,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 21:59:35,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-06 21:59:35,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:59:35,634 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 141 proven. 37 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-11-06 21:59:35,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 21:59:35,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 18 [2020-11-06 21:59:35,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240746048] [2020-11-06 21:59:35,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-06 21:59:35,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:59:35,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-06 21:59:35,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-11-06 21:59:35,637 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 18 states. [2020-11-06 21:59:37,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:59:37,042 INFO L93 Difference]: Finished difference Result 114 states and 140 transitions. [2020-11-06 21:59:37,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-06 21:59:37,043 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 84 [2020-11-06 21:59:37,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:59:37,045 INFO L225 Difference]: With dead ends: 114 [2020-11-06 21:59:37,046 INFO L226 Difference]: Without dead ends: 75 [2020-11-06 21:59:37,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=271, Invalid=989, Unknown=0, NotChecked=0, Total=1260 [2020-11-06 21:59:37,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-06 21:59:37,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2020-11-06 21:59:37,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-06 21:59:37,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2020-11-06 21:59:37,073 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 84 [2020-11-06 21:59:37,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:59:37,073 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2020-11-06 21:59:37,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-06 21:59:37,073 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2020-11-06 21:59:37,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-06 21:59:37,079 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:59:37,081 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 11, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:59:37,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-06 21:59:37,282 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:59:37,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:59:37,283 INFO L82 PathProgramCache]: Analyzing trace with hash 707686796, now seen corresponding path program 5 times [2020-11-06 21:59:37,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:59:37,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641687776] [2020-11-06 21:59:37,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:59:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:59:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 21:59:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-06 21:59:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-11-06 21:59:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-06 21:59:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-06 21:59:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:37,839 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 126 proven. 271 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2020-11-06 21:59:37,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641687776] [2020-11-06 21:59:37,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640376293] [2020-11-06 21:59:37,840 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:37,912 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-06 21:59:37,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 21:59:37,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-06 21:59:37,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:59:38,034 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 484 proven. 71 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-11-06 21:59:38,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 21:59:38,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 18 [2020-11-06 21:59:38,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035172755] [2020-11-06 21:59:38,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-06 21:59:38,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:59:38,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-06 21:59:38,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-11-06 21:59:38,042 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand 18 states. [2020-11-06 21:59:39,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:59:39,901 INFO L93 Difference]: Finished difference Result 114 states and 137 transitions. [2020-11-06 21:59:39,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-06 21:59:39,901 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 136 [2020-11-06 21:59:39,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:59:39,903 INFO L225 Difference]: With dead ends: 114 [2020-11-06 21:59:39,903 INFO L226 Difference]: Without dead ends: 72 [2020-11-06 21:59:39,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=409, Invalid=1483, Unknown=0, NotChecked=0, Total=1892 [2020-11-06 21:59:39,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-06 21:59:39,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2020-11-06 21:59:39,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-06 21:59:39,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2020-11-06 21:59:39,917 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 136 [2020-11-06 21:59:39,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:59:39,917 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2020-11-06 21:59:39,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-06 21:59:39,917 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2020-11-06 21:59:39,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-06 21:59:39,919 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:59:39,919 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 11, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:59:40,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:40,134 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:59:40,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:59:40,135 INFO L82 PathProgramCache]: Analyzing trace with hash 44576270, now seen corresponding path program 6 times [2020-11-06 21:59:40,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:59:40,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978772192] [2020-11-06 21:59:40,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:59:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:59:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 21:59:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-06 21:59:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-06 21:59:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-06 21:59:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-06 21:59:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 153 proven. 289 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-11-06 21:59:40,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978772192] [2020-11-06 21:59:40,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172507619] [2020-11-06 21:59:40,652 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:40,770 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2020-11-06 21:59:40,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 21:59:40,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-06 21:59:40,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:59:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 475 proven. 114 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-11-06 21:59:40,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 21:59:40,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 19 [2020-11-06 21:59:40,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281673643] [2020-11-06 21:59:40,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-06 21:59:40,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:59:40,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-06 21:59:40,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-11-06 21:59:40,887 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand 19 states. [2020-11-06 21:59:42,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:59:42,969 INFO L93 Difference]: Finished difference Result 128 states and 157 transitions. [2020-11-06 21:59:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-06 21:59:42,970 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 136 [2020-11-06 21:59:42,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:59:42,974 INFO L225 Difference]: With dead ends: 128 [2020-11-06 21:59:42,974 INFO L226 Difference]: Without dead ends: 82 [2020-11-06 21:59:42,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=471, Invalid=1785, Unknown=0, NotChecked=0, Total=2256 [2020-11-06 21:59:42,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-06 21:59:42,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2020-11-06 21:59:42,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-06 21:59:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2020-11-06 21:59:42,995 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 136 [2020-11-06 21:59:42,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:59:42,995 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2020-11-06 21:59:42,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-06 21:59:42,996 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2020-11-06 21:59:42,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-11-06 21:59:42,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:59:42,998 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:59:43,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:43,205 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:59:43,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:59:43,206 INFO L82 PathProgramCache]: Analyzing trace with hash 817501940, now seen corresponding path program 7 times [2020-11-06 21:59:43,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:59:43,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255979440] [2020-11-06 21:59:43,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:59:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:59:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 21:59:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-06 21:59:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-06 21:59:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-06 21:59:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-06 21:59:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-06 21:59:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:43,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-06 21:59:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 446 proven. 274 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2020-11-06 21:59:44,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255979440] [2020-11-06 21:59:44,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662825535] [2020-11-06 21:59:44,040 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:44,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-06 21:59:44,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:59:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2020-11-06 21:59:44,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 21:59:44,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 25 [2020-11-06 21:59:44,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013651112] [2020-11-06 21:59:44,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-06 21:59:44,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:59:44,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-06 21:59:44,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2020-11-06 21:59:44,288 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand 25 states. [2020-11-06 21:59:47,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:59:47,152 INFO L93 Difference]: Finished difference Result 140 states and 174 transitions. [2020-11-06 21:59:47,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-06 21:59:47,152 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 162 [2020-11-06 21:59:47,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:59:47,154 INFO L225 Difference]: With dead ends: 140 [2020-11-06 21:59:47,154 INFO L226 Difference]: Without dead ends: 95 [2020-11-06 21:59:47,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=622, Invalid=2918, Unknown=0, NotChecked=0, Total=3540 [2020-11-06 21:59:47,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-11-06 21:59:47,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 79. [2020-11-06 21:59:47,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-11-06 21:59:47,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2020-11-06 21:59:47,171 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 162 [2020-11-06 21:59:47,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:59:47,172 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2020-11-06 21:59:47,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-06 21:59:47,172 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2020-11-06 21:59:47,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-11-06 21:59:47,176 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:59:47,176 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:59:47,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-06 21:59:47,392 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:59:47,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:59:47,393 INFO L82 PathProgramCache]: Analyzing trace with hash 282891340, now seen corresponding path program 8 times [2020-11-06 21:59:47,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:59:47,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134961553] [2020-11-06 21:59:47,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:59:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:59:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 21:59:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-06 21:59:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-06 21:59:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-06 21:59:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-06 21:59:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:47,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:48,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:48,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:48,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:48,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:48,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:48,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-06 21:59:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:48,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-06 21:59:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:48,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 21:59:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:48,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-06 21:59:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:48,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 600 proven. 156 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2020-11-06 21:59:48,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134961553] [2020-11-06 21:59:48,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563317830] [2020-11-06 21:59:48,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:48,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 21:59:48,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 21:59:48,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 79 conjunts are in the unsatisfiable core [2020-11-06 21:59:48,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:59:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 583 proven. 158 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2020-11-06 21:59:49,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 21:59:49,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23] total 26 [2020-11-06 21:59:49,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341494630] [2020-11-06 21:59:49,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-06 21:59:49,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:59:49,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-06 21:59:49,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=598, Unknown=0, NotChecked=0, Total=650 [2020-11-06 21:59:49,041 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand 26 states. [2020-11-06 21:59:52,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:59:52,896 INFO L93 Difference]: Finished difference Result 137 states and 180 transitions. [2020-11-06 21:59:52,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-06 21:59:52,896 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 188 [2020-11-06 21:59:52,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:59:52,899 INFO L225 Difference]: With dead ends: 137 [2020-11-06 21:59:52,899 INFO L226 Difference]: Without dead ends: 129 [2020-11-06 21:59:52,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 241 SyntacticMatches, 7 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=344, Invalid=3196, Unknown=0, NotChecked=0, Total=3540 [2020-11-06 21:59:52,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-11-06 21:59:52,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101. [2020-11-06 21:59:52,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-06 21:59:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 136 transitions. [2020-11-06 21:59:52,919 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 136 transitions. Word has length 188 [2020-11-06 21:59:52,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:59:52,920 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 136 transitions. [2020-11-06 21:59:52,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-11-06 21:59:52,920 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 136 transitions. [2020-11-06 21:59:52,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-11-06 21:59:52,923 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:59:52,923 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:59:53,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:53,137 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:59:53,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:59:53,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1916267924, now seen corresponding path program 9 times [2020-11-06 21:59:53,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:59:53,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622941238] [2020-11-06 21:59:53,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:59:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:59:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 21:59:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-06 21:59:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-06 21:59:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-06 21:59:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-06 21:59:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-06 21:59:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-06 21:59:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 21:59:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:53,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 503 proven. 360 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2020-11-06 21:59:53,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622941238] [2020-11-06 21:59:53,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120260504] [2020-11-06 21:59:53,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:54,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-11-06 21:59:54,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 21:59:54,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-06 21:59:54,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:59:54,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2020-11-06 21:59:54,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 21:59:54,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21] total 26 [2020-11-06 21:59:54,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312773730] [2020-11-06 21:59:54,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-06 21:59:54,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:59:54,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-06 21:59:54,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2020-11-06 21:59:54,159 INFO L87 Difference]: Start difference. First operand 101 states and 136 transitions. Second operand 26 states. [2020-11-06 21:59:57,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:59:57,356 INFO L93 Difference]: Finished difference Result 209 states and 283 transitions. [2020-11-06 21:59:57,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-06 21:59:57,360 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 175 [2020-11-06 21:59:57,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:59:57,362 INFO L225 Difference]: With dead ends: 209 [2020-11-06 21:59:57,362 INFO L226 Difference]: Without dead ends: 137 [2020-11-06 21:59:57,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=756, Invalid=3534, Unknown=0, NotChecked=0, Total=4290 [2020-11-06 21:59:57,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-06 21:59:57,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 98. [2020-11-06 21:59:57,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-06 21:59:57,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 129 transitions. [2020-11-06 21:59:57,380 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 129 transitions. Word has length 175 [2020-11-06 21:59:57,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:59:57,381 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 129 transitions. [2020-11-06 21:59:57,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-11-06 21:59:57,382 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 129 transitions. [2020-11-06 21:59:57,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-11-06 21:59:57,384 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:59:57,385 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 16, 13, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:59:57,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:57,600 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:59:57,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:59:57,601 INFO L82 PathProgramCache]: Analyzing trace with hash 986851092, now seen corresponding path program 10 times [2020-11-06 21:59:57,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:59:57,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265458386] [2020-11-06 21:59:57,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:59:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:57,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:59:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:57,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 21:59:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:57,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:57,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:57,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:57,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:57,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:57,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:57,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-06 21:59:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:57,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:57,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:57,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:57,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:58,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:58,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-06 21:59:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:58,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-06 21:59:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:58,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-06 21:59:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:58,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:58,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:58,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:58,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:58,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:58,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:58,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 21:59:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:58,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 21:59:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:58,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-06 21:59:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:58,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-06 21:59:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:58,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 21:59:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:58,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-06 21:59:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:58,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-06 21:59:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:58,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 665 proven. 517 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked. [2020-11-06 21:59:58,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265458386] [2020-11-06 21:59:58,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960471678] [2020-11-06 21:59:58,462 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 21:59:58,598 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-06 21:59:58,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 21:59:58,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 41 conjunts are in the unsatisfiable core [2020-11-06 21:59:58,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 21:59:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 647 proven. 519 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2020-11-06 21:59:58,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 21:59:58,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23] total 28 [2020-11-06 21:59:58,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345818635] [2020-11-06 21:59:58,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-06 21:59:58,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:59:58,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-06 21:59:58,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2020-11-06 21:59:58,769 INFO L87 Difference]: Start difference. First operand 98 states and 129 transitions. Second operand 28 states. [2020-11-06 22:00:00,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:00,973 INFO L93 Difference]: Finished difference Result 213 states and 276 transitions. [2020-11-06 22:00:00,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-06 22:00:00,973 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 201 [2020-11-06 22:00:00,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:00,976 INFO L225 Difference]: With dead ends: 213 [2020-11-06 22:00:00,976 INFO L226 Difference]: Without dead ends: 139 [2020-11-06 22:00:00,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=551, Invalid=2529, Unknown=0, NotChecked=0, Total=3080 [2020-11-06 22:00:00,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-06 22:00:00,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 103. [2020-11-06 22:00:00,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-06 22:00:00,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 134 transitions. [2020-11-06 22:00:00,994 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 134 transitions. Word has length 201 [2020-11-06 22:00:00,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:00,995 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 134 transitions. [2020-11-06 22:00:00,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-06 22:00:00,995 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 134 transitions. [2020-11-06 22:00:00,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-11-06 22:00:00,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:00,998 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 17, 14, 13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:01,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-06 22:00:01,213 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:01,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:01,213 INFO L82 PathProgramCache]: Analyzing trace with hash 2018166470, now seen corresponding path program 11 times [2020-11-06 22:00:01,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:01,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372060702] [2020-11-06 22:00:01,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:00:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 22:00:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-06 22:00:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 22:00:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-06 22:00:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-06 22:00:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:00:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-11-06 22:00:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 22:00:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-06 22:00:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-06 22:00:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:00:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-06 22:00:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-06 22:00:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:01,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 268 proven. 783 refuted. 0 times theorem prover too weak. 1269 trivial. 0 not checked. [2020-11-06 22:00:01,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372060702] [2020-11-06 22:00:01,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509557463] [2020-11-06 22:00:01,907 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:00:02,009 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-06 22:00:02,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:00:02,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 45 conjunts are in the unsatisfiable core [2020-11-06 22:00:02,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:00:02,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 1296 proven. 226 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2020-11-06 22:00:02,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:00:02,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 31 [2020-11-06 22:00:02,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469435479] [2020-11-06 22:00:02,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-06 22:00:02,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:00:02,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-06 22:00:02,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=828, Unknown=0, NotChecked=0, Total=930 [2020-11-06 22:00:02,468 INFO L87 Difference]: Start difference. First operand 103 states and 134 transitions. Second operand 31 states. [2020-11-06 22:00:04,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:04,892 INFO L93 Difference]: Finished difference Result 201 states and 273 transitions. [2020-11-06 22:00:04,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-06 22:00:04,893 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 214 [2020-11-06 22:00:04,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:04,896 INFO L225 Difference]: With dead ends: 201 [2020-11-06 22:00:04,896 INFO L226 Difference]: Without dead ends: 129 [2020-11-06 22:00:04,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=530, Invalid=3010, Unknown=0, NotChecked=0, Total=3540 [2020-11-06 22:00:04,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-11-06 22:00:04,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 118. [2020-11-06 22:00:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-11-06 22:00:04,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2020-11-06 22:00:04,918 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 141 transitions. Word has length 214 [2020-11-06 22:00:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:04,919 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 141 transitions. [2020-11-06 22:00:04,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-11-06 22:00:04,919 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 141 transitions. [2020-11-06 22:00:04,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-11-06 22:00:04,922 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:04,923 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 24, 20, 19, 19, 19, 19, 19, 19, 19, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:05,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-06 22:00:05,136 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:05,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:05,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1036336941, now seen corresponding path program 12 times [2020-11-06 22:00:05,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:05,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124676276] [2020-11-06 22:00:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:00:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 22:00:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-06 22:00:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 22:00:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-06 22:00:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-06 22:00:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-06 22:00:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 22:00:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-06 22:00:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-06 22:00:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:00:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-06 22:00:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-11-06 22:00:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-06 22:00:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-06 22:00:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-06 22:00:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-06 22:00:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-06 22:00:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-06 22:00:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:05,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 22:00:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4764 backedges. 233 proven. 548 refuted. 0 times theorem prover too weak. 3983 trivial. 0 not checked. [2020-11-06 22:00:06,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124676276] [2020-11-06 22:00:06,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119454024] [2020-11-06 22:00:06,036 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:00:06,286 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2020-11-06 22:00:06,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:00:06,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-06 22:00:06,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:00:06,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4764 backedges. 215 proven. 426 refuted. 0 times theorem prover too weak. 4123 trivial. 0 not checked. [2020-11-06 22:00:06,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:00:06,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2020-11-06 22:00:06,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709194347] [2020-11-06 22:00:06,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-06 22:00:06,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:00:06,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-06 22:00:06,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-11-06 22:00:06,441 INFO L87 Difference]: Start difference. First operand 118 states and 141 transitions. Second operand 13 states. [2020-11-06 22:00:07,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:07,163 INFO L93 Difference]: Finished difference Result 121 states and 144 transitions. [2020-11-06 22:00:07,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-06 22:00:07,167 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 299 [2020-11-06 22:00:07,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:07,169 INFO L225 Difference]: With dead ends: 121 [2020-11-06 22:00:07,169 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:00:07,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-11-06 22:00:07,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:00:07,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:00:07,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:00:07,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:00:07,171 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 299 [2020-11-06 22:00:07,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:07,171 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:00:07,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-06 22:00:07,171 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:00:07,171 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:00:07,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-06 22:00:07,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:00:07,949 WARN L194 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 104 [2020-11-06 22:00:08,091 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 108 [2020-11-06 22:00:08,321 WARN L194 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 113 [2020-11-06 22:00:08,483 WARN L194 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 116 [2020-11-06 22:00:08,621 WARN L194 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 113 [2020-11-06 22:00:08,899 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 100 [2020-11-06 22:00:09,055 WARN L194 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 104 [2020-11-06 22:00:09,307 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 109 [2020-11-06 22:00:09,430 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 108 [2020-11-06 22:00:10,262 WARN L194 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 17 [2020-11-06 22:00:12,676 WARN L194 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 207 DAG size of output: 65 [2020-11-06 22:00:13,000 WARN L194 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 9 [2020-11-06 22:00:13,134 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 1 [2020-11-06 22:00:13,140 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-11-06 22:00:13,140 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-06 22:00:13,141 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-11-06 22:00:13,141 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-06 22:00:13,141 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:00:13,141 INFO L262 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|)) [2020-11-06 22:00:13,141 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:00:13,141 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:00:13,141 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:00:13,142 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:00:13,142 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:00:13,142 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 27 47) the Hoare annotation is: true [2020-11-06 22:00:13,142 INFO L266 CegarLoopResult]: For program point L29(lines 29 33) no Hoare annotation was computed. [2020-11-06 22:00:13,142 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 27 47) no Hoare annotation was computed. [2020-11-06 22:00:13,142 INFO L262 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: false [2020-11-06 22:00:13,142 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 27 47) no Hoare annotation was computed. [2020-11-06 22:00:13,142 INFO L266 CegarLoopResult]: For program point L45-1(line 45) no Hoare annotation was computed. [2020-11-06 22:00:13,142 INFO L266 CegarLoopResult]: For program point L42(lines 42 46) no Hoare annotation was computed. [2020-11-06 22:00:13,143 INFO L269 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: true [2020-11-06 22:00:13,143 INFO L266 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-11-06 22:00:13,143 INFO L266 CegarLoopResult]: For program point L35(lines 35 40) no Hoare annotation was computed. [2020-11-06 22:00:13,143 INFO L266 CegarLoopResult]: For program point ackermannEXIT(lines 16 24) no Hoare annotation was computed. [2020-11-06 22:00:13,143 INFO L262 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (not (= |ackermann_#in~n| 0)) (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|) (or (not (<= 0 |ackermann_#in~m|)) (not (<= |ackermann_#in~n| 1)) (<= 1 |ackermann_#in~m|))) [2020-11-06 22:00:13,143 INFO L266 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-11-06 22:00:13,143 INFO L269 CegarLoopResult]: At program point ackermannENTRY(lines 16 24) the Hoare annotation is: true [2020-11-06 22:00:13,143 INFO L262 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2020-11-06 22:00:13,145 INFO L262 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse0 (not (<= 1 |ackermann_#in~m|))) (.cse6 (<= |ackermann_#in~n| 1)) (.cse3 (<= |ackermann_#t~ret8| 5)) (.cse5 (<= 3 |ackermann_#in~n|)) (.cse4 (<= 5 |ackermann_#t~ret8|)) (.cse2 (<= |ackermann_#in~m| 1)) (.cse1 (<= 2 |ackermann_#in~n|)) (.cse9 (<= 3 |ackermann_#in~m|))) (and (or (not (<= |ackermann_#in~n| 0)) .cse0) (or (and (<= |ackermann_#t~ret8| 3) (<= |ackermann_#in~n| 2) (<= 3 |ackermann_#t~ret8|) .cse1) (not .cse2) (and (<= 4 |ackermann_#in~n|) .cse3 .cse4 (<= |ackermann_#in~n| 4)) (and (<= 6 |ackermann_#in~n|) .cse4) (and (<= |ackermann_#in~n| 3) (<= |ackermann_#t~ret8| 4) .cse5 (<= 4 |ackermann_#t~ret8|)) (and (<= 6 |ackermann_#t~ret8|) (<= 5 |ackermann_#in~n|) (<= |ackermann_#t~ret8| 6)) (and .cse6 (<= |ackermann_#t~ret8| 2) (<= 2 |ackermann_#t~ret8|)) .cse0) (let ((.cse7 (<= |ackermann_#in~m| 2)) (.cse8 (<= 2 |ackermann_#in~m|))) (or .cse6 .cse2 (and .cse7 .cse3 .cse4 .cse8) .cse9 (and .cse7 .cse5 .cse4 .cse8))) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|) (or (not (<= |ackermann_#in~m| 0)) (= |ackermann_#in~m| 0)) (or .cse2 (= |ackermann_#t~ret8| 3) .cse1 .cse9))) [2020-11-06 22:00:13,145 INFO L266 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-11-06 22:00:13,145 INFO L266 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-11-06 22:00:13,145 INFO L266 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-11-06 22:00:13,145 INFO L266 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-11-06 22:00:13,146 INFO L266 CegarLoopResult]: For program point ackermannFINAL(lines 16 24) no Hoare annotation was computed. [2020-11-06 22:00:13,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:00:13 BoogieIcfgContainer [2020-11-06 22:00:13,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:00:13,161 INFO L168 Benchmark]: Toolchain (without parser) took 46387.91 ms. Allocated memory was 157.3 MB in the beginning and 476.1 MB in the end (delta: 318.8 MB). Free memory was 131.6 MB in the beginning and 379.1 MB in the end (delta: -247.5 MB). Peak memory consumption was 279.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:00:13,161 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 157.3 MB. Free memory is still 129.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:00:13,162 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.64 ms. Allocated memory is still 157.3 MB. Free memory was 130.9 MB in the beginning and 121.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:00:13,162 INFO L168 Benchmark]: Boogie Preprocessor took 34.57 ms. Allocated memory is still 157.3 MB. Free memory was 121.8 MB in the beginning and 120.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:00:13,163 INFO L168 Benchmark]: RCFGBuilder took 526.01 ms. Allocated memory is still 157.3 MB. Free memory was 120.4 MB in the beginning and 105.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:00:13,165 INFO L168 Benchmark]: TraceAbstraction took 45512.48 ms. Allocated memory was 157.3 MB in the beginning and 476.1 MB in the end (delta: 318.8 MB). Free memory was 105.4 MB in the beginning and 379.1 MB in the end (delta: -273.7 MB). Peak memory consumption was 253.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:00:13,172 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 157.3 MB. Free memory is still 129.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 297.64 ms. Allocated memory is still 157.3 MB. Free memory was 130.9 MB in the beginning and 121.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.57 ms. Allocated memory is still 157.3 MB. Free memory was 121.8 MB in the beginning and 120.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 526.01 ms. Allocated memory is still 157.3 MB. Free memory was 120.4 MB in the beginning and 105.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 45512.48 ms. Allocated memory was 157.3 MB in the beginning and 476.1 MB in the end (delta: 318.8 MB). Free memory was 105.4 MB in the beginning and 379.1 MB in the end (delta: -273.7 MB). Peak memory consumption was 253.0 MB. Max. memory is 8.0 GB. * 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 39.6s, OverallIterations: 14, TraceHistogramMax: 44, AutomataDifference: 24.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 443 SDtfs, 781 SDslu, 749 SDs, 0 SdLazy, 7536 SolverSat, 1441 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2873 GetRequests, 2361 SyntacticMatches, 7 SemanticMatches, 505 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5115 ImplicationChecksByTransitivity, 18.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 151 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 512 PreInvPairs, 851 NumberOfFragments, 219 HoareAnnotationTreeSize, 512 FomulaSimplifications, 330358 FormulaSimplificationTreeSizeReduction, 2.5s HoareSimplificationTime, 11 FomulaSimplificationsInter, 21747 FormulaSimplificationTreeSizeReductionInter, 3.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 3677 NumberOfCodeBlocks, 3402 NumberOfCodeBlocksAsserted, 101 NumberOfCheckSat, 3650 ConstructedInterpolants, 0 QuantifiedInterpolants, 1202867 SizeOfPredicates, 95 NumberOfNonLiveVariables, 5248 ConjunctsInSsa, 339 ConjunctsInUnsatCore, 27 InterpolantComputations, 1 PerfectInterpolantSequences, 26767/32548 InterpolantCoveringCapability, 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...