/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/psyco/psyco_abp_1-3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:10:53,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:10:53,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:10:53,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 03:10:53,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:10:53,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:10:53,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:10:53,860 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:10:53,915 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:10:53,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:10:53,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:10:53,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:10:53,920 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:10:53,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:10:53,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:10:53,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:10:53,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:10:53,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:10:53,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:10:53,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:10:53,923 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:10:53,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:10:53,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:10:53,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:10:53,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:10:53,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:10:53,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:10:53,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:10:53,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:10:53,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:10:53,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:10:53,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:10:53,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:10:53,925 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:10:54,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:10:54,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:10:54,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:10:54,432 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:10:54,432 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:10:54,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_abp_1-3.c [2020-12-22 03:10:54,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa92ce86b/a39bc68565924b10806b4de569016461/FLAGda647d795 [2020-12-22 03:10:55,255 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:10:55,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_abp_1-3.c [2020-12-22 03:10:55,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa92ce86b/a39bc68565924b10806b4de569016461/FLAGda647d795 [2020-12-22 03:10:55,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa92ce86b/a39bc68565924b10806b4de569016461 [2020-12-22 03:10:55,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:10:55,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:10:55,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:10:55,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:10:55,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:10:55,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:10:55" (1/1) ... [2020-12-22 03:10:55,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3085c74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:10:55, skipping insertion in model container [2020-12-22 03:10:55,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:10:55" (1/1) ... [2020-12-22 03:10:55,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:10:55,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:10:55,942 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_abp_1-3.c[24720,24733] [2020-12-22 03:10:55,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:10:55,988 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:10:56,156 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_abp_1-3.c[24720,24733] [2020-12-22 03:10:56,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:10:56,206 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:10:56,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:10:56 WrapperNode [2020-12-22 03:10:56,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:10:56,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:10:56,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:10:56,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:10:56,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:10:56" (1/1) ... [2020-12-22 03:10:56,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:10:56" (1/1) ... [2020-12-22 03:10:56,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:10:56,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:10:56,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:10:56,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:10:56,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:10:56" (1/1) ... [2020-12-22 03:10:56,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:10:56" (1/1) ... [2020-12-22 03:10:56,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:10:56" (1/1) ... [2020-12-22 03:10:56,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:10:56" (1/1) ... [2020-12-22 03:10:56,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:10:56" (1/1) ... [2020-12-22 03:10:56,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:10:56" (1/1) ... [2020-12-22 03:10:56,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:10:56" (1/1) ... [2020-12-22 03:10:56,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:10:56,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:10:56,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:10:56,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:10:56,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:10:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:10:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:10:56,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:10:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:10:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:10:57,634 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:10:57,635 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-22 03:10:57,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:10:57 BoogieIcfgContainer [2020-12-22 03:10:57,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:10:57,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:10:57,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:10:57,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:10:57,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:10:55" (1/3) ... [2020-12-22 03:10:57,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70be189c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:10:57, skipping insertion in model container [2020-12-22 03:10:57,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:10:56" (2/3) ... [2020-12-22 03:10:57,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70be189c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:10:57, skipping insertion in model container [2020-12-22 03:10:57,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:10:57" (3/3) ... [2020-12-22 03:10:57,647 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-3.c [2020-12-22 03:10:57,655 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:10:57,660 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:10:57,681 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:10:57,711 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:10:57,711 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:10:57,711 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:10:57,711 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:10:57,711 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:10:57,712 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:10:57,712 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:10:57,712 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:10:57,732 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states. [2020-12-22 03:10:57,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 03:10:57,739 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:10:57,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:10:57,744 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:10:57,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:10:57,754 INFO L82 PathProgramCache]: Analyzing trace with hash 352571511, now seen corresponding path program 1 times [2020-12-22 03:10:57,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:10:57,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842644154] [2020-12-22 03:10:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:10:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:10:57,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:10:57,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842644154] [2020-12-22 03:10:57,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:10:57,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:10:57,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086049886] [2020-12-22 03:10:57,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:10:57,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:10:58,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:10:58,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:10:58,007 INFO L87 Difference]: Start difference. First operand 109 states. Second operand 2 states. [2020-12-22 03:10:58,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:10:58,074 INFO L93 Difference]: Finished difference Result 216 states and 416 transitions. [2020-12-22 03:10:58,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:10:58,076 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-22 03:10:58,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:10:58,107 INFO L225 Difference]: With dead ends: 216 [2020-12-22 03:10:58,108 INFO L226 Difference]: Without dead ends: 100 [2020-12-22 03:10:58,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:10:58,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-12-22 03:10:58,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-12-22 03:10:58,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 03:10:58,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 165 transitions. [2020-12-22 03:10:58,166 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 165 transitions. Word has length 9 [2020-12-22 03:10:58,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:10:58,167 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 165 transitions. [2020-12-22 03:10:58,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:10:58,167 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 165 transitions. [2020-12-22 03:10:58,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 03:10:58,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:10:58,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:10:58,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:10:58,170 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:10:58,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:10:58,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1422697561, now seen corresponding path program 1 times [2020-12-22 03:10:58,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:10:58,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774094476] [2020-12-22 03:10:58,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:10:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:10:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:10:58,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774094476] [2020-12-22 03:10:58,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:10:58,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:10:58,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20172368] [2020-12-22 03:10:58,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:10:58,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:10:58,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:10:58,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:10:58,244 INFO L87 Difference]: Start difference. First operand 100 states and 165 transitions. Second operand 3 states. [2020-12-22 03:10:58,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:10:58,343 INFO L93 Difference]: Finished difference Result 201 states and 332 transitions. [2020-12-22 03:10:58,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:10:58,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-22 03:10:58,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:10:58,347 INFO L225 Difference]: With dead ends: 201 [2020-12-22 03:10:58,348 INFO L226 Difference]: Without dead ends: 103 [2020-12-22 03:10:58,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:10:58,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-22 03:10:58,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-12-22 03:10:58,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-22 03:10:58,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 168 transitions. [2020-12-22 03:10:58,374 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 168 transitions. Word has length 10 [2020-12-22 03:10:58,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:10:58,375 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 168 transitions. [2020-12-22 03:10:58,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:10:58,375 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 168 transitions. [2020-12-22 03:10:58,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 03:10:58,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:10:58,377 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:10:58,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:10:58,377 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:10:58,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:10:58,380 INFO L82 PathProgramCache]: Analyzing trace with hash 658032730, now seen corresponding path program 1 times [2020-12-22 03:10:58,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:10:58,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340899016] [2020-12-22 03:10:58,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:10:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:10:58,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:10:58,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340899016] [2020-12-22 03:10:58,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:10:58,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:10:58,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473337042] [2020-12-22 03:10:58,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:10:58,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:10:58,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:10:58,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:10:58,605 INFO L87 Difference]: Start difference. First operand 103 states and 168 transitions. Second operand 3 states. [2020-12-22 03:10:58,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:10:58,786 INFO L93 Difference]: Finished difference Result 205 states and 334 transitions. [2020-12-22 03:10:58,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:10:58,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-22 03:10:58,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:10:58,791 INFO L225 Difference]: With dead ends: 205 [2020-12-22 03:10:58,791 INFO L226 Difference]: Without dead ends: 186 [2020-12-22 03:10:58,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:10:58,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-12-22 03:10:58,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2020-12-22 03:10:58,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-12-22 03:10:58,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 281 transitions. [2020-12-22 03:10:58,824 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 281 transitions. Word has length 15 [2020-12-22 03:10:58,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:10:58,825 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 281 transitions. [2020-12-22 03:10:58,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:10:58,828 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 281 transitions. [2020-12-22 03:10:58,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 03:10:58,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:10:58,829 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:10:58,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 03:10:58,830 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:10:58,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:10:58,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1675425412, now seen corresponding path program 1 times [2020-12-22 03:10:58,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:10:58,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056445139] [2020-12-22 03:10:58,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:10:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:10:58,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:10:58,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056445139] [2020-12-22 03:10:58,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:10:58,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:10:58,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818414578] [2020-12-22 03:10:58,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:10:58,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:10:58,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:10:58,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:10:58,944 INFO L87 Difference]: Start difference. First operand 172 states and 281 transitions. Second operand 3 states. [2020-12-22 03:10:58,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:10:58,994 INFO L93 Difference]: Finished difference Result 293 states and 477 transitions. [2020-12-22 03:10:58,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:10:58,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-22 03:10:58,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:10:58,999 INFO L225 Difference]: With dead ends: 293 [2020-12-22 03:10:58,999 INFO L226 Difference]: Without dead ends: 124 [2020-12-22 03:10:59,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:10:59,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-22 03:10:59,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-12-22 03:10:59,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-22 03:10:59,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 194 transitions. [2020-12-22 03:10:59,033 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 194 transitions. Word has length 16 [2020-12-22 03:10:59,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:10:59,034 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 194 transitions. [2020-12-22 03:10:59,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:10:59,036 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 194 transitions. [2020-12-22 03:10:59,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 03:10:59,037 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:10:59,037 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:10:59,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 03:10:59,038 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:10:59,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:10:59,038 INFO L82 PathProgramCache]: Analyzing trace with hash -843118083, now seen corresponding path program 1 times [2020-12-22 03:10:59,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:10:59,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499613023] [2020-12-22 03:10:59,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:10:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:10:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 03:10:59,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499613023] [2020-12-22 03:10:59,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:10:59,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:10:59,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633949593] [2020-12-22 03:10:59,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:10:59,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:10:59,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:10:59,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:10:59,116 INFO L87 Difference]: Start difference. First operand 122 states and 194 transitions. Second operand 3 states. [2020-12-22 03:10:59,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:10:59,153 INFO L93 Difference]: Finished difference Result 226 states and 358 transitions. [2020-12-22 03:10:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:10:59,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 03:10:59,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:10:59,158 INFO L225 Difference]: With dead ends: 226 [2020-12-22 03:10:59,158 INFO L226 Difference]: Without dead ends: 107 [2020-12-22 03:10:59,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:10:59,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-22 03:10:59,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2020-12-22 03:10:59,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-22 03:10:59,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 163 transitions. [2020-12-22 03:10:59,177 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 163 transitions. Word has length 21 [2020-12-22 03:10:59,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:10:59,178 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 163 transitions. [2020-12-22 03:10:59,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:10:59,178 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 163 transitions. [2020-12-22 03:10:59,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 03:10:59,180 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:10:59,180 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:10:59,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 03:10:59,180 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:10:59,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:10:59,181 INFO L82 PathProgramCache]: Analyzing trace with hash -671640130, now seen corresponding path program 1 times [2020-12-22 03:10:59,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:10:59,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322968648] [2020-12-22 03:10:59,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:10:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:10:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:10:59,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322968648] [2020-12-22 03:10:59,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447852982] [2020-12-22 03:10:59,477 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 [2020-12-22 03:10:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:10:59,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 03:10:59,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:10:59,724 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:10:59,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:10:59,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-12-22 03:10:59,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47850792] [2020-12-22 03:10:59,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 03:10:59,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:10:59,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 03:10:59,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-22 03:10:59,728 INFO L87 Difference]: Start difference. First operand 105 states and 163 transitions. Second operand 9 states. [2020-12-22 03:11:00,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:11:00,778 INFO L93 Difference]: Finished difference Result 446 states and 699 transitions. [2020-12-22 03:11:00,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 03:11:00,779 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-12-22 03:11:00,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:11:00,781 INFO L225 Difference]: With dead ends: 446 [2020-12-22 03:11:00,782 INFO L226 Difference]: Without dead ends: 327 [2020-12-22 03:11:00,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2020-12-22 03:11:00,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-12-22 03:11:00,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 291. [2020-12-22 03:11:00,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-12-22 03:11:00,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 458 transitions. [2020-12-22 03:11:00,797 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 458 transitions. Word has length 23 [2020-12-22 03:11:00,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:11:00,797 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 458 transitions. [2020-12-22 03:11:00,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 03:11:00,797 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 458 transitions. [2020-12-22 03:11:00,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 03:11:00,799 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:11:00,799 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:11:01,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 03:11:01,015 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:11:01,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:11:01,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1800121285, now seen corresponding path program 1 times [2020-12-22 03:11:01,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:11:01,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964189853] [2020-12-22 03:11:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:11:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:11:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 03:11:01,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964189853] [2020-12-22 03:11:01,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:11:01,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:11:01,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766286821] [2020-12-22 03:11:01,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:11:01,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:11:01,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:11:01,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:11:01,076 INFO L87 Difference]: Start difference. First operand 291 states and 458 transitions. Second operand 3 states. [2020-12-22 03:11:01,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:11:01,123 INFO L93 Difference]: Finished difference Result 580 states and 909 transitions. [2020-12-22 03:11:01,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:11:01,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 03:11:01,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:11:01,126 INFO L225 Difference]: With dead ends: 580 [2020-12-22 03:11:01,126 INFO L226 Difference]: Without dead ends: 313 [2020-12-22 03:11:01,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:11:01,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-12-22 03:11:01,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 311. [2020-12-22 03:11:01,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-12-22 03:11:01,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 478 transitions. [2020-12-22 03:11:01,151 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 478 transitions. Word has length 25 [2020-12-22 03:11:01,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:11:01,151 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 478 transitions. [2020-12-22 03:11:01,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:11:01,151 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 478 transitions. [2020-12-22 03:11:01,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 03:11:01,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:11:01,152 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:11:01,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 03:11:01,153 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:11:01,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:11:01,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2124865792, now seen corresponding path program 1 times [2020-12-22 03:11:01,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:11:01,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619596673] [2020-12-22 03:11:01,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:11:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:11:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 03:11:01,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619596673] [2020-12-22 03:11:01,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:11:01,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:11:01,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786484794] [2020-12-22 03:11:01,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:11:01,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:11:01,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:11:01,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:11:01,231 INFO L87 Difference]: Start difference. First operand 311 states and 478 transitions. Second operand 3 states. [2020-12-22 03:11:01,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:11:01,248 INFO L93 Difference]: Finished difference Result 314 states and 480 transitions. [2020-12-22 03:11:01,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:11:01,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 03:11:01,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:11:01,251 INFO L225 Difference]: With dead ends: 314 [2020-12-22 03:11:01,251 INFO L226 Difference]: Without dead ends: 308 [2020-12-22 03:11:01,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:11:01,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-12-22 03:11:01,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 307. [2020-12-22 03:11:01,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-12-22 03:11:01,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 466 transitions. [2020-12-22 03:11:01,264 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 466 transitions. Word has length 27 [2020-12-22 03:11:01,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:11:01,265 INFO L481 AbstractCegarLoop]: Abstraction has 307 states and 466 transitions. [2020-12-22 03:11:01,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:11:01,265 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 466 transitions. [2020-12-22 03:11:01,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 03:11:01,266 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:11:01,266 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:11:01,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 03:11:01,267 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:11:01,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:11:01,267 INFO L82 PathProgramCache]: Analyzing trace with hash -917092134, now seen corresponding path program 1 times [2020-12-22 03:11:01,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:11:01,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41347898] [2020-12-22 03:11:01,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:11:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:11:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 03:11:01,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41347898] [2020-12-22 03:11:01,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:11:01,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:11:01,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982915254] [2020-12-22 03:11:01,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:11:01,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:11:01,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:11:01,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:11:01,311 INFO L87 Difference]: Start difference. First operand 307 states and 466 transitions. Second operand 3 states. [2020-12-22 03:11:01,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:11:01,352 INFO L93 Difference]: Finished difference Result 506 states and 768 transitions. [2020-12-22 03:11:01,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:11:01,353 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-12-22 03:11:01,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:11:01,355 INFO L225 Difference]: With dead ends: 506 [2020-12-22 03:11:01,355 INFO L226 Difference]: Without dead ends: 223 [2020-12-22 03:11:01,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:11:01,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-12-22 03:11:01,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-12-22 03:11:01,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-12-22 03:11:01,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 330 transitions. [2020-12-22 03:11:01,366 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 330 transitions. Word has length 33 [2020-12-22 03:11:01,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:11:01,366 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 330 transitions. [2020-12-22 03:11:01,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:11:01,367 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 330 transitions. [2020-12-22 03:11:01,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 03:11:01,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:11:01,368 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:11:01,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 03:11:01,368 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:11:01,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:11:01,369 INFO L82 PathProgramCache]: Analyzing trace with hash 272165387, now seen corresponding path program 1 times [2020-12-22 03:11:01,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:11:01,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193157085] [2020-12-22 03:11:01,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:11:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:11:01,408 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 03:11:01,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193157085] [2020-12-22 03:11:01,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:11:01,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:11:01,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816833865] [2020-12-22 03:11:01,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:11:01,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:11:01,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:11:01,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:11:01,410 INFO L87 Difference]: Start difference. First operand 221 states and 330 transitions. Second operand 3 states. [2020-12-22 03:11:01,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:11:01,453 INFO L93 Difference]: Finished difference Result 384 states and 570 transitions. [2020-12-22 03:11:01,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:11:01,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-12-22 03:11:01,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:11:01,459 INFO L225 Difference]: With dead ends: 384 [2020-12-22 03:11:01,459 INFO L226 Difference]: Without dead ends: 205 [2020-12-22 03:11:01,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:11:01,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-12-22 03:11:01,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2020-12-22 03:11:01,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-12-22 03:11:01,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 293 transitions. [2020-12-22 03:11:01,472 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 293 transitions. Word has length 37 [2020-12-22 03:11:01,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:11:01,472 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 293 transitions. [2020-12-22 03:11:01,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:11:01,472 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 293 transitions. [2020-12-22 03:11:01,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 03:11:01,476 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:11:01,476 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:11:01,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 03:11:01,478 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:11:01,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:11:01,479 INFO L82 PathProgramCache]: Analyzing trace with hash -140510671, now seen corresponding path program 1 times [2020-12-22 03:11:01,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:11:01,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612329655] [2020-12-22 03:11:01,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:11:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:11:01,565 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 03:11:01,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612329655] [2020-12-22 03:11:01,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:11:01,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:11:01,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728547051] [2020-12-22 03:11:01,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:11:01,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:11:01,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:11:01,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:11:01,568 INFO L87 Difference]: Start difference. First operand 203 states and 293 transitions. Second operand 3 states. [2020-12-22 03:11:01,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:11:01,602 INFO L93 Difference]: Finished difference Result 285 states and 411 transitions. [2020-12-22 03:11:01,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:11:01,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-12-22 03:11:01,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:11:01,604 INFO L225 Difference]: With dead ends: 285 [2020-12-22 03:11:01,604 INFO L226 Difference]: Without dead ends: 143 [2020-12-22 03:11:01,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:11:01,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-22 03:11:01,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2020-12-22 03:11:01,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-22 03:11:01,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 199 transitions. [2020-12-22 03:11:01,612 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 199 transitions. Word has length 46 [2020-12-22 03:11:01,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:11:01,612 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 199 transitions. [2020-12-22 03:11:01,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:11:01,612 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 199 transitions. [2020-12-22 03:11:01,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 03:11:01,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:11:01,613 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:11:01,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 03:11:01,613 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:11:01,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:11:01,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1014660280, now seen corresponding path program 1 times [2020-12-22 03:11:01,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:11:01,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713243412] [2020-12-22 03:11:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:11:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:11:01,780 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 03:11:01,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713243412] [2020-12-22 03:11:01,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216675279] [2020-12-22 03:11:01,781 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 [2020-12-22 03:11:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:11:01,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 03:11:01,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:11:02,064 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:11:02,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:11:02,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2020-12-22 03:11:02,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434651580] [2020-12-22 03:11:02,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 03:11:02,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:11:02,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 03:11:02,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 03:11:02,066 INFO L87 Difference]: Start difference. First operand 141 states and 199 transitions. Second operand 11 states. [2020-12-22 03:11:02,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:11:02,203 INFO L93 Difference]: Finished difference Result 167 states and 233 transitions. [2020-12-22 03:11:02,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 03:11:02,203 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-12-22 03:11:02,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:11:02,206 INFO L225 Difference]: With dead ends: 167 [2020-12-22 03:11:02,206 INFO L226 Difference]: Without dead ends: 160 [2020-12-22 03:11:02,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 03:11:02,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-12-22 03:11:02,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-12-22 03:11:02,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-12-22 03:11:02,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 220 transitions. [2020-12-22 03:11:02,215 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 220 transitions. Word has length 47 [2020-12-22 03:11:02,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:11:02,217 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 220 transitions. [2020-12-22 03:11:02,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 03:11:02,217 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 220 transitions. [2020-12-22 03:11:02,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 03:11:02,218 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:11:02,218 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:11:02,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 03:11:02,434 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:11:02,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:11:02,434 INFO L82 PathProgramCache]: Analyzing trace with hash 751253453, now seen corresponding path program 1 times [2020-12-22 03:11:02,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:11:02,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816446624] [2020-12-22 03:11:02,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:11:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:11:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:11:02,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816446624] [2020-12-22 03:11:02,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450775108] [2020-12-22 03:11:02,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-22 03:11:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:11:02,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 03:11:02,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:11:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:11:03,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:11:03,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-12-22 03:11:03,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920103910] [2020-12-22 03:11:03,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 03:11:03,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:11:03,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 03:11:03,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-12-22 03:11:03,194 INFO L87 Difference]: Start difference. First operand 158 states and 220 transitions. Second operand 13 states. [2020-12-22 03:11:03,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:11:03,573 INFO L93 Difference]: Finished difference Result 252 states and 354 transitions. [2020-12-22 03:11:03,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 03:11:03,574 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-12-22 03:11:03,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:11:03,575 INFO L225 Difference]: With dead ends: 252 [2020-12-22 03:11:03,575 INFO L226 Difference]: Without dead ends: 250 [2020-12-22 03:11:03,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-12-22 03:11:03,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-12-22 03:11:03,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2020-12-22 03:11:03,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-12-22 03:11:03,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 346 transitions. [2020-12-22 03:11:03,588 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 346 transitions. Word has length 57 [2020-12-22 03:11:03,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:11:03,589 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 346 transitions. [2020-12-22 03:11:03,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 03:11:03,589 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 346 transitions. [2020-12-22 03:11:03,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 03:11:03,590 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:11:03,590 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:11:03,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 03:11:03,805 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:11:03,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:11:03,806 INFO L82 PathProgramCache]: Analyzing trace with hash 366250712, now seen corresponding path program 1 times [2020-12-22 03:11:03,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:11:03,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532301563] [2020-12-22 03:11:03,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:11:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:11:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 20 proven. 175 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-12-22 03:11:04,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532301563] [2020-12-22 03:11:04,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211748914] [2020-12-22 03:11:04,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-22 03:11:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:11:04,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-22 03:11:04,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:11:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 20 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:11:05,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:11:05,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 19 [2020-12-22 03:11:05,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267048620] [2020-12-22 03:11:05,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 03:11:05,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:11:05,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 03:11:05,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-12-22 03:11:05,131 INFO L87 Difference]: Start difference. First operand 248 states and 346 transitions. Second operand 19 states. [2020-12-22 03:11:05,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:11:05,326 INFO L93 Difference]: Finished difference Result 266 states and 372 transitions. [2020-12-22 03:11:05,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 03:11:05,327 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 108 [2020-12-22 03:11:05,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:11:05,327 INFO L225 Difference]: With dead ends: 266 [2020-12-22 03:11:05,327 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 03:11:05,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 98 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-12-22 03:11:05,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 03:11:05,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 03:11:05,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 03:11:05,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 03:11:05,329 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 108 [2020-12-22 03:11:05,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:11:05,330 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 03:11:05,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 03:11:05,330 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 03:11:05,330 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 03:11:05,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:11:05,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 03:11:05,999 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 42 [2020-12-22 03:11:06,004 INFO L189 CegarLoopUtils]: For program point L432(lines 432 434) no Hoare annotation was computed. [2020-12-22 03:11:06,005 INFO L189 CegarLoopUtils]: For program point L300(lines 300 302) no Hoare annotation was computed. [2020-12-22 03:11:06,005 INFO L189 CegarLoopUtils]: For program point L168(lines 168 170) no Hoare annotation was computed. [2020-12-22 03:11:06,005 INFO L189 CegarLoopUtils]: For program point L532(lines 532 534) no Hoare annotation was computed. [2020-12-22 03:11:06,005 INFO L189 CegarLoopUtils]: For program point L400(lines 400 402) no Hoare annotation was computed. [2020-12-22 03:11:06,005 INFO L189 CegarLoopUtils]: For program point L268(lines 268 270) no Hoare annotation was computed. [2020-12-22 03:11:06,005 INFO L189 CegarLoopUtils]: For program point L500(lines 500 502) no Hoare annotation was computed. [2020-12-22 03:11:06,005 INFO L189 CegarLoopUtils]: For program point L368(lines 368 370) no Hoare annotation was computed. [2020-12-22 03:11:06,005 INFO L189 CegarLoopUtils]: For program point L468(lines 468 470) no Hoare annotation was computed. [2020-12-22 03:11:06,005 INFO L189 CegarLoopUtils]: For program point L41(lines 41 60) no Hoare annotation was computed. [2020-12-22 03:11:06,005 INFO L189 CegarLoopUtils]: For program point L42(lines 42 57) no Hoare annotation was computed. [2020-12-22 03:11:06,006 INFO L189 CegarLoopUtils]: For program point L142(lines 142 157) no Hoare annotation was computed. [2020-12-22 03:11:06,006 INFO L189 CegarLoopUtils]: For program point L242(lines 242 257) no Hoare annotation was computed. [2020-12-22 03:11:06,006 INFO L189 CegarLoopUtils]: For program point L110(lines 110 125) no Hoare annotation was computed. [2020-12-22 03:11:06,006 INFO L189 CegarLoopUtils]: For program point L44(lines 44 55) no Hoare annotation was computed. [2020-12-22 03:11:06,006 INFO L189 CegarLoopUtils]: For program point L342(lines 342 357) no Hoare annotation was computed. [2020-12-22 03:11:06,006 INFO L189 CegarLoopUtils]: For program point L210(lines 210 225) no Hoare annotation was computed. [2020-12-22 03:11:06,006 INFO L189 CegarLoopUtils]: For program point L144(lines 144 155) no Hoare annotation was computed. [2020-12-22 03:11:06,006 INFO L189 CegarLoopUtils]: For program point L78(lines 78 93) no Hoare annotation was computed. [2020-12-22 03:11:06,006 INFO L189 CegarLoopUtils]: For program point L442(lines 442 457) no Hoare annotation was computed. [2020-12-22 03:11:06,006 INFO L189 CegarLoopUtils]: For program point L310(lines 310 325) no Hoare annotation was computed. [2020-12-22 03:11:06,007 INFO L189 CegarLoopUtils]: For program point L244(lines 244 255) no Hoare annotation was computed. [2020-12-22 03:11:06,007 INFO L189 CegarLoopUtils]: For program point L178(lines 178 193) no Hoare annotation was computed. [2020-12-22 03:11:06,007 INFO L189 CegarLoopUtils]: For program point L112(lines 112 123) no Hoare annotation was computed. [2020-12-22 03:11:06,007 INFO L189 CegarLoopUtils]: For program point L542(lines 542 557) no Hoare annotation was computed. [2020-12-22 03:11:06,007 INFO L189 CegarLoopUtils]: For program point L410(lines 410 425) no Hoare annotation was computed. [2020-12-22 03:11:06,007 INFO L189 CegarLoopUtils]: For program point L344(lines 344 355) no Hoare annotation was computed. [2020-12-22 03:11:06,007 INFO L189 CegarLoopUtils]: For program point L278(lines 278 293) no Hoare annotation was computed. [2020-12-22 03:11:06,007 INFO L189 CegarLoopUtils]: For program point L212(lines 212 223) no Hoare annotation was computed. [2020-12-22 03:11:06,007 INFO L189 CegarLoopUtils]: For program point L80(lines 80 91) no Hoare annotation was computed. [2020-12-22 03:11:06,008 INFO L189 CegarLoopUtils]: For program point L510(lines 510 525) no Hoare annotation was computed. [2020-12-22 03:11:06,008 INFO L189 CegarLoopUtils]: For program point L444(lines 444 455) no Hoare annotation was computed. [2020-12-22 03:11:06,008 INFO L189 CegarLoopUtils]: For program point L378(lines 378 393) no Hoare annotation was computed. [2020-12-22 03:11:06,008 INFO L189 CegarLoopUtils]: For program point L312(lines 312 323) no Hoare annotation was computed. [2020-12-22 03:11:06,008 INFO L189 CegarLoopUtils]: For program point L180(lines 180 191) no Hoare annotation was computed. [2020-12-22 03:11:06,008 INFO L189 CegarLoopUtils]: For program point L48(lines 48 50) no Hoare annotation was computed. [2020-12-22 03:11:06,008 INFO L189 CegarLoopUtils]: For program point L544(lines 544 555) no Hoare annotation was computed. [2020-12-22 03:11:06,008 INFO L189 CegarLoopUtils]: For program point L478(lines 478 493) no Hoare annotation was computed. [2020-12-22 03:11:06,008 INFO L189 CegarLoopUtils]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-22 03:11:06,008 INFO L189 CegarLoopUtils]: For program point L280(lines 280 291) no Hoare annotation was computed. [2020-12-22 03:11:06,009 INFO L189 CegarLoopUtils]: For program point L148(lines 148 150) no Hoare annotation was computed. [2020-12-22 03:11:06,009 INFO L192 CegarLoopUtils]: At program point L16(lines 16 568) the Hoare annotation is: true [2020-12-22 03:11:06,009 INFO L189 CegarLoopUtils]: For program point L512(lines 512 523) no Hoare annotation was computed. [2020-12-22 03:11:06,009 INFO L189 CegarLoopUtils]: For program point L380(lines 380 391) no Hoare annotation was computed. [2020-12-22 03:11:06,009 INFO L189 CegarLoopUtils]: For program point L248(lines 248 250) no Hoare annotation was computed. [2020-12-22 03:11:06,009 INFO L189 CegarLoopUtils]: For program point L116(lines 116 118) no Hoare annotation was computed. [2020-12-22 03:11:06,010 INFO L189 CegarLoopUtils]: For program point L480(lines 480 491) no Hoare annotation was computed. [2020-12-22 03:11:06,010 INFO L189 CegarLoopUtils]: For program point L348(lines 348 350) no Hoare annotation was computed. [2020-12-22 03:11:06,010 INFO L189 CegarLoopUtils]: For program point L216(lines 216 218) no Hoare annotation was computed. [2020-12-22 03:11:06,010 INFO L189 CegarLoopUtils]: For program point L84(lines 84 86) no Hoare annotation was computed. [2020-12-22 03:11:06,010 INFO L189 CegarLoopUtils]: For program point L448(lines 448 450) no Hoare annotation was computed. [2020-12-22 03:11:06,010 INFO L189 CegarLoopUtils]: For program point L316(lines 316 318) no Hoare annotation was computed. [2020-12-22 03:11:06,010 INFO L189 CegarLoopUtils]: For program point L184(lines 184 186) no Hoare annotation was computed. [2020-12-22 03:11:06,010 INFO L189 CegarLoopUtils]: For program point L548(lines 548 550) no Hoare annotation was computed. [2020-12-22 03:11:06,010 INFO L189 CegarLoopUtils]: For program point L416(lines 416 418) no Hoare annotation was computed. [2020-12-22 03:11:06,010 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 03:11:06,010 INFO L189 CegarLoopUtils]: For program point L284(lines 284 286) no Hoare annotation was computed. [2020-12-22 03:11:06,010 INFO L185 CegarLoopUtils]: At program point L549(lines 16 568) the Hoare annotation is: false [2020-12-22 03:11:06,011 INFO L189 CegarLoopUtils]: For program point L516(lines 516 518) no Hoare annotation was computed. [2020-12-22 03:11:06,011 INFO L189 CegarLoopUtils]: For program point L384(lines 384 386) no Hoare annotation was computed. [2020-12-22 03:11:06,011 INFO L189 CegarLoopUtils]: For program point L484(lines 484 486) no Hoare annotation was computed. [2020-12-22 03:11:06,011 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 03:11:06,011 INFO L185 CegarLoopUtils]: At program point L26-2(lines 26 563) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~this_buffer_empty~0 0))) (or (and (<= ULTIMATE.start_main_~this_expect~0 (+ (* 2 (div (+ ULTIMATE.start_main_~this_expect~0 (- 2)) 2)) 2)) (<= 5 ULTIMATE.start_main_~q~0) (<= 0 (+ ULTIMATE.start_main_~P8~0 2147483648)) .cse0 (<= (div ULTIMATE.start_main_~P8~0 4294967296) 0)) (and .cse0 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~this_expect~0 0)))) [2020-12-22 03:11:06,011 INFO L189 CegarLoopUtils]: For program point L26-3(lines 26 563) no Hoare annotation was computed. [2020-12-22 03:11:06,011 INFO L189 CegarLoopUtils]: For program point L126(lines 126 141) no Hoare annotation was computed. [2020-12-22 03:11:06,011 INFO L189 CegarLoopUtils]: For program point L226(lines 226 241) no Hoare annotation was computed. [2020-12-22 03:11:06,012 INFO L189 CegarLoopUtils]: For program point L94(lines 94 109) no Hoare annotation was computed. [2020-12-22 03:11:06,012 INFO L189 CegarLoopUtils]: For program point L61(lines 61 160) no Hoare annotation was computed. [2020-12-22 03:11:06,012 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 03:11:06,012 INFO L189 CegarLoopUtils]: For program point L326(lines 326 341) no Hoare annotation was computed. [2020-12-22 03:11:06,012 INFO L189 CegarLoopUtils]: For program point L194(lines 194 209) no Hoare annotation was computed. [2020-12-22 03:11:06,012 INFO L189 CegarLoopUtils]: For program point L161(lines 161 260) no Hoare annotation was computed. [2020-12-22 03:11:06,012 INFO L189 CegarLoopUtils]: For program point L128(lines 128 139) no Hoare annotation was computed. [2020-12-22 03:11:06,012 INFO L189 CegarLoopUtils]: For program point L62(lines 62 77) no Hoare annotation was computed. [2020-12-22 03:11:06,012 INFO L189 CegarLoopUtils]: For program point L426(lines 426 441) no Hoare annotation was computed. [2020-12-22 03:11:06,012 INFO L189 CegarLoopUtils]: For program point L294(lines 294 309) no Hoare annotation was computed. [2020-12-22 03:11:06,012 INFO L189 CegarLoopUtils]: For program point L261(lines 261 360) no Hoare annotation was computed. [2020-12-22 03:11:06,013 INFO L189 CegarLoopUtils]: For program point L228(lines 228 239) no Hoare annotation was computed. [2020-12-22 03:11:06,013 INFO L189 CegarLoopUtils]: For program point L162(lines 162 177) no Hoare annotation was computed. [2020-12-22 03:11:06,013 INFO L189 CegarLoopUtils]: For program point L96(lines 96 107) no Hoare annotation was computed. [2020-12-22 03:11:06,013 INFO L185 CegarLoopUtils]: At program point L559(lines 26 563) the Hoare annotation is: (let ((.cse4 (<= ULTIMATE.start_main_~this_expect~0 (+ (* 2 (div (+ ULTIMATE.start_main_~this_expect~0 (- 2)) 2)) 2))) (.cse3 (= ULTIMATE.start_main_~this_buffer_empty~0 1)) (.cse0 (<= ULTIMATE.start_main_~this_expect~0 (+ (* 2 (div (+ ULTIMATE.start_main_~this_expect~0 (- 1)) 2)) 1))) (.cse1 (<= 0 (+ ULTIMATE.start_main_~P8~0 2147483648))) (.cse5 (= ULTIMATE.start_main_~this_buffer_empty~0 0)) (.cse2 (<= (div ULTIMATE.start_main_~P8~0 4294967296) 0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~q~0 4) .cse3) (and .cse4 (<= 5 ULTIMATE.start_main_~q~0) .cse1 .cse5 .cse2) (and .cse5 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~this_expect~0 0)) (and (= ULTIMATE.start_main_~q~0 1) .cse4 .cse1 .cse2 .cse3) (and .cse0 .cse1 (= ULTIMATE.start_main_~q~0 3) .cse5 .cse2))) [2020-12-22 03:11:06,013 INFO L189 CegarLoopUtils]: For program point L526(lines 526 541) no Hoare annotation was computed. [2020-12-22 03:11:06,013 INFO L189 CegarLoopUtils]: For program point L394(lines 394 409) no Hoare annotation was computed. [2020-12-22 03:11:06,013 INFO L189 CegarLoopUtils]: For program point L361(lines 361 460) no Hoare annotation was computed. [2020-12-22 03:11:06,014 INFO L189 CegarLoopUtils]: For program point L328(lines 328 339) no Hoare annotation was computed. [2020-12-22 03:11:06,014 INFO L189 CegarLoopUtils]: For program point L262(lines 262 277) no Hoare annotation was computed. [2020-12-22 03:11:06,014 INFO L189 CegarLoopUtils]: For program point L196(lines 196 207) no Hoare annotation was computed. [2020-12-22 03:11:06,014 INFO L189 CegarLoopUtils]: For program point L64(lines 64 75) no Hoare annotation was computed. [2020-12-22 03:11:06,014 INFO L189 CegarLoopUtils]: For program point L494(lines 494 509) no Hoare annotation was computed. [2020-12-22 03:11:06,014 INFO L189 CegarLoopUtils]: For program point L461(lines 461 560) no Hoare annotation was computed. [2020-12-22 03:11:06,014 INFO L189 CegarLoopUtils]: For program point L428(lines 428 439) no Hoare annotation was computed. [2020-12-22 03:11:06,014 INFO L189 CegarLoopUtils]: For program point L362(lines 362 377) no Hoare annotation was computed. [2020-12-22 03:11:06,014 INFO L189 CegarLoopUtils]: For program point L296(lines 296 307) no Hoare annotation was computed. [2020-12-22 03:11:06,015 INFO L189 CegarLoopUtils]: For program point L164(lines 164 175) no Hoare annotation was computed. [2020-12-22 03:11:06,015 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 03:11:06,015 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 567) no Hoare annotation was computed. [2020-12-22 03:11:06,015 INFO L189 CegarLoopUtils]: For program point L528(lines 528 539) no Hoare annotation was computed. [2020-12-22 03:11:06,015 INFO L189 CegarLoopUtils]: For program point L462(lines 462 477) no Hoare annotation was computed. [2020-12-22 03:11:06,015 INFO L189 CegarLoopUtils]: For program point L396(lines 396 407) no Hoare annotation was computed. [2020-12-22 03:11:06,015 INFO L189 CegarLoopUtils]: For program point L264(lines 264 275) no Hoare annotation was computed. [2020-12-22 03:11:06,015 INFO L189 CegarLoopUtils]: For program point L132(lines 132 134) no Hoare annotation was computed. [2020-12-22 03:11:06,015 INFO L189 CegarLoopUtils]: For program point L496(lines 496 507) no Hoare annotation was computed. [2020-12-22 03:11:06,016 INFO L189 CegarLoopUtils]: For program point L364(lines 364 375) no Hoare annotation was computed. [2020-12-22 03:11:06,016 INFO L189 CegarLoopUtils]: For program point L232(lines 232 234) no Hoare annotation was computed. [2020-12-22 03:11:06,016 INFO L189 CegarLoopUtils]: For program point L100(lines 100 102) no Hoare annotation was computed. [2020-12-22 03:11:06,016 INFO L189 CegarLoopUtils]: For program point L464(lines 464 475) no Hoare annotation was computed. [2020-12-22 03:11:06,016 INFO L189 CegarLoopUtils]: For program point L332(lines 332 334) no Hoare annotation was computed. [2020-12-22 03:11:06,016 INFO L189 CegarLoopUtils]: For program point L200(lines 200 202) no Hoare annotation was computed. [2020-12-22 03:11:06,016 INFO L189 CegarLoopUtils]: For program point L68(lines 68 70) no Hoare annotation was computed. [2020-12-22 03:11:06,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:11:06 BoogieIcfgContainer [2020-12-22 03:11:06,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:11:06,038 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:11:06,038 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:11:06,038 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:11:06,039 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:10:57" (3/4) ... [2020-12-22 03:11:06,042 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 03:11:06,061 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-22 03:11:06,061 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 03:11:06,061 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 03:11:06,062 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 03:11:06,099 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/psyco/psyco_abp_1-3.c-witness.graphml [2020-12-22 03:11:06,099 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:11:06,101 INFO L168 Benchmark]: Toolchain (without parser) took 10531.22 ms. Allocated memory was 155.2 MB in the beginning and 267.4 MB in the end (delta: 112.2 MB). Free memory was 130.0 MB in the beginning and 138.6 MB in the end (delta: -8.6 MB). Peak memory consumption was 104.2 MB. Max. memory is 8.0 GB. [2020-12-22 03:11:06,101 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory was 127.9 MB in the beginning and 127.8 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:11:06,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 636.85 ms. Allocated memory is still 155.2 MB. Free memory was 129.7 MB in the beginning and 110.4 MB in the end (delta: 19.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-12-22 03:11:06,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 145.27 ms. Allocated memory is still 155.2 MB. Free memory was 110.4 MB in the beginning and 105.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-12-22 03:11:06,103 INFO L168 Benchmark]: Boogie Preprocessor took 171.89 ms. Allocated memory is still 155.2 MB. Free memory was 105.4 MB in the beginning and 134.7 MB in the end (delta: -29.2 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:11:06,104 INFO L168 Benchmark]: RCFGBuilder took 1109.69 ms. Allocated memory is still 155.2 MB. Free memory was 134.7 MB in the beginning and 82.2 MB in the end (delta: 52.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB. [2020-12-22 03:11:06,104 INFO L168 Benchmark]: TraceAbstraction took 8398.39 ms. Allocated memory was 155.2 MB in the beginning and 267.4 MB in the end (delta: 112.2 MB). Free memory was 81.7 MB in the beginning and 141.2 MB in the end (delta: -59.5 MB). Peak memory consumption was 53.2 MB. Max. memory is 8.0 GB. [2020-12-22 03:11:06,105 INFO L168 Benchmark]: Witness Printer took 61.28 ms. Allocated memory is still 267.4 MB. Free memory was 141.2 MB in the beginning and 138.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:11:06,108 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 155.2 MB. Free memory was 127.9 MB in the beginning and 127.8 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 636.85 ms. Allocated memory is still 155.2 MB. Free memory was 129.7 MB in the beginning and 110.4 MB in the end (delta: 19.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 145.27 ms. Allocated memory is still 155.2 MB. Free memory was 110.4 MB in the beginning and 105.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 171.89 ms. Allocated memory is still 155.2 MB. Free memory was 105.4 MB in the beginning and 134.7 MB in the end (delta: -29.2 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1109.69 ms. Allocated memory is still 155.2 MB. Free memory was 134.7 MB in the beginning and 82.2 MB in the end (delta: 52.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8398.39 ms. Allocated memory was 155.2 MB in the beginning and 267.4 MB in the end (delta: 112.2 MB). Free memory was 81.7 MB in the beginning and 141.2 MB in the end (delta: -59.5 MB). Peak memory consumption was 53.2 MB. Max. memory is 8.0 GB. * Witness Printer took 61.28 ms. Allocated memory is still 267.4 MB. Free memory was 141.2 MB in the beginning and 138.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 567]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((this_expect <= 2 * ((this_expect + -2) / 2) + 2 && 5 <= q) && 0 <= P8 + 2147483648) && this_buffer_empty == 0) && P8 / 4294967296 <= 0) || ((this_buffer_empty == 0 && q == 0) && this_expect == 0) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (((((((this_expect <= 2 * ((this_expect + -1) / 2) + 1 && 0 <= P8 + 2147483648) && P8 / 4294967296 <= 0) && q == 4) && this_buffer_empty == 1) || ((((this_expect <= 2 * ((this_expect + -2) / 2) + 2 && 5 <= q) && 0 <= P8 + 2147483648) && this_buffer_empty == 0) && P8 / 4294967296 <= 0)) || ((this_buffer_empty == 0 && q == 0) && this_expect == 0)) || ((((q == 1 && this_expect <= 2 * ((this_expect + -2) / 2) + 2) && 0 <= P8 + 2147483648) && P8 / 4294967296 <= 0) && this_buffer_empty == 1)) || ((((this_expect <= 2 * ((this_expect + -1) / 2) + 1 && 0 <= P8 + 2147483648) && q == 3) && this_buffer_empty == 0) && P8 / 4294967296 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 109 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.8s, OverallIterations: 14, TraceHistogramMax: 11, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2187 SDtfs, 1989 SDslu, 5138 SDs, 0 SdLazy, 842 SolverSat, 194 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 240 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=311occurred in iteration=7, 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, 67 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 24 NumberOfFragments, 164 HoareAnnotationTreeSize, 4 FomulaSimplifications, 763 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 596 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 709 NumberOfCodeBlocks, 709 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 691 ConstructedInterpolants, 0 QuantifiedInterpolants, 401906 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1695 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 18 InterpolantComputations, 10 PerfectInterpolantSequences, 234/759 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...