/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:25:06,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:25:06,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:25:06,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:25:06,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:25:06,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:25:06,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:25:06,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:25:06,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:25:06,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:25:06,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:25:06,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:25:06,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:25:06,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:25:06,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:25:06,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:25:06,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:25:06,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:25:06,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:25:06,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:25:06,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:25:06,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:25:06,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:25:06,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:25:06,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:25:06,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:25:06,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:25:06,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:25:06,173 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:25:06,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:25:06,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:25:06,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:25:06,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:25:06,220 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:25:06,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:25:06,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:25:06,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:25:06,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:25:06,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:25:06,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:25:06,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:25:06,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:25:06,223 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:25:06,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:25:06,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:25:06,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:25:06,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:25:06,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:25:06,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:25:06,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:25:06,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:25:06,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:25:06,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:25:06,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:25:06,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:25:06,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:25:06,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:25:06,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:25:06,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:25:06,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:25:06,742 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:25:06,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:25:06,748 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:25:06,748 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:25:06,749 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2020-09-04 13:25:06,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/415f86e9e/84717fad2a6f4dd2851b2ec6f6c5823c/FLAG0d82b5e0c [2020-09-04 13:25:07,450 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:25:07,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_6.c [2020-09-04 13:25:07,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/415f86e9e/84717fad2a6f4dd2851b2ec6f6c5823c/FLAG0d82b5e0c [2020-09-04 13:25:07,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/415f86e9e/84717fad2a6f4dd2851b2ec6f6c5823c [2020-09-04 13:25:07,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:25:07,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:25:07,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:25:07,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:25:07,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:25:07,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:25:07" (1/1) ... [2020-09-04 13:25:07,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ae4bde5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:07, skipping insertion in model container [2020-09-04 13:25:07,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:25:07" (1/1) ... [2020-09-04 13:25:07,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:25:07,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:25:08,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:25:08,071 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:25:08,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:25:08,112 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:25:08,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:08 WrapperNode [2020-09-04 13:25:08,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:25:08,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:25:08,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:25:08,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:25:08,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:08" (1/1) ... [2020-09-04 13:25:08,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:08" (1/1) ... [2020-09-04 13:25:08,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:08" (1/1) ... [2020-09-04 13:25:08,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:08" (1/1) ... [2020-09-04 13:25:08,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:08" (1/1) ... [2020-09-04 13:25:08,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:08" (1/1) ... [2020-09-04 13:25:08,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:08" (1/1) ... [2020-09-04 13:25:08,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:25:08,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:25:08,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:25:08,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:25:08,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:25:08,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:25:08,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:25:08,319 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:25:08,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:25:08,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:25:08,320 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:25:08,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:25:08,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:25:08,610 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:25:08,610 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 13:25:08,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:25:08 BoogieIcfgContainer [2020-09-04 13:25:08,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:25:08,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:25:08,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:25:08,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:25:08,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:25:07" (1/3) ... [2020-09-04 13:25:08,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68df9cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:25:08, skipping insertion in model container [2020-09-04 13:25:08,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:08" (2/3) ... [2020-09-04 13:25:08,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68df9cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:25:08, skipping insertion in model container [2020-09-04 13:25:08,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:25:08" (3/3) ... [2020-09-04 13:25:08,628 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-09-04 13:25:08,646 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:25:08,658 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:25:08,685 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:25:08,723 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:25:08,723 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:25:08,724 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:25:08,724 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:25:08,724 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:25:08,724 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:25:08,724 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:25:08,725 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:25:08,752 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-09-04 13:25:08,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 13:25:08,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:08,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:08,764 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:08,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:08,773 INFO L82 PathProgramCache]: Analyzing trace with hash 429652513, now seen corresponding path program 1 times [2020-09-04 13:25:08,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:08,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485886505] [2020-09-04 13:25:08,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:09,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:09,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:09,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485886505] [2020-09-04 13:25:09,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:09,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:09,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970583306] [2020-09-04 13:25:09,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:09,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:09,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:09,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:09,063 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-09-04 13:25:09,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:09,140 INFO L93 Difference]: Finished difference Result 63 states and 102 transitions. [2020-09-04 13:25:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:09,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-04 13:25:09,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:09,164 INFO L225 Difference]: With dead ends: 63 [2020-09-04 13:25:09,164 INFO L226 Difference]: Without dead ends: 48 [2020-09-04 13:25:09,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:09,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-04 13:25:09,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2020-09-04 13:25:09,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-04 13:25:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 57 transitions. [2020-09-04 13:25:09,219 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 57 transitions. Word has length 16 [2020-09-04 13:25:09,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:09,219 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 57 transitions. [2020-09-04 13:25:09,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:09,220 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 57 transitions. [2020-09-04 13:25:09,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 13:25:09,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:09,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:09,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:25:09,222 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:09,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:09,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1109710883, now seen corresponding path program 1 times [2020-09-04 13:25:09,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:09,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519546177] [2020-09-04 13:25:09,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:09,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:09,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519546177] [2020-09-04 13:25:09,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:09,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:09,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654092159] [2020-09-04 13:25:09,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:09,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:09,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:09,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:09,293 INFO L87 Difference]: Start difference. First operand 34 states and 57 transitions. Second operand 3 states. [2020-09-04 13:25:09,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:09,319 INFO L93 Difference]: Finished difference Result 77 states and 132 transitions. [2020-09-04 13:25:09,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:09,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-04 13:25:09,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:09,322 INFO L225 Difference]: With dead ends: 77 [2020-09-04 13:25:09,322 INFO L226 Difference]: Without dead ends: 48 [2020-09-04 13:25:09,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:09,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-04 13:25:09,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-09-04 13:25:09,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-04 13:25:09,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 77 transitions. [2020-09-04 13:25:09,333 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 77 transitions. Word has length 16 [2020-09-04 13:25:09,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:09,334 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 77 transitions. [2020-09-04 13:25:09,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:09,334 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 77 transitions. [2020-09-04 13:25:09,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-04 13:25:09,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:09,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:09,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:25:09,336 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:09,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:09,337 INFO L82 PathProgramCache]: Analyzing trace with hash 434540691, now seen corresponding path program 1 times [2020-09-04 13:25:09,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:09,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500186881] [2020-09-04 13:25:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:09,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:09,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500186881] [2020-09-04 13:25:09,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:09,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:09,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396928482] [2020-09-04 13:25:09,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:09,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:09,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:09,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:09,416 INFO L87 Difference]: Start difference. First operand 46 states and 77 transitions. Second operand 3 states. [2020-09-04 13:25:09,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:09,446 INFO L93 Difference]: Finished difference Result 72 states and 117 transitions. [2020-09-04 13:25:09,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:09,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-04 13:25:09,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:09,449 INFO L225 Difference]: With dead ends: 72 [2020-09-04 13:25:09,449 INFO L226 Difference]: Without dead ends: 51 [2020-09-04 13:25:09,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:09,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-04 13:25:09,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-09-04 13:25:09,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-04 13:25:09,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2020-09-04 13:25:09,462 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 79 transitions. Word has length 17 [2020-09-04 13:25:09,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:09,463 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 79 transitions. [2020-09-04 13:25:09,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:09,463 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 79 transitions. [2020-09-04 13:25:09,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-04 13:25:09,465 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:09,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:09,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:25:09,466 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:09,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:09,468 INFO L82 PathProgramCache]: Analyzing trace with hash 41513681, now seen corresponding path program 1 times [2020-09-04 13:25:09,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:09,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281229963] [2020-09-04 13:25:09,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:09,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:09,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281229963] [2020-09-04 13:25:09,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:09,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:09,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720461622] [2020-09-04 13:25:09,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:09,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:09,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:09,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:09,546 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. Second operand 3 states. [2020-09-04 13:25:09,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:09,582 INFO L93 Difference]: Finished difference Result 88 states and 144 transitions. [2020-09-04 13:25:09,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:09,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-04 13:25:09,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:09,588 INFO L225 Difference]: With dead ends: 88 [2020-09-04 13:25:09,588 INFO L226 Difference]: Without dead ends: 86 [2020-09-04 13:25:09,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:09,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-04 13:25:09,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2020-09-04 13:25:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-04 13:25:09,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 104 transitions. [2020-09-04 13:25:09,609 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 104 transitions. Word has length 17 [2020-09-04 13:25:09,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:09,610 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 104 transitions. [2020-09-04 13:25:09,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:09,610 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 104 transitions. [2020-09-04 13:25:09,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-04 13:25:09,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:09,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:09,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 13:25:09,613 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:09,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:09,614 INFO L82 PathProgramCache]: Analyzing trace with hash 721572051, now seen corresponding path program 1 times [2020-09-04 13:25:09,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:09,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806659039] [2020-09-04 13:25:09,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:09,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:09,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806659039] [2020-09-04 13:25:09,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:09,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:09,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278344388] [2020-09-04 13:25:09,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:09,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:09,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:09,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:09,680 INFO L87 Difference]: Start difference. First operand 64 states and 104 transitions. Second operand 3 states. [2020-09-04 13:25:09,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:09,702 INFO L93 Difference]: Finished difference Result 144 states and 238 transitions. [2020-09-04 13:25:09,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:09,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-04 13:25:09,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:09,705 INFO L225 Difference]: With dead ends: 144 [2020-09-04 13:25:09,705 INFO L226 Difference]: Without dead ends: 88 [2020-09-04 13:25:09,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:09,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-04 13:25:09,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-09-04 13:25:09,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-04 13:25:09,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 138 transitions. [2020-09-04 13:25:09,716 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 138 transitions. Word has length 17 [2020-09-04 13:25:09,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:09,717 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 138 transitions. [2020-09-04 13:25:09,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:09,717 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 138 transitions. [2020-09-04 13:25:09,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-04 13:25:09,718 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:09,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:09,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 13:25:09,719 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:09,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:09,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1287139128, now seen corresponding path program 1 times [2020-09-04 13:25:09,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:09,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860244905] [2020-09-04 13:25:09,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:09,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:09,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860244905] [2020-09-04 13:25:09,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:09,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:09,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210988181] [2020-09-04 13:25:09,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:09,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:09,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:09,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:09,776 INFO L87 Difference]: Start difference. First operand 86 states and 138 transitions. Second operand 3 states. [2020-09-04 13:25:09,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:09,812 INFO L93 Difference]: Finished difference Result 129 states and 205 transitions. [2020-09-04 13:25:09,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:09,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-04 13:25:09,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:09,814 INFO L225 Difference]: With dead ends: 129 [2020-09-04 13:25:09,815 INFO L226 Difference]: Without dead ends: 90 [2020-09-04 13:25:09,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:09,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-04 13:25:09,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-09-04 13:25:09,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-04 13:25:09,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 138 transitions. [2020-09-04 13:25:09,826 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 138 transitions. Word has length 18 [2020-09-04 13:25:09,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:09,826 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 138 transitions. [2020-09-04 13:25:09,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:09,827 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 138 transitions. [2020-09-04 13:25:09,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-04 13:25:09,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:09,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:09,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 13:25:09,829 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:09,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:09,829 INFO L82 PathProgramCache]: Analyzing trace with hash 894112118, now seen corresponding path program 1 times [2020-09-04 13:25:09,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:09,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059151489] [2020-09-04 13:25:09,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:09,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:09,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059151489] [2020-09-04 13:25:09,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:09,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:09,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485808519] [2020-09-04 13:25:09,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:09,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:09,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:09,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:09,866 INFO L87 Difference]: Start difference. First operand 88 states and 138 transitions. Second operand 3 states. [2020-09-04 13:25:09,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:09,891 INFO L93 Difference]: Finished difference Result 156 states and 248 transitions. [2020-09-04 13:25:09,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:09,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-04 13:25:09,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:09,893 INFO L225 Difference]: With dead ends: 156 [2020-09-04 13:25:09,894 INFO L226 Difference]: Without dead ends: 154 [2020-09-04 13:25:09,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:09,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-04 13:25:09,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-09-04 13:25:09,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-04 13:25:09,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 186 transitions. [2020-09-04 13:25:09,909 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 186 transitions. Word has length 18 [2020-09-04 13:25:09,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:09,910 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 186 transitions. [2020-09-04 13:25:09,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:09,910 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 186 transitions. [2020-09-04 13:25:09,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-04 13:25:09,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:09,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:09,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 13:25:09,912 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:09,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:09,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1574170488, now seen corresponding path program 1 times [2020-09-04 13:25:09,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:09,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416258897] [2020-09-04 13:25:09,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:09,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:09,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:09,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416258897] [2020-09-04 13:25:09,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:09,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:09,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079582084] [2020-09-04 13:25:09,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:09,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:09,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:09,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:09,952 INFO L87 Difference]: Start difference. First operand 120 states and 186 transitions. Second operand 3 states. [2020-09-04 13:25:09,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:09,988 INFO L93 Difference]: Finished difference Result 272 states and 424 transitions. [2020-09-04 13:25:09,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:09,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-04 13:25:09,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:09,991 INFO L225 Difference]: With dead ends: 272 [2020-09-04 13:25:09,991 INFO L226 Difference]: Without dead ends: 162 [2020-09-04 13:25:09,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:09,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-04 13:25:10,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2020-09-04 13:25:10,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-04 13:25:10,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 242 transitions. [2020-09-04 13:25:10,026 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 242 transitions. Word has length 18 [2020-09-04 13:25:10,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:10,026 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 242 transitions. [2020-09-04 13:25:10,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:10,027 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 242 transitions. [2020-09-04 13:25:10,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 13:25:10,028 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:10,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:10,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 13:25:10,029 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:10,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:10,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1947887240, now seen corresponding path program 1 times [2020-09-04 13:25:10,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:10,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249284644] [2020-09-04 13:25:10,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:10,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:10,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249284644] [2020-09-04 13:25:10,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:10,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:10,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817701619] [2020-09-04 13:25:10,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:10,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:10,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:10,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:10,075 INFO L87 Difference]: Start difference. First operand 160 states and 242 transitions. Second operand 3 states. [2020-09-04 13:25:10,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:10,109 INFO L93 Difference]: Finished difference Result 240 states and 360 transitions. [2020-09-04 13:25:10,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:10,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-04 13:25:10,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:10,110 INFO L225 Difference]: With dead ends: 240 [2020-09-04 13:25:10,111 INFO L226 Difference]: Without dead ends: 166 [2020-09-04 13:25:10,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:10,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-04 13:25:10,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-09-04 13:25:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-04 13:25:10,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 242 transitions. [2020-09-04 13:25:10,138 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 242 transitions. Word has length 19 [2020-09-04 13:25:10,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:10,138 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 242 transitions. [2020-09-04 13:25:10,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:10,139 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 242 transitions. [2020-09-04 13:25:10,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 13:25:10,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:10,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:10,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 13:25:10,141 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:10,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:10,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1554860230, now seen corresponding path program 1 times [2020-09-04 13:25:10,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:10,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426484196] [2020-09-04 13:25:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:10,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:10,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426484196] [2020-09-04 13:25:10,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:10,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:10,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567552473] [2020-09-04 13:25:10,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:10,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:10,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:10,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:10,200 INFO L87 Difference]: Start difference. First operand 164 states and 242 transitions. Second operand 3 states. [2020-09-04 13:25:10,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:10,237 INFO L93 Difference]: Finished difference Result 284 states and 424 transitions. [2020-09-04 13:25:10,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:10,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-04 13:25:10,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:10,240 INFO L225 Difference]: With dead ends: 284 [2020-09-04 13:25:10,240 INFO L226 Difference]: Without dead ends: 282 [2020-09-04 13:25:10,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:10,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-04 13:25:10,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 232. [2020-09-04 13:25:10,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-09-04 13:25:10,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 334 transitions. [2020-09-04 13:25:10,254 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 334 transitions. Word has length 19 [2020-09-04 13:25:10,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:10,254 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 334 transitions. [2020-09-04 13:25:10,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:10,254 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 334 transitions. [2020-09-04 13:25:10,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 13:25:10,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:10,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:10,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 13:25:10,257 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:10,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:10,257 INFO L82 PathProgramCache]: Analyzing trace with hash -2060048696, now seen corresponding path program 1 times [2020-09-04 13:25:10,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:10,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733756531] [2020-09-04 13:25:10,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:10,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:10,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:10,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733756531] [2020-09-04 13:25:10,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:10,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:10,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711524255] [2020-09-04 13:25:10,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:10,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:10,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:10,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:10,286 INFO L87 Difference]: Start difference. First operand 232 states and 334 transitions. Second operand 3 states. [2020-09-04 13:25:10,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:10,315 INFO L93 Difference]: Finished difference Result 524 states and 752 transitions. [2020-09-04 13:25:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:10,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-04 13:25:10,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:10,318 INFO L225 Difference]: With dead ends: 524 [2020-09-04 13:25:10,318 INFO L226 Difference]: Without dead ends: 306 [2020-09-04 13:25:10,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:10,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-04 13:25:10,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2020-09-04 13:25:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-09-04 13:25:10,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 422 transitions. [2020-09-04 13:25:10,332 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 422 transitions. Word has length 19 [2020-09-04 13:25:10,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:10,333 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 422 transitions. [2020-09-04 13:25:10,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:10,333 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 422 transitions. [2020-09-04 13:25:10,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-04 13:25:10,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:10,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:10,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 13:25:10,335 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:10,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:10,336 INFO L82 PathProgramCache]: Analyzing trace with hash 956242573, now seen corresponding path program 1 times [2020-09-04 13:25:10,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:10,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762570263] [2020-09-04 13:25:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:10,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:10,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:10,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762570263] [2020-09-04 13:25:10,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:10,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:10,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586310467] [2020-09-04 13:25:10,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:10,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:10,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:10,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:10,364 INFO L87 Difference]: Start difference. First operand 304 states and 422 transitions. Second operand 3 states. [2020-09-04 13:25:10,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:10,384 INFO L93 Difference]: Finished difference Result 456 states and 628 transitions. [2020-09-04 13:25:10,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:10,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-09-04 13:25:10,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:10,387 INFO L225 Difference]: With dead ends: 456 [2020-09-04 13:25:10,387 INFO L226 Difference]: Without dead ends: 314 [2020-09-04 13:25:10,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:10,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-09-04 13:25:10,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2020-09-04 13:25:10,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-09-04 13:25:10,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 422 transitions. [2020-09-04 13:25:10,401 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 422 transitions. Word has length 20 [2020-09-04 13:25:10,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:10,402 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 422 transitions. [2020-09-04 13:25:10,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:10,402 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 422 transitions. [2020-09-04 13:25:10,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-04 13:25:10,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:10,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:10,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 13:25:10,404 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:10,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:10,405 INFO L82 PathProgramCache]: Analyzing trace with hash 563215563, now seen corresponding path program 1 times [2020-09-04 13:25:10,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:10,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757232912] [2020-09-04 13:25:10,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:10,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:10,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757232912] [2020-09-04 13:25:10,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:10,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:10,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939575042] [2020-09-04 13:25:10,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:10,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:10,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:10,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:10,432 INFO L87 Difference]: Start difference. First operand 312 states and 422 transitions. Second operand 3 states. [2020-09-04 13:25:10,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:10,454 INFO L93 Difference]: Finished difference Result 524 states and 712 transitions. [2020-09-04 13:25:10,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:10,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-09-04 13:25:10,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:10,458 INFO L225 Difference]: With dead ends: 524 [2020-09-04 13:25:10,458 INFO L226 Difference]: Without dead ends: 522 [2020-09-04 13:25:10,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:10,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-09-04 13:25:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 456. [2020-09-04 13:25:10,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-09-04 13:25:10,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 598 transitions. [2020-09-04 13:25:10,476 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 598 transitions. Word has length 20 [2020-09-04 13:25:10,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:10,476 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 598 transitions. [2020-09-04 13:25:10,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:10,477 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 598 transitions. [2020-09-04 13:25:10,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-04 13:25:10,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:10,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:10,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 13:25:10,479 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:10,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:10,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1243273933, now seen corresponding path program 1 times [2020-09-04 13:25:10,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:10,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21359551] [2020-09-04 13:25:10,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:10,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:10,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:10,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21359551] [2020-09-04 13:25:10,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:10,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:10,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082251904] [2020-09-04 13:25:10,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:10,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:10,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:10,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:10,507 INFO L87 Difference]: Start difference. First operand 456 states and 598 transitions. Second operand 3 states. [2020-09-04 13:25:10,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:10,535 INFO L93 Difference]: Finished difference Result 1020 states and 1320 transitions. [2020-09-04 13:25:10,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:10,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-09-04 13:25:10,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:10,539 INFO L225 Difference]: With dead ends: 1020 [2020-09-04 13:25:10,539 INFO L226 Difference]: Without dead ends: 586 [2020-09-04 13:25:10,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:10,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-09-04 13:25:10,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 584. [2020-09-04 13:25:10,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-09-04 13:25:10,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 726 transitions. [2020-09-04 13:25:10,565 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 726 transitions. Word has length 20 [2020-09-04 13:25:10,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:10,565 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 726 transitions. [2020-09-04 13:25:10,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:10,565 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 726 transitions. [2020-09-04 13:25:10,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 13:25:10,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:10,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:10,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 13:25:10,567 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:10,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:10,568 INFO L82 PathProgramCache]: Analyzing trace with hash 280029309, now seen corresponding path program 1 times [2020-09-04 13:25:10,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:10,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284255793] [2020-09-04 13:25:10,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:10,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:10,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284255793] [2020-09-04 13:25:10,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:10,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:10,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326345582] [2020-09-04 13:25:10,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:10,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:10,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:10,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:10,593 INFO L87 Difference]: Start difference. First operand 584 states and 726 transitions. Second operand 3 states. [2020-09-04 13:25:10,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:10,619 INFO L93 Difference]: Finished difference Result 876 states and 1080 transitions. [2020-09-04 13:25:10,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:10,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-04 13:25:10,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:10,624 INFO L225 Difference]: With dead ends: 876 [2020-09-04 13:25:10,624 INFO L226 Difference]: Without dead ends: 602 [2020-09-04 13:25:10,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:10,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-09-04 13:25:10,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2020-09-04 13:25:10,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-09-04 13:25:10,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 726 transitions. [2020-09-04 13:25:10,649 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 726 transitions. Word has length 21 [2020-09-04 13:25:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:10,650 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 726 transitions. [2020-09-04 13:25:10,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 726 transitions. [2020-09-04 13:25:10,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 13:25:10,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:10,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:10,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 13:25:10,652 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:10,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:10,653 INFO L82 PathProgramCache]: Analyzing trace with hash -112997701, now seen corresponding path program 1 times [2020-09-04 13:25:10,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:10,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442044051] [2020-09-04 13:25:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:10,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:10,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:10,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442044051] [2020-09-04 13:25:10,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:10,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:10,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034828786] [2020-09-04 13:25:10,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:10,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:10,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:10,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:10,678 INFO L87 Difference]: Start difference. First operand 600 states and 726 transitions. Second operand 3 states. [2020-09-04 13:25:10,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:10,715 INFO L93 Difference]: Finished difference Result 970 states and 1159 transitions. [2020-09-04 13:25:10,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:10,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-04 13:25:10,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:10,721 INFO L225 Difference]: With dead ends: 970 [2020-09-04 13:25:10,721 INFO L226 Difference]: Without dead ends: 968 [2020-09-04 13:25:10,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:10,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-09-04 13:25:10,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 904. [2020-09-04 13:25:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-09-04 13:25:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1062 transitions. [2020-09-04 13:25:10,757 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1062 transitions. Word has length 21 [2020-09-04 13:25:10,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:10,758 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1062 transitions. [2020-09-04 13:25:10,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:10,758 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1062 transitions. [2020-09-04 13:25:10,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 13:25:10,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:10,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:10,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 13:25:10,761 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:10,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:10,762 INFO L82 PathProgramCache]: Analyzing trace with hash 567060669, now seen corresponding path program 1 times [2020-09-04 13:25:10,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:10,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455719764] [2020-09-04 13:25:10,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:10,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:10,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:10,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455719764] [2020-09-04 13:25:10,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:10,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:10,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415258551] [2020-09-04 13:25:10,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:10,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:10,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:10,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:10,788 INFO L87 Difference]: Start difference. First operand 904 states and 1062 transitions. Second operand 3 states. [2020-09-04 13:25:10,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:10,831 INFO L93 Difference]: Finished difference Result 1992 states and 2278 transitions. [2020-09-04 13:25:10,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:10,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-04 13:25:10,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:10,833 INFO L225 Difference]: With dead ends: 1992 [2020-09-04 13:25:10,833 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:25:10,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:10,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:25:10,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:25:10,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:25:10,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:25:10,838 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-09-04 13:25:10,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:10,838 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:25:10,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:10,839 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:25:10,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:25:10,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 13:25:10,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:25:10,867 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 13:25:10,868 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:25:10,868 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:25:10,868 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 13:25:10,868 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:25:10,868 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:25:10,868 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-09-04 13:25:10,869 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed. [2020-09-04 13:25:10,869 INFO L268 CegarLoopResult]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2020-09-04 13:25:10,869 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-09-04 13:25:10,869 INFO L271 CegarLoopResult]: At program point L103(lines 5 107) the Hoare annotation is: true [2020-09-04 13:25:10,869 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-09-04 13:25:10,869 INFO L268 CegarLoopResult]: For program point L62-1(lines 27 102) no Hoare annotation was computed. [2020-09-04 13:25:10,870 INFO L268 CegarLoopResult]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2020-09-04 13:25:10,870 INFO L268 CegarLoopResult]: For program point L54-1(lines 27 102) no Hoare annotation was computed. [2020-09-04 13:25:10,870 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-09-04 13:25:10,870 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed. [2020-09-04 13:25:10,870 INFO L268 CegarLoopResult]: For program point L46-2(lines 27 102) no Hoare annotation was computed. [2020-09-04 13:25:10,871 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2020-09-04 13:25:10,871 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true [2020-09-04 13:25:10,871 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-09-04 13:25:10,871 INFO L268 CegarLoopResult]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2020-09-04 13:25:10,871 INFO L271 CegarLoopResult]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2020-09-04 13:25:10,872 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-09-04 13:25:10,872 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-09-04 13:25:10,872 INFO L264 CegarLoopResult]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2020-09-04 13:25:10,872 INFO L268 CegarLoopResult]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2020-09-04 13:25:10,872 INFO L268 CegarLoopResult]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2020-09-04 13:25:10,873 INFO L268 CegarLoopResult]: For program point L58-1(lines 27 102) no Hoare annotation was computed. [2020-09-04 13:25:10,874 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-09-04 13:25:10,874 INFO L268 CegarLoopResult]: For program point L50-1(lines 27 102) no Hoare annotation was computed. [2020-09-04 13:25:10,874 INFO L268 CegarLoopResult]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2020-09-04 13:25:10,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:25:10 BoogieIcfgContainer [2020-09-04 13:25:10,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:25:10,893 INFO L168 Benchmark]: Toolchain (without parser) took 3122.24 ms. Allocated memory was 138.9 MB in the beginning and 232.8 MB in the end (delta: 93.8 MB). Free memory was 102.5 MB in the beginning and 78.8 MB in the end (delta: 23.7 MB). Peak memory consumption was 117.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:25:10,895 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:25:10,896 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.97 ms. Allocated memory is still 138.9 MB. Free memory was 102.3 MB in the beginning and 92.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-04 13:25:10,897 INFO L168 Benchmark]: Boogie Preprocessor took 132.67 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 92.2 MB in the beginning and 178.2 MB in the end (delta: -86.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:25:10,898 INFO L168 Benchmark]: RCFGBuilder took 369.71 ms. Allocated memory is still 200.3 MB. Free memory was 178.2 MB in the beginning and 163.0 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:25:10,898 INFO L168 Benchmark]: TraceAbstraction took 2268.82 ms. Allocated memory was 200.3 MB in the beginning and 232.8 MB in the end (delta: 32.5 MB). Free memory was 162.3 MB in the beginning and 78.8 MB in the end (delta: 83.5 MB). Peak memory consumption was 116.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:25:10,911 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 344.97 ms. Allocated memory is still 138.9 MB. Free memory was 102.3 MB in the beginning and 92.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.67 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 92.2 MB in the beginning and 178.2 MB in the end (delta: -86.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 369.71 ms. Allocated memory is still 200.3 MB. Free memory was 178.2 MB in the beginning and 163.0 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2268.82 ms. Allocated memory was 200.3 MB in the beginning and 232.8 MB in the end (delta: 32.5 MB). Free memory was 162.3 MB in the beginning and 78.8 MB in the end (delta: 83.5 MB). Peak memory consumption was 116.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 105]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 923 SDtfs, 417 SDslu, 612 SDs, 0 SdLazy, 91 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 270 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 74 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 9690 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 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...