/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/sum04-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 14:54:02,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 14:54:02,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 14:54:02,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 14:54:02,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 14:54:02,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 14:54:02,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 14:54:02,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 14:54:02,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 14:54:02,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 14:54:02,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 14:54:02,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 14:54:02,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 14:54:02,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 14:54:02,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 14:54:02,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 14:54:02,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 14:54:02,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 14:54:02,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 14:54:02,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 14:54:02,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 14:54:02,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 14:54:02,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 14:54:02,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 14:54:02,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 14:54:02,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 14:54:02,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 14:54:02,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 14:54:02,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 14:54:02,239 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 14:54:02,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 14:54:02,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 14:54:02,245 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 14:54:02,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 14:54:02,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 14:54:02,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 14:54:02,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 14:54:02,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 14:54:02,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 14:54:02,249 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 14:54:02,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 14:54:02,249 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 14:54:02,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 14:54:02,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 14:54:02,250 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 14:54:02,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 14:54:02,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 14:54:02,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:54:02,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 14:54:02,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 14:54:02,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 14:54:02,251 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 14:54:02,597 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 14:54:02,614 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 14:54:02,619 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 14:54:02,621 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 14:54:02,622 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 14:54:02,623 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum04-2.i [2020-07-17 14:54:02,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a31508965/d1541f957e53419ca8fa0b044ef0eea0/FLAG0a3156fb2 [2020-07-17 14:54:03,363 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 14:54:03,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-2.i [2020-07-17 14:54:03,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a31508965/d1541f957e53419ca8fa0b044ef0eea0/FLAG0a3156fb2 [2020-07-17 14:54:03,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a31508965/d1541f957e53419ca8fa0b044ef0eea0 [2020-07-17 14:54:03,737 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 14:54:03,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 14:54:03,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 14:54:03,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 14:54:03,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 14:54:03,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:54:03" (1/1) ... [2020-07-17 14:54:03,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40581f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:03, skipping insertion in model container [2020-07-17 14:54:03,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:54:03" (1/1) ... [2020-07-17 14:54:03,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 14:54:03,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 14:54:04,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:54:04,057 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 14:54:04,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:54:04,095 INFO L208 MainTranslator]: Completed translation [2020-07-17 14:54:04,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:04 WrapperNode [2020-07-17 14:54:04,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 14:54:04,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 14:54:04,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 14:54:04,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 14:54:04,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:04" (1/1) ... [2020-07-17 14:54:04,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:04" (1/1) ... [2020-07-17 14:54:04,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:04" (1/1) ... [2020-07-17 14:54:04,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:04" (1/1) ... [2020-07-17 14:54:04,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:04" (1/1) ... [2020-07-17 14:54:04,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:04" (1/1) ... [2020-07-17 14:54:04,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:04" (1/1) ... [2020-07-17 14:54:04,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 14:54:04,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 14:54:04,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 14:54:04,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 14:54:04,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:54:04,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 14:54:04,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 14:54:04,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 14:54:04,338 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 14:54:04,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 14:54:04,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 14:54:04,339 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 14:54:04,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 14:54:04,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 14:54:04,557 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 14:54:04,558 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 14:54:04,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:54:04 BoogieIcfgContainer [2020-07-17 14:54:04,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 14:54:04,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 14:54:04,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 14:54:04,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 14:54:04,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 02:54:03" (1/3) ... [2020-07-17 14:54:04,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14294a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:54:04, skipping insertion in model container [2020-07-17 14:54:04,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:04" (2/3) ... [2020-07-17 14:54:04,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14294a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:54:04, skipping insertion in model container [2020-07-17 14:54:04,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:54:04" (3/3) ... [2020-07-17 14:54:04,577 INFO L109 eAbstractionObserver]: Analyzing ICFG sum04-2.i [2020-07-17 14:54:04,593 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 14:54:04,605 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 14:54:04,628 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 14:54:04,670 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 14:54:04,671 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 14:54:04,673 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 14:54:04,674 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 14:54:04,676 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 14:54:04,677 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 14:54:04,677 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 14:54:04,677 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 14:54:04,743 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-17 14:54:04,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-17 14:54:04,773 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:04,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:04,776 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:04,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:04,791 INFO L82 PathProgramCache]: Analyzing trace with hash 129992897, now seen corresponding path program 1 times [2020-07-17 14:54:04,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:04,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990398470] [2020-07-17 14:54:04,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:54:04,953 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:04,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990398470] [2020-07-17 14:54:04,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:54:04,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-17 14:54:04,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817052331] [2020-07-17 14:54:04,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-17 14:54:04,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:54:04,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-17 14:54:04,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 14:54:04,997 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-07-17 14:54:05,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:54:05,036 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2020-07-17 14:54:05,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-17 14:54:05,039 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-17 14:54:05,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:54:05,052 INFO L225 Difference]: With dead ends: 34 [2020-07-17 14:54:05,053 INFO L226 Difference]: Without dead ends: 17 [2020-07-17 14:54:05,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 14:54:05,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-17 14:54:05,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-07-17 14:54:05,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-17 14:54:05,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-07-17 14:54:05,121 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2020-07-17 14:54:05,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:54:05,122 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-07-17 14:54:05,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-17 14:54:05,122 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-07-17 14:54:05,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-17 14:54:05,123 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:05,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:05,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 14:54:05,125 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:05,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:05,126 INFO L82 PathProgramCache]: Analyzing trace with hash 121681208, now seen corresponding path program 1 times [2020-07-17 14:54:05,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:05,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219514013] [2020-07-17 14:54:05,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:54:05,202 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:05,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219514013] [2020-07-17 14:54:05,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:54:05,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 14:54:05,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628603581] [2020-07-17 14:54:05,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 14:54:05,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:54:05,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 14:54:05,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 14:54:05,207 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 3 states. [2020-07-17 14:54:05,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:54:05,246 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-07-17 14:54:05,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 14:54:05,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-07-17 14:54:05,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:54:05,251 INFO L225 Difference]: With dead ends: 26 [2020-07-17 14:54:05,251 INFO L226 Difference]: Without dead ends: 21 [2020-07-17 14:54:05,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 14:54:05,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-17 14:54:05,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2020-07-17 14:54:05,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-17 14:54:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-07-17 14:54:05,262 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2020-07-17 14:54:05,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:54:05,262 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-07-17 14:54:05,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 14:54:05,263 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-17 14:54:05,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-17 14:54:05,264 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:05,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:05,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 14:54:05,265 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:05,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:05,266 INFO L82 PathProgramCache]: Analyzing trace with hash -917865259, now seen corresponding path program 1 times [2020-07-17 14:54:05,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:05,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794022590] [2020-07-17 14:54:05,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:07,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:54:08,029 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:08,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794022590] [2020-07-17 14:54:08,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:54:08,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-17 14:54:08,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625519727] [2020-07-17 14:54:08,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 14:54:08,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:54:08,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 14:54:08,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-07-17 14:54:08,035 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 11 states. [2020-07-17 14:54:08,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:54:08,223 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-07-17 14:54:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 14:54:08,224 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-07-17 14:54:08,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:54:08,226 INFO L225 Difference]: With dead ends: 29 [2020-07-17 14:54:08,226 INFO L226 Difference]: Without dead ends: 24 [2020-07-17 14:54:08,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-07-17 14:54:08,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-17 14:54:08,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-07-17 14:54:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-17 14:54:08,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-07-17 14:54:08,238 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2020-07-17 14:54:08,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:54:08,239 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-07-17 14:54:08,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 14:54:08,239 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-17 14:54:08,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-17 14:54:08,240 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:08,241 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:08,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 14:54:08,242 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:08,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:08,243 INFO L82 PathProgramCache]: Analyzing trace with hash -2060587176, now seen corresponding path program 2 times [2020-07-17 14:54:08,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:08,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115086026] [2020-07-17 14:54:08,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:54:10,967 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:10,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115086026] [2020-07-17 14:54:10,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:54:10,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-17 14:54:10,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306459656] [2020-07-17 14:54:10,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-17 14:54:10,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:54:10,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-17 14:54:10,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-07-17 14:54:10,972 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 15 states. [2020-07-17 14:54:11,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:54:11,155 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-07-17 14:54:11,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 14:54:11,156 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2020-07-17 14:54:11,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:54:11,158 INFO L225 Difference]: With dead ends: 34 [2020-07-17 14:54:11,159 INFO L226 Difference]: Without dead ends: 29 [2020-07-17 14:54:11,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-07-17 14:54:11,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-17 14:54:11,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-07-17 14:54:11,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-17 14:54:11,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-07-17 14:54:11,171 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 22 [2020-07-17 14:54:11,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:54:11,172 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-07-17 14:54:11,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-17 14:54:11,172 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-07-17 14:54:11,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-17 14:54:11,173 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:11,174 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:11,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 14:54:11,175 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:11,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:11,175 INFO L82 PathProgramCache]: Analyzing trace with hash 657233589, now seen corresponding path program 3 times [2020-07-17 14:54:11,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:11,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429110247] [2020-07-17 14:54:11,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:54:14,018 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:14,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429110247] [2020-07-17 14:54:14,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:54:14,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-07-17 14:54:14,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898191942] [2020-07-17 14:54:14,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-17 14:54:14,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:54:14,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-17 14:54:14,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2020-07-17 14:54:14,022 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 19 states. [2020-07-17 14:54:14,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:54:14,261 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-07-17 14:54:14,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-17 14:54:14,262 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 27 [2020-07-17 14:54:14,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:54:14,263 INFO L225 Difference]: With dead ends: 39 [2020-07-17 14:54:14,264 INFO L226 Difference]: Without dead ends: 34 [2020-07-17 14:54:14,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2020-07-17 14:54:14,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-17 14:54:14,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-07-17 14:54:14,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-17 14:54:14,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-07-17 14:54:14,275 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 27 [2020-07-17 14:54:14,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:54:14,276 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-07-17 14:54:14,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-17 14:54:14,276 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-07-17 14:54:14,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-17 14:54:14,277 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:14,278 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:14,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 14:54:14,278 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:14,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:14,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1410268808, now seen corresponding path program 4 times [2020-07-17 14:54:14,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:14,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117876771] [2020-07-17 14:54:14,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:54:17,166 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:17,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117876771] [2020-07-17 14:54:17,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:54:17,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-07-17 14:54:17,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979652689] [2020-07-17 14:54:17,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-17 14:54:17,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:54:17,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-17 14:54:17,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2020-07-17 14:54:17,171 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 23 states. [2020-07-17 14:54:17,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:54:17,397 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-07-17 14:54:17,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-17 14:54:17,398 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 32 [2020-07-17 14:54:17,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:54:17,401 INFO L225 Difference]: With dead ends: 44 [2020-07-17 14:54:17,401 INFO L226 Difference]: Without dead ends: 39 [2020-07-17 14:54:17,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2020-07-17 14:54:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-17 14:54:17,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-07-17 14:54:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-17 14:54:17,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-07-17 14:54:17,424 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 32 [2020-07-17 14:54:17,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:54:17,425 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-07-17 14:54:17,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-17 14:54:17,425 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-07-17 14:54:17,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-17 14:54:17,433 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:17,434 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:17,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 14:54:17,435 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:17,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:17,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1340090219, now seen corresponding path program 5 times [2020-07-17 14:54:17,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:17,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704947437] [2020-07-17 14:54:17,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:19,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:54:20,520 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:20,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704947437] [2020-07-17 14:54:20,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:54:20,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-07-17 14:54:20,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500098523] [2020-07-17 14:54:20,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-17 14:54:20,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:54:20,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-17 14:54:20,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-07-17 14:54:20,525 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 27 states. [2020-07-17 14:54:20,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:54:20,819 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-07-17 14:54:20,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-17 14:54:20,822 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 37 [2020-07-17 14:54:20,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:54:20,823 INFO L225 Difference]: With dead ends: 49 [2020-07-17 14:54:20,823 INFO L226 Difference]: Without dead ends: 44 [2020-07-17 14:54:20,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2020-07-17 14:54:20,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-17 14:54:20,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-07-17 14:54:20,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-17 14:54:20,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-07-17 14:54:20,834 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 37 [2020-07-17 14:54:20,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:54:20,834 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-07-17 14:54:20,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-17 14:54:20,835 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-07-17 14:54:20,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-17 14:54:20,836 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:20,836 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:20,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 14:54:20,837 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:20,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:20,838 INFO L82 PathProgramCache]: Analyzing trace with hash 740027288, now seen corresponding path program 6 times [2020-07-17 14:54:20,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:20,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731605631] [2020-07-17 14:54:20,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:23,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:54:24,067 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:24,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731605631] [2020-07-17 14:54:24,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:54:24,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2020-07-17 14:54:24,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841201851] [2020-07-17 14:54:24,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-17 14:54:24,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:54:24,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-17 14:54:24,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-07-17 14:54:24,073 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 31 states. [2020-07-17 14:54:24,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:54:24,320 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-07-17 14:54:24,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-17 14:54:24,321 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 42 [2020-07-17 14:54:24,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:54:24,323 INFO L225 Difference]: With dead ends: 54 [2020-07-17 14:54:24,323 INFO L226 Difference]: Without dead ends: 49 [2020-07-17 14:54:24,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=206, Invalid=850, Unknown=0, NotChecked=0, Total=1056 [2020-07-17 14:54:24,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-17 14:54:24,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-07-17 14:54:24,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-17 14:54:24,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2020-07-17 14:54:24,344 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 42 [2020-07-17 14:54:24,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:54:24,345 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2020-07-17 14:54:24,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-17 14:54:24,345 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2020-07-17 14:54:24,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-17 14:54:24,346 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:24,347 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:24,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 14:54:24,347 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:24,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:24,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1053966965, now seen corresponding path program 7 times [2020-07-17 14:54:24,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:24,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468095908] [2020-07-17 14:54:24,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:26,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:54:27,845 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:27,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468095908] [2020-07-17 14:54:27,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:54:27,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2020-07-17 14:54:27,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137310696] [2020-07-17 14:54:27,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-07-17 14:54:27,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:54:27,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-07-17 14:54:27,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1014, Unknown=0, NotChecked=0, Total=1260 [2020-07-17 14:54:27,850 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 35 states. [2020-07-17 14:54:28,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:54:28,162 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2020-07-17 14:54:28,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-17 14:54:28,163 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 47 [2020-07-17 14:54:28,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:54:28,164 INFO L225 Difference]: With dead ends: 59 [2020-07-17 14:54:28,164 INFO L226 Difference]: Without dead ends: 54 [2020-07-17 14:54:28,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 7 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=258, Invalid=1074, Unknown=0, NotChecked=0, Total=1332 [2020-07-17 14:54:28,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-07-17 14:54:28,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-07-17 14:54:28,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-17 14:54:28,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2020-07-17 14:54:28,176 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 47 [2020-07-17 14:54:28,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:54:28,177 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2020-07-17 14:54:28,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-07-17 14:54:28,177 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2020-07-17 14:54:28,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-17 14:54:28,183 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:28,184 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:28,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 14:54:28,186 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:28,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:28,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1480544840, now seen corresponding path program 8 times [2020-07-17 14:54:28,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:28,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207160536] [2020-07-17 14:54:28,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:54:31,900 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:31,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207160536] [2020-07-17 14:54:31,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:54:31,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2020-07-17 14:54:31,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359276055] [2020-07-17 14:54:31,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-07-17 14:54:31,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:54:31,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-07-17 14:54:31,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1332, Unknown=0, NotChecked=0, Total=1640 [2020-07-17 14:54:31,905 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 39 states. [2020-07-17 14:54:32,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:54:32,228 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2020-07-17 14:54:32,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-07-17 14:54:32,229 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 52 [2020-07-17 14:54:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:54:32,230 INFO L225 Difference]: With dead ends: 53 [2020-07-17 14:54:32,230 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 14:54:32,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 7 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2020-07-17 14:54:32,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 14:54:32,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 14:54:32,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 14:54:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 14:54:32,232 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2020-07-17 14:54:32,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:54:32,233 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 14:54:32,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-07-17 14:54:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 14:54:32,233 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 14:54:32,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 14:54:32,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 14:54:32,650 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 14:54:32,650 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-17 14:54:32,651 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-17 14:54:32,651 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 14:54:32,651 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 14:54:32,651 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-17 14:54:32,651 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-07-17 14:54:32,651 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 11 17) the Hoare annotation is: true [2020-07-17 14:54:32,651 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (let ((.cse1 (* 2 main_~i~0)) (.cse0 (+ main_~sn~0 2))) (and (<= .cse0 .cse1) (<= main_~i~0 8) (<= .cse1 .cse0))) [2020-07-17 14:54:32,651 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (<= main_~sn~0 0) (<= 0 main_~sn~0)) [2020-07-17 14:54:32,652 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 11 17) the Hoare annotation is: true [2020-07-17 14:54:32,652 INFO L271 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-07-17 14:54:32,652 INFO L264 CegarLoopResult]: At program point L13-3(lines 13 15) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= main_~sn~0 .cse0) (<= main_~i~0 8) (<= .cse0 main_~sn~0))) [2020-07-17 14:54:32,652 INFO L264 CegarLoopResult]: At program point L13-4(line 13) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= main_~sn~0 .cse0) (<= main_~i~0 8) (<= .cse0 main_~sn~0) (= |main_#t~post0| main_~i~0))) [2020-07-17 14:54:32,652 INFO L264 CegarLoopResult]: At program point L13-5(line 13) the Hoare annotation is: (let ((.cse0 (* 2 |main_#t~post0|))) (and (<= main_~sn~0 .cse0) (= main_~i~0 (+ |main_#t~post0| 1)) (<= .cse0 main_~sn~0) (<= |main_#t~post0| 8))) [2020-07-17 14:54:32,653 INFO L264 CegarLoopResult]: At program point L13-6(lines 13 15) the Hoare annotation is: (let ((.cse1 (* 2 main_~i~0)) (.cse0 (+ main_~sn~0 2))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= main_~i~0 9))) [2020-07-17 14:54:32,653 INFO L264 CegarLoopResult]: At program point L13-7(lines 13 15) the Hoare annotation is: (let ((.cse1 (* 2 main_~i~0)) (.cse0 (+ main_~sn~0 2))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< 8 main_~i~0) (<= main_~i~0 9))) [2020-07-17 14:54:32,653 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-17 14:54:32,653 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 3 8) the Hoare annotation is: true [2020-07-17 14:54:32,654 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-17 14:54:32,654 INFO L264 CegarLoopResult]: At program point L4(lines 4 6) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-17 14:54:32,654 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-17 14:54:32,654 INFO L271 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2020-07-17 14:54:32,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 02:54:32 BoogieIcfgContainer [2020-07-17 14:54:32,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 14:54:32,686 INFO L168 Benchmark]: Toolchain (without parser) took 28945.60 ms. Allocated memory was 142.6 MB in the beginning and 308.3 MB in the end (delta: 165.7 MB). Free memory was 101.1 MB in the beginning and 201.9 MB in the end (delta: -100.9 MB). Peak memory consumption was 64.8 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:32,687 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 142.6 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 14:54:32,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.48 ms. Allocated memory is still 142.6 MB. Free memory was 100.7 MB in the beginning and 91.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:32,689 INFO L168 Benchmark]: Boogie Preprocessor took 146.82 ms. Allocated memory was 142.6 MB in the beginning and 201.9 MB in the end (delta: 59.2 MB). Free memory was 91.4 MB in the beginning and 182.0 MB in the end (delta: -90.5 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:32,690 INFO L168 Benchmark]: RCFGBuilder took 318.55 ms. Allocated memory is still 201.9 MB. Free memory was 182.0 MB in the beginning and 169.2 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:32,691 INFO L168 Benchmark]: TraceAbstraction took 28117.76 ms. Allocated memory was 201.9 MB in the beginning and 308.3 MB in the end (delta: 106.4 MB). Free memory was 169.2 MB in the beginning and 201.9 MB in the end (delta: -32.7 MB). Peak memory consumption was 73.7 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:32,696 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 142.6 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 353.48 ms. Allocated memory is still 142.6 MB. Free memory was 100.7 MB in the beginning and 91.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.82 ms. Allocated memory was 142.6 MB in the beginning and 201.9 MB in the end (delta: 59.2 MB). Free memory was 91.4 MB in the beginning and 182.0 MB in the end (delta: -90.5 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 318.55 ms. Allocated memory is still 201.9 MB. Free memory was 182.0 MB in the beginning and 169.2 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28117.76 ms. Allocated memory was 201.9 MB in the beginning and 308.3 MB in the end (delta: 106.4 MB). Free memory was 169.2 MB in the beginning and 201.9 MB in the end (delta: -32.7 MB). Peak memory consumption was 73.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 13]: Loop Invariant Derived loop invariant: (sn + 2 <= 2 * i && 2 * i <= sn + 2) && i <= 9 - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 3]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 27.5s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 138 SDtfs, 112 SDslu, 1078 SDs, 0 SdLazy, 974 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 311 GetRequests, 65 SyntacticMatches, 43 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1728 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 10 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 23 LocationsWithAnnotation, 77 PreInvPairs, 136 NumberOfFragments, 141 HoareAnnotationTreeSize, 77 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 23 FomulaSimplificationsInter, 622 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...