/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_security.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:34:58,189 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-18 19:34:58,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:34:58,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:34:58,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:34:58,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:34:58,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:34:58,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:34:58,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:34:58,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:34:58,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:34:58,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:34:58,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:34:58,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:34:58,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:34:58,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:34:58,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:34:58,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:34:58,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:34:58,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:34:58,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:34:58,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:34:58,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 19:34:58,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:34:58,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:34:58,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:34:58,314 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 [2020-08-18 19:34:58,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:34:58,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:34:58,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:34:58,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:34:58,358 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:34:58,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:34:58,358 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:34:58,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:34:58,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:34:58,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:34:58,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:34:58,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:34:58,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:34:58,360 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:34:58,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:34:58,361 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:34:58,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:34:58,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:34:58,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:34:58,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:34:58,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:34:58,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:34:58,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:34:58,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:34:58,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:34:58,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:34:58,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:34:58,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:34:58,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:34:58,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:34:58,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:34:58,689 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:34:58,692 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:34:58,694 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:34:58,694 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:34:58,695 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2020-08-18 19:34:58,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d661f008e/6c97cc38ad744da893e4ebe428f22aa1/FLAGa84f62f20 [2020-08-18 19:34:59,259 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:34:59,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_security.c [2020-08-18 19:34:59,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d661f008e/6c97cc38ad744da893e4ebe428f22aa1/FLAGa84f62f20 [2020-08-18 19:34:59,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d661f008e/6c97cc38ad744da893e4ebe428f22aa1 [2020-08-18 19:34:59,633 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:34:59,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:34:59,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:34:59,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:34:59,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:34:59,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:34:59" (1/1) ... [2020-08-18 19:34:59,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a0b5c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:34:59, skipping insertion in model container [2020-08-18 19:34:59,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:34:59" (1/1) ... [2020-08-18 19:34:59,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:34:59,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:34:59,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:34:59,975 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:35:00,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:35:00,136 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:35:00,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:35:00 WrapperNode [2020-08-18 19:35:00,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:35:00,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:35:00,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:35:00,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:35:00,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:35:00" (1/1) ... [2020-08-18 19:35:00,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:35:00" (1/1) ... [2020-08-18 19:35:00,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:35:00" (1/1) ... [2020-08-18 19:35:00,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:35:00" (1/1) ... [2020-08-18 19:35:00,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:35:00" (1/1) ... [2020-08-18 19:35:00,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:35:00" (1/1) ... [2020-08-18 19:35:00,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:35:00" (1/1) ... [2020-08-18 19:35:00,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:35:00,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:35:00,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:35:00,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:35:00,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:35:00" (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 [2020-08-18 19:35:00,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:35:00,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:35:00,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:35:00,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:35:00,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:35:00,257 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:35:00,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:35:00,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:35:00,723 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:35:00,723 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-08-18 19:35:00,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:35:00 BoogieIcfgContainer [2020-08-18 19:35:00,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:35:00,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:35:00,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:35:00,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:35:00,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:34:59" (1/3) ... [2020-08-18 19:35:00,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58397fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:35:00, skipping insertion in model container [2020-08-18 19:35:00,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:35:00" (2/3) ... [2020-08-18 19:35:00,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58397fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:35:00, skipping insertion in model container [2020-08-18 19:35:00,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:35:00" (3/3) ... [2020-08-18 19:35:00,736 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-08-18 19:35:00,747 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:35:00,756 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:35:00,770 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:35:00,793 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:35:00,793 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:35:00,794 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:35:00,794 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:35:00,794 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:35:00,795 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:35:00,795 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:35:00,795 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:35:00,816 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-08-18 19:35:00,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-18 19:35:00,823 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:35:00,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:35:00,824 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:35:00,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:35:00,831 INFO L82 PathProgramCache]: Analyzing trace with hash -105811556, now seen corresponding path program 1 times [2020-08-18 19:35:00,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:35:00,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200031463] [2020-08-18 19:35:00,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:35:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:01,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:35:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:01,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:35:01,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200031463] [2020-08-18 19:35:01,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:35:01,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 19:35:01,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155800137] [2020-08-18 19:35:01,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 19:35:01,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:35:01,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 19:35:01,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:35:01,081 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 3 states. [2020-08-18 19:35:01,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:35:01,146 INFO L93 Difference]: Finished difference Result 160 states and 298 transitions. [2020-08-18 19:35:01,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 19:35:01,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-08-18 19:35:01,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:35:01,160 INFO L225 Difference]: With dead ends: 160 [2020-08-18 19:35:01,161 INFO L226 Difference]: Without dead ends: 78 [2020-08-18 19:35:01,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:35:01,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-18 19:35:01,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-08-18 19:35:01,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 19:35:01,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 113 transitions. [2020-08-18 19:35:01,215 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 113 transitions. Word has length 13 [2020-08-18 19:35:01,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:35:01,216 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 113 transitions. [2020-08-18 19:35:01,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 19:35:01,217 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 113 transitions. [2020-08-18 19:35:01,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 19:35:01,218 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:35:01,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:35:01,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:35:01,219 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:35:01,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:35:01,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1547300989, now seen corresponding path program 1 times [2020-08-18 19:35:01,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:35:01,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754645268] [2020-08-18 19:35:01,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:35:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:01,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:35:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:01,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:35:01,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754645268] [2020-08-18 19:35:01,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:35:01,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:35:01,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008050769] [2020-08-18 19:35:01,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:35:01,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:35:01,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:35:01,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:35:01,310 INFO L87 Difference]: Start difference. First operand 78 states and 113 transitions. Second operand 4 states. [2020-08-18 19:35:01,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:35:01,608 INFO L93 Difference]: Finished difference Result 153 states and 224 transitions. [2020-08-18 19:35:01,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:35:01,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-18 19:35:01,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:35:01,610 INFO L225 Difference]: With dead ends: 153 [2020-08-18 19:35:01,611 INFO L226 Difference]: Without dead ends: 81 [2020-08-18 19:35:01,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:35:01,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-08-18 19:35:01,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-08-18 19:35:01,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-18 19:35:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 116 transitions. [2020-08-18 19:35:01,625 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 116 transitions. Word has length 14 [2020-08-18 19:35:01,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:35:01,625 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 116 transitions. [2020-08-18 19:35:01,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:35:01,626 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 116 transitions. [2020-08-18 19:35:01,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 19:35:01,627 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:35:01,627 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:35:01,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:35:01,627 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:35:01,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:35:01,628 INFO L82 PathProgramCache]: Analyzing trace with hash 555004895, now seen corresponding path program 1 times [2020-08-18 19:35:01,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:35:01,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458651344] [2020-08-18 19:35:01,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:35:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:01,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:35:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:35:01,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458651344] [2020-08-18 19:35:01,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:35:01,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:35:01,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491600720] [2020-08-18 19:35:01,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:35:01,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:35:01,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:35:01,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:35:01,688 INFO L87 Difference]: Start difference. First operand 81 states and 116 transitions. Second operand 4 states. [2020-08-18 19:35:01,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:35:01,776 INFO L93 Difference]: Finished difference Result 146 states and 213 transitions. [2020-08-18 19:35:01,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:35:01,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 19:35:01,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:35:01,778 INFO L225 Difference]: With dead ends: 146 [2020-08-18 19:35:01,778 INFO L226 Difference]: Without dead ends: 72 [2020-08-18 19:35:01,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:35:01,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-18 19:35:01,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-08-18 19:35:01,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-08-18 19:35:01,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 102 transitions. [2020-08-18 19:35:01,790 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 102 transitions. Word has length 19 [2020-08-18 19:35:01,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:35:01,790 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 102 transitions. [2020-08-18 19:35:01,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:35:01,790 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 102 transitions. [2020-08-18 19:35:01,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 19:35:01,791 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:35:01,792 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:35:01,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:35:01,792 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:35:01,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:35:01,793 INFO L82 PathProgramCache]: Analyzing trace with hash -624681896, now seen corresponding path program 1 times [2020-08-18 19:35:01,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:35:01,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514132785] [2020-08-18 19:35:01,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:35:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:01,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:35:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:35:01,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514132785] [2020-08-18 19:35:01,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:35:01,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:35:01,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838504294] [2020-08-18 19:35:01,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:35:01,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:35:01,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:35:01,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:35:01,857 INFO L87 Difference]: Start difference. First operand 72 states and 102 transitions. Second operand 4 states. [2020-08-18 19:35:02,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:35:02,104 INFO L93 Difference]: Finished difference Result 192 states and 280 transitions. [2020-08-18 19:35:02,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:35:02,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-08-18 19:35:02,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:35:02,107 INFO L225 Difference]: With dead ends: 192 [2020-08-18 19:35:02,107 INFO L226 Difference]: Without dead ends: 122 [2020-08-18 19:35:02,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:35:02,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-18 19:35:02,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108. [2020-08-18 19:35:02,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-18 19:35:02,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 153 transitions. [2020-08-18 19:35:02,120 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 153 transitions. Word has length 22 [2020-08-18 19:35:02,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:35:02,121 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 153 transitions. [2020-08-18 19:35:02,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:35:02,121 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 153 transitions. [2020-08-18 19:35:02,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 19:35:02,122 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:35:02,122 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:35:02,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:35:02,123 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:35:02,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:35:02,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1531598883, now seen corresponding path program 1 times [2020-08-18 19:35:02,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:35:02,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956422092] [2020-08-18 19:35:02,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:35:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:02,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:35:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:35:02,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956422092] [2020-08-18 19:35:02,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:35:02,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:35:02,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409651881] [2020-08-18 19:35:02,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:35:02,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:35:02,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:35:02,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:35:02,174 INFO L87 Difference]: Start difference. First operand 108 states and 153 transitions. Second operand 4 states. [2020-08-18 19:35:02,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:35:02,336 INFO L93 Difference]: Finished difference Result 183 states and 260 transitions. [2020-08-18 19:35:02,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:35:02,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-18 19:35:02,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:35:02,338 INFO L225 Difference]: With dead ends: 183 [2020-08-18 19:35:02,338 INFO L226 Difference]: Without dead ends: 87 [2020-08-18 19:35:02,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:35:02,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-08-18 19:35:02,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-08-18 19:35:02,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-18 19:35:02,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2020-08-18 19:35:02,350 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 23 [2020-08-18 19:35:02,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:35:02,351 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2020-08-18 19:35:02,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:35:02,351 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2020-08-18 19:35:02,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-18 19:35:02,353 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:35:02,353 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:35:02,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:35:02,354 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:35:02,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:35:02,354 INFO L82 PathProgramCache]: Analyzing trace with hash -576284788, now seen corresponding path program 1 times [2020-08-18 19:35:02,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:35:02,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804008602] [2020-08-18 19:35:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:35:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:02,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:35:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:02,412 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 19:35:02,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804008602] [2020-08-18 19:35:02,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:35:02,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:35:02,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6453992] [2020-08-18 19:35:02,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:35:02,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:35:02,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:35:02,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:35:02,415 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand 4 states. [2020-08-18 19:35:02,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:35:02,515 INFO L93 Difference]: Finished difference Result 134 states and 190 transitions. [2020-08-18 19:35:02,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:35:02,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-08-18 19:35:02,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:35:02,517 INFO L225 Difference]: With dead ends: 134 [2020-08-18 19:35:02,518 INFO L226 Difference]: Without dead ends: 70 [2020-08-18 19:35:02,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:35:02,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-18 19:35:02,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-08-18 19:35:02,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-18 19:35:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2020-08-18 19:35:02,528 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 29 [2020-08-18 19:35:02,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:35:02,542 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2020-08-18 19:35:02,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:35:02,542 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2020-08-18 19:35:02,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 19:35:02,544 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:35:02,544 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:35:02,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:35:02,544 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:35:02,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:35:02,545 INFO L82 PathProgramCache]: Analyzing trace with hash -31288535, now seen corresponding path program 1 times [2020-08-18 19:35:02,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:35:02,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790783117] [2020-08-18 19:35:02,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:35:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:02,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:35:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 19:35:02,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790783117] [2020-08-18 19:35:02,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:35:02,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:35:02,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505638388] [2020-08-18 19:35:02,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:35:02,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:35:02,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:35:02,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:35:02,598 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand 4 states. [2020-08-18 19:35:02,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:35:02,790 INFO L93 Difference]: Finished difference Result 158 states and 228 transitions. [2020-08-18 19:35:02,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:35:02,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-18 19:35:02,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:35:02,794 INFO L225 Difference]: With dead ends: 158 [2020-08-18 19:35:02,794 INFO L226 Difference]: Without dead ends: 111 [2020-08-18 19:35:02,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:35:02,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-18 19:35:02,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-08-18 19:35:02,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-18 19:35:02,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 138 transitions. [2020-08-18 19:35:02,807 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 138 transitions. Word has length 30 [2020-08-18 19:35:02,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:35:02,807 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 138 transitions. [2020-08-18 19:35:02,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:35:02,807 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 138 transitions. [2020-08-18 19:35:02,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-18 19:35:02,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:35:02,809 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:35:02,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:35:02,809 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:35:02,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:35:02,810 INFO L82 PathProgramCache]: Analyzing trace with hash 180888733, now seen corresponding path program 1 times [2020-08-18 19:35:02,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:35:02,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383559703] [2020-08-18 19:35:02,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:35:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:02,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:35:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:02,853 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 19:35:02,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383559703] [2020-08-18 19:35:02,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:35:02,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:35:02,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240769505] [2020-08-18 19:35:02,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:35:02,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:35:02,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:35:02,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:35:02,856 INFO L87 Difference]: Start difference. First operand 99 states and 138 transitions. Second operand 4 states. [2020-08-18 19:35:02,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:35:02,970 INFO L93 Difference]: Finished difference Result 166 states and 232 transitions. [2020-08-18 19:35:02,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:35:02,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-08-18 19:35:02,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:35:02,972 INFO L225 Difference]: With dead ends: 166 [2020-08-18 19:35:02,972 INFO L226 Difference]: Without dead ends: 92 [2020-08-18 19:35:02,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:35:02,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-08-18 19:35:02,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-08-18 19:35:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-08-18 19:35:02,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 120 transitions. [2020-08-18 19:35:02,981 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 120 transitions. Word has length 31 [2020-08-18 19:35:02,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:35:02,981 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 120 transitions. [2020-08-18 19:35:02,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:35:02,982 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 120 transitions. [2020-08-18 19:35:02,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-18 19:35:02,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:35:02,983 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:35:02,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:35:02,984 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:35:02,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:35:02,984 INFO L82 PathProgramCache]: Analyzing trace with hash 317242888, now seen corresponding path program 1 times [2020-08-18 19:35:02,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:35:02,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114919370] [2020-08-18 19:35:02,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:35:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:03,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:35:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 19:35:03,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114919370] [2020-08-18 19:35:03,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:35:03,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:35:03,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195120377] [2020-08-18 19:35:03,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:35:03,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:35:03,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:35:03,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:35:03,027 INFO L87 Difference]: Start difference. First operand 92 states and 120 transitions. Second operand 4 states. [2020-08-18 19:35:03,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:35:03,138 INFO L93 Difference]: Finished difference Result 139 states and 184 transitions. [2020-08-18 19:35:03,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:35:03,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-08-18 19:35:03,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:35:03,140 INFO L225 Difference]: With dead ends: 139 [2020-08-18 19:35:03,140 INFO L226 Difference]: Without dead ends: 72 [2020-08-18 19:35:03,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:35:03,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-18 19:35:03,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-08-18 19:35:03,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-08-18 19:35:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2020-08-18 19:35:03,147 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 31 [2020-08-18 19:35:03,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:35:03,147 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2020-08-18 19:35:03,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:35:03,148 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2020-08-18 19:35:03,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-18 19:35:03,149 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:35:03,149 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:35:03,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:35:03,149 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:35:03,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:35:03,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1695196396, now seen corresponding path program 1 times [2020-08-18 19:35:03,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:35:03,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812951044] [2020-08-18 19:35:03,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:35:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:03,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:35:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 19:35:03,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812951044] [2020-08-18 19:35:03,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:35:03,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:35:03,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069547179] [2020-08-18 19:35:03,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:35:03,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:35:03,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:35:03,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:35:03,203 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand 4 states. [2020-08-18 19:35:03,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:35:03,332 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2020-08-18 19:35:03,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:35:03,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-08-18 19:35:03,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:35:03,334 INFO L225 Difference]: With dead ends: 74 [2020-08-18 19:35:03,334 INFO L226 Difference]: Without dead ends: 70 [2020-08-18 19:35:03,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:35:03,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-18 19:35:03,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-08-18 19:35:03,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-18 19:35:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2020-08-18 19:35:03,340 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 32 [2020-08-18 19:35:03,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:35:03,340 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2020-08-18 19:35:03,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:35:03,341 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2020-08-18 19:35:03,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 19:35:03,342 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:35:03,342 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:35:03,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:35:03,342 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:35:03,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:35:03,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1000030502, now seen corresponding path program 1 times [2020-08-18 19:35:03,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:35:03,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493508537] [2020-08-18 19:35:03,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:35:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:03,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:35:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:35:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 19:35:03,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493508537] [2020-08-18 19:35:03,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:35:03,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:35:03,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251900285] [2020-08-18 19:35:03,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:35:03,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:35:03,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:35:03,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:35:03,421 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand 4 states. [2020-08-18 19:35:03,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:35:03,522 INFO L93 Difference]: Finished difference Result 111 states and 143 transitions. [2020-08-18 19:35:03,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:35:03,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-08-18 19:35:03,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:35:03,523 INFO L225 Difference]: With dead ends: 111 [2020-08-18 19:35:03,523 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 19:35:03,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:35:03,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 19:35:03,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 19:35:03,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 19:35:03,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 19:35:03,526 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-08-18 19:35:03,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:35:03,526 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 19:35:03,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:35:03,527 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 19:35:03,527 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 19:35:03,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 19:35:03,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 19:35:03,687 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 19:35:03,688 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_update~0 |old(~m_update~0)|) (= ~m_initSign~0 |old(~m_initSign~0)|) (= ~m_sign~0 |old(~m_sign~0)|) (= ~m_verify~0 |old(~m_verify~0)|) (= ~m_Signature~0 |old(~m_Signature~0)|) (= ~m_initVerify~0 |old(~m_initVerify~0)|)) [2020-08-18 19:35:03,688 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 19:35:03,688 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 19:35:03,688 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 19:35:03,689 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 19:35:03,689 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 19:35:03,689 INFO L268 CegarLoopResult]: For program point L316(lines 316 331) no Hoare annotation was computed. [2020-08-18 19:35:03,689 INFO L268 CegarLoopResult]: For program point L283(lines 283 382) no Hoare annotation was computed. [2020-08-18 19:35:03,689 INFO L268 CegarLoopResult]: For program point L250(lines 250 261) no Hoare annotation was computed. [2020-08-18 19:35:03,689 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 390) no Hoare annotation was computed. [2020-08-18 19:35:03,689 INFO L268 CegarLoopResult]: For program point L184(lines 184 199) no Hoare annotation was computed. [2020-08-18 19:35:03,689 INFO L268 CegarLoopResult]: For program point L118(lines 118 129) no Hoare annotation was computed. [2020-08-18 19:35:03,690 INFO L268 CegarLoopResult]: For program point L366(lines 366 377) no Hoare annotation was computed. [2020-08-18 19:35:03,690 INFO L268 CegarLoopResult]: For program point L300(lines 300 315) no Hoare annotation was computed. [2020-08-18 19:35:03,690 INFO L268 CegarLoopResult]: For program point L234(lines 234 245) no Hoare annotation was computed. [2020-08-18 19:35:03,690 INFO L268 CegarLoopResult]: For program point L102(lines 102 113) no Hoare annotation was computed. [2020-08-18 19:35:03,690 INFO L268 CegarLoopResult]: For program point L350(lines 350 361) no Hoare annotation was computed. [2020-08-18 19:35:03,690 INFO L268 CegarLoopResult]: For program point L284(lines 284 299) no Hoare annotation was computed. [2020-08-18 19:35:03,690 INFO L268 CegarLoopResult]: For program point L218(lines 218 229) no Hoare annotation was computed. [2020-08-18 19:35:03,690 INFO L268 CegarLoopResult]: For program point L86(lines 86 88) no Hoare annotation was computed. [2020-08-18 19:35:03,691 INFO L268 CegarLoopResult]: For program point L334(lines 334 345) no Hoare annotation was computed. [2020-08-18 19:35:03,691 INFO L268 CegarLoopResult]: For program point L202(lines 202 213) no Hoare annotation was computed. [2020-08-18 19:35:03,691 INFO L268 CegarLoopResult]: For program point L70(lines 70 72) no Hoare annotation was computed. [2020-08-18 19:35:03,691 INFO L268 CegarLoopResult]: For program point L318(lines 318 329) no Hoare annotation was computed. [2020-08-18 19:35:03,691 INFO L268 CegarLoopResult]: For program point L186(lines 186 197) no Hoare annotation was computed. [2020-08-18 19:35:03,691 INFO L268 CegarLoopResult]: For program point L54(lines 54 56) no Hoare annotation was computed. [2020-08-18 19:35:03,691 INFO L268 CegarLoopResult]: For program point L302(lines 302 313) no Hoare annotation was computed. [2020-08-18 19:35:03,691 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 390) no Hoare annotation was computed. [2020-08-18 19:35:03,692 INFO L268 CegarLoopResult]: For program point L170(lines 170 172) no Hoare annotation was computed. [2020-08-18 19:35:03,692 INFO L268 CegarLoopResult]: For program point L286(lines 286 297) no Hoare annotation was computed. [2020-08-18 19:35:03,692 INFO L268 CegarLoopResult]: For program point L154(lines 154 156) no Hoare annotation was computed. [2020-08-18 19:35:03,692 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 385) the Hoare annotation is: (or (and (<= main_~this_state~0 0) (= main_~q~0 0)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-08-18 19:35:03,692 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 385) no Hoare annotation was computed. [2020-08-18 19:35:03,692 INFO L268 CegarLoopResult]: For program point L270(lines 270 272) no Hoare annotation was computed. [2020-08-18 19:35:03,692 INFO L268 CegarLoopResult]: For program point L138(lines 138 140) no Hoare annotation was computed. [2020-08-18 19:35:03,693 INFO L268 CegarLoopResult]: For program point L254(lines 254 256) no Hoare annotation was computed. [2020-08-18 19:35:03,693 INFO L268 CegarLoopResult]: For program point L122(lines 122 124) no Hoare annotation was computed. [2020-08-18 19:35:03,693 INFO L268 CegarLoopResult]: For program point L370(lines 370 372) no Hoare annotation was computed. [2020-08-18 19:35:03,693 INFO L268 CegarLoopResult]: For program point L238(lines 238 240) no Hoare annotation was computed. [2020-08-18 19:35:03,693 INFO L268 CegarLoopResult]: For program point L106(lines 106 108) no Hoare annotation was computed. [2020-08-18 19:35:03,693 INFO L268 CegarLoopResult]: For program point L354(lines 354 356) no Hoare annotation was computed. [2020-08-18 19:35:03,693 INFO L268 CegarLoopResult]: For program point L222(lines 222 224) no Hoare annotation was computed. [2020-08-18 19:35:03,694 INFO L264 CegarLoopResult]: At program point L371(lines 13 390) the Hoare annotation is: false [2020-08-18 19:35:03,694 INFO L268 CegarLoopResult]: For program point L338(lines 338 340) no Hoare annotation was computed. [2020-08-18 19:35:03,694 INFO L268 CegarLoopResult]: For program point L206(lines 206 208) no Hoare annotation was computed. [2020-08-18 19:35:03,694 INFO L268 CegarLoopResult]: For program point L322(lines 322 324) no Hoare annotation was computed. [2020-08-18 19:35:03,694 INFO L268 CegarLoopResult]: For program point L190(lines 190 192) no Hoare annotation was computed. [2020-08-18 19:35:03,694 INFO L268 CegarLoopResult]: For program point L306(lines 306 308) no Hoare annotation was computed. [2020-08-18 19:35:03,694 INFO L268 CegarLoopResult]: For program point L290(lines 290 292) no Hoare annotation was computed. [2020-08-18 19:35:03,695 INFO L268 CegarLoopResult]: For program point L27(lines 27 46) no Hoare annotation was computed. [2020-08-18 19:35:03,695 INFO L268 CegarLoopResult]: For program point L28(lines 28 43) no Hoare annotation was computed. [2020-08-18 19:35:03,695 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 389) no Hoare annotation was computed. [2020-08-18 19:35:03,695 INFO L268 CegarLoopResult]: For program point L30(lines 30 41) no Hoare annotation was computed. [2020-08-18 19:35:03,695 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 390) the Hoare annotation is: true [2020-08-18 19:35:03,695 INFO L268 CegarLoopResult]: For program point L80(lines 80 95) no Hoare annotation was computed. [2020-08-18 19:35:03,696 INFO L268 CegarLoopResult]: For program point L47(lines 47 98) no Hoare annotation was computed. [2020-08-18 19:35:03,696 INFO L268 CegarLoopResult]: For program point L64(lines 64 79) no Hoare annotation was computed. [2020-08-18 19:35:03,696 INFO L268 CegarLoopResult]: For program point L48(lines 48 63) no Hoare annotation was computed. [2020-08-18 19:35:03,696 INFO L268 CegarLoopResult]: For program point L164(lines 164 179) no Hoare annotation was computed. [2020-08-18 19:35:03,696 INFO L268 CegarLoopResult]: For program point L148(lines 148 163) no Hoare annotation was computed. [2020-08-18 19:35:03,696 INFO L268 CegarLoopResult]: For program point L82(lines 82 93) no Hoare annotation was computed. [2020-08-18 19:35:03,696 INFO L268 CegarLoopResult]: For program point L264(lines 264 279) no Hoare annotation was computed. [2020-08-18 19:35:03,697 INFO L268 CegarLoopResult]: For program point L132(lines 132 147) no Hoare annotation was computed. [2020-08-18 19:35:03,697 INFO L268 CegarLoopResult]: For program point L99(lines 99 182) no Hoare annotation was computed. [2020-08-18 19:35:03,697 INFO L268 CegarLoopResult]: For program point L66(lines 66 77) no Hoare annotation was computed. [2020-08-18 19:35:03,697 INFO L268 CegarLoopResult]: For program point L248(lines 248 263) no Hoare annotation was computed. [2020-08-18 19:35:03,697 INFO L268 CegarLoopResult]: For program point L116(lines 116 131) no Hoare annotation was computed. [2020-08-18 19:35:03,697 INFO L268 CegarLoopResult]: For program point L50(lines 50 61) no Hoare annotation was computed. [2020-08-18 19:35:03,697 INFO L268 CegarLoopResult]: For program point L364(lines 364 379) no Hoare annotation was computed. [2020-08-18 19:35:03,697 INFO L268 CegarLoopResult]: For program point L232(lines 232 247) no Hoare annotation was computed. [2020-08-18 19:35:03,697 INFO L268 CegarLoopResult]: For program point L166(lines 166 177) no Hoare annotation was computed. [2020-08-18 19:35:03,698 INFO L268 CegarLoopResult]: For program point L100(lines 100 115) no Hoare annotation was computed. [2020-08-18 19:35:03,698 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-08-18 19:35:03,698 INFO L264 CegarLoopResult]: At program point L381(lines 22 385) the Hoare annotation is: (let ((.cse0 (<= main_~this_state~0 0))) (or (and .cse0 (= main_~q~0 0)) (and .cse0 (= main_~q~0 2)) (and (= main_~q~0 3) (= 2 main_~this_state~0)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0)))) [2020-08-18 19:35:03,698 INFO L268 CegarLoopResult]: For program point L348(lines 348 363) no Hoare annotation was computed. [2020-08-18 19:35:03,698 INFO L268 CegarLoopResult]: For program point L216(lines 216 231) no Hoare annotation was computed. [2020-08-18 19:35:03,698 INFO L268 CegarLoopResult]: For program point L183(lines 183 282) no Hoare annotation was computed. [2020-08-18 19:35:03,699 INFO L268 CegarLoopResult]: For program point L150(lines 150 161) no Hoare annotation was computed. [2020-08-18 19:35:03,699 INFO L268 CegarLoopResult]: For program point L332(lines 332 347) no Hoare annotation was computed. [2020-08-18 19:35:03,699 INFO L268 CegarLoopResult]: For program point L266(lines 266 277) no Hoare annotation was computed. [2020-08-18 19:35:03,699 INFO L268 CegarLoopResult]: For program point L200(lines 200 215) no Hoare annotation was computed. [2020-08-18 19:35:03,699 INFO L268 CegarLoopResult]: For program point L134(lines 134 145) no Hoare annotation was computed. [2020-08-18 19:35:03,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 07:35:03 BoogieIcfgContainer [2020-08-18 19:35:03,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 19:35:03,721 INFO L168 Benchmark]: Toolchain (without parser) took 4086.38 ms. Allocated memory was 147.3 MB in the beginning and 244.8 MB in the end (delta: 97.5 MB). Free memory was 102.8 MB in the beginning and 150.9 MB in the end (delta: -48.1 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2020-08-18 19:35:03,722 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 19:35:03,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 501.40 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 102.6 MB in the beginning and 181.3 MB in the end (delta: -78.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-08-18 19:35:03,724 INFO L168 Benchmark]: Boogie Preprocessor took 41.25 ms. Allocated memory is still 203.9 MB. Free memory was 180.7 MB in the beginning and 178.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-18 19:35:03,725 INFO L168 Benchmark]: RCFGBuilder took 549.12 ms. Allocated memory is still 203.9 MB. Free memory was 178.7 MB in the beginning and 150.5 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-08-18 19:35:03,726 INFO L168 Benchmark]: TraceAbstraction took 2989.43 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 149.8 MB in the beginning and 150.9 MB in the end (delta: -1.1 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. [2020-08-18 19:35:03,730 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 501.40 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 102.6 MB in the beginning and 181.3 MB in the end (delta: -78.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.25 ms. Allocated memory is still 203.9 MB. Free memory was 180.7 MB in the beginning and 178.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 549.12 ms. Allocated memory is still 203.9 MB. Free memory was 178.7 MB in the beginning and 150.5 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2989.43 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 149.8 MB in the beginning and 150.9 MB in the end (delta: -1.1 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 389]: 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: 22]: Loop Invariant Derived loop invariant: (((this_state <= 0 && q == 0) || (this_state <= 0 && q == 2)) || (q == 3 && 2 == this_state)) || (4 <= q && 3 == this_state) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (this_state <= 0 && q == 0) || (4 <= q && 3 == this_state) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1008 SDtfs, 1441 SDslu, 73 SDs, 0 SdLazy, 634 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=4, 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, 11 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 13 NumberOfFragments, 67 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 153 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 277 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 266 ConstructedInterpolants, 0 QuantifiedInterpolants, 15354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 55/55 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...