/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:16:17,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:16:17,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:16:17,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:16:17,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:16:17,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:16:17,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:16:17,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:16:17,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:16:17,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:16:17,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:16:17,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:16:17,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:16:17,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:16:17,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:16:17,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:16:17,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:16:17,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:16:17,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:16:17,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:16:17,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:16:17,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:16:17,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:16:17,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:16:17,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 12:16:17,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:16:17,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:16:17,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:16:17,207 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 12:16:17,229 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:16:17,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:16:17,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:16:17,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:16:17,232 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:16:17,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:16:17,232 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:16:17,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:16:17,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:16:17,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:16:17,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:16:17,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:16:17,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:16:17,234 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:16:17,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:16:17,234 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:16:17,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:16:17,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:16:17,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:16:17,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:16:17,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:16:17,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:16:17,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:16:17,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:16:17,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:16:17,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:16:17,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:16:17,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:16:17,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:16:17,237 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:16:17,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:16:17,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:16:17,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:16:17,594 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:16:17,594 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:16:17,595 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-08-18 12:16:17,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe653925e/8c27f508005941ad99ea2f5616213e9b/FLAG178d8b49e [2020-08-18 12:16:18,181 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:16:18,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-08-18 12:16:18,200 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe653925e/8c27f508005941ad99ea2f5616213e9b/FLAG178d8b49e [2020-08-18 12:16:18,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe653925e/8c27f508005941ad99ea2f5616213e9b [2020-08-18 12:16:18,563 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:16:18,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:16:18,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:16:18,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:16:18,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:16:18,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:16:18" (1/1) ... [2020-08-18 12:16:18,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbadd11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18, skipping insertion in model container [2020-08-18 12:16:18,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:16:18" (1/1) ... [2020-08-18 12:16:18,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:16:18,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:16:18,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:16:18,854 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:16:18,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:16:18,910 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:16:18,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18 WrapperNode [2020-08-18 12:16:18,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:16:18,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:16:18,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:16:18,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:16:19,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18" (1/1) ... [2020-08-18 12:16:19,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18" (1/1) ... [2020-08-18 12:16:19,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18" (1/1) ... [2020-08-18 12:16:19,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18" (1/1) ... [2020-08-18 12:16:19,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18" (1/1) ... [2020-08-18 12:16:19,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18" (1/1) ... [2020-08-18 12:16:19,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18" (1/1) ... [2020-08-18 12:16:19,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:16:19,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:16:19,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:16:19,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:16:19,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18" (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 12:16:19,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:16:19,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:16:19,145 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 12:16:19,145 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:16:19,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:16:19,146 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 12:16:19,146 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 12:16:19,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 12:16:19,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:16:19,147 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:16:19,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:16:19,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:16:19,597 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:16:19,598 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 12:16:19,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:16:19 BoogieIcfgContainer [2020-08-18 12:16:19,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:16:19,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:16:19,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:16:19,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:16:19,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:16:18" (1/3) ... [2020-08-18 12:16:19,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19eabea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:16:19, skipping insertion in model container [2020-08-18 12:16:19,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18" (2/3) ... [2020-08-18 12:16:19,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19eabea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:16:19, skipping insertion in model container [2020-08-18 12:16:19,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:16:19" (3/3) ... [2020-08-18 12:16:19,613 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+lhb-reducer.c [2020-08-18 12:16:19,625 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:16:19,632 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-08-18 12:16:19,650 INFO L251 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-08-18 12:16:19,691 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:16:19,692 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:16:19,692 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:16:19,692 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:16:19,693 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:16:19,693 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:16:19,693 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:16:19,693 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:16:19,717 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-08-18 12:16:19,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-18 12:16:19,724 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:19,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:19,725 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:19,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:19,731 INFO L82 PathProgramCache]: Analyzing trace with hash -452302183, now seen corresponding path program 1 times [2020-08-18 12:16:19,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:19,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526307173] [2020-08-18 12:16:19,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:19,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:20,012 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 12:16:20,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526307173] [2020-08-18 12:16:20,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:20,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:16:20,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193018890] [2020-08-18 12:16:20,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:16:20,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:20,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:16:20,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:16:20,036 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 5 states. [2020-08-18 12:16:20,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:20,401 INFO L93 Difference]: Finished difference Result 135 states and 178 transitions. [2020-08-18 12:16:20,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 12:16:20,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-18 12:16:20,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:20,416 INFO L225 Difference]: With dead ends: 135 [2020-08-18 12:16:20,416 INFO L226 Difference]: Without dead ends: 111 [2020-08-18 12:16:20,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:16:20,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-18 12:16:20,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 73. [2020-08-18 12:16:20,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-08-18 12:16:20,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-08-18 12:16:20,474 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 12 [2020-08-18 12:16:20,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:20,475 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-08-18 12:16:20,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:16:20,475 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-08-18 12:16:20,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-18 12:16:20,476 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:20,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:20,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:16:20,478 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:20,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:20,478 INFO L82 PathProgramCache]: Analyzing trace with hash -449131431, now seen corresponding path program 1 times [2020-08-18 12:16:20,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:20,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075842944] [2020-08-18 12:16:20,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:20,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:20,586 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 12:16:20,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075842944] [2020-08-18 12:16:20,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:20,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:16:20,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963420885] [2020-08-18 12:16:20,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:16:20,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:20,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:16:20,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:16:20,591 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 5 states. [2020-08-18 12:16:20,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:20,885 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2020-08-18 12:16:20,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 12:16:20,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-18 12:16:20,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:20,888 INFO L225 Difference]: With dead ends: 111 [2020-08-18 12:16:20,888 INFO L226 Difference]: Without dead ends: 109 [2020-08-18 12:16:20,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:16:20,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-08-18 12:16:20,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 71. [2020-08-18 12:16:20,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-18 12:16:20,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-08-18 12:16:20,902 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 12 [2020-08-18 12:16:20,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:20,903 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-08-18 12:16:20,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:16:20,903 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-08-18 12:16:20,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 12:16:20,904 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:20,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:20,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:16:20,905 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:20,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:20,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1218997650, now seen corresponding path program 1 times [2020-08-18 12:16:20,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:20,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624687179] [2020-08-18 12:16:20,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:20,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:21,003 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 12:16:21,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624687179] [2020-08-18 12:16:21,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:21,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:21,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463399498] [2020-08-18 12:16:21,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:21,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:21,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:21,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:21,010 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 6 states. [2020-08-18 12:16:21,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:21,207 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-08-18 12:16:21,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:16:21,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-18 12:16:21,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:21,209 INFO L225 Difference]: With dead ends: 73 [2020-08-18 12:16:21,209 INFO L226 Difference]: Without dead ends: 71 [2020-08-18 12:16:21,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:16:21,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-08-18 12:16:21,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2020-08-18 12:16:21,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-18 12:16:21,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-08-18 12:16:21,219 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 15 [2020-08-18 12:16:21,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:21,219 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-08-18 12:16:21,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:21,219 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-08-18 12:16:21,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 12:16:21,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:21,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:21,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:16:21,221 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:21,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:21,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1248304044, now seen corresponding path program 1 times [2020-08-18 12:16:21,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:21,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862037519] [2020-08-18 12:16:21,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:21,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:21,325 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 12:16:21,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862037519] [2020-08-18 12:16:21,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:21,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:21,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172084442] [2020-08-18 12:16:21,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:21,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:21,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:21,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:21,334 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 6 states. [2020-08-18 12:16:21,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:21,517 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-08-18 12:16:21,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:16:21,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-18 12:16:21,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:21,519 INFO L225 Difference]: With dead ends: 71 [2020-08-18 12:16:21,519 INFO L226 Difference]: Without dead ends: 69 [2020-08-18 12:16:21,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:16:21,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-18 12:16:21,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-08-18 12:16:21,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-08-18 12:16:21,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-08-18 12:16:21,529 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 15 [2020-08-18 12:16:21,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:21,529 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-08-18 12:16:21,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:21,530 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-08-18 12:16:21,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 12:16:21,531 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:21,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:21,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:16:21,532 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:21,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:21,533 INFO L82 PathProgramCache]: Analyzing trace with hash 865781601, now seen corresponding path program 1 times [2020-08-18 12:16:21,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:21,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626546797] [2020-08-18 12:16:21,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:21,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:21,602 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 12:16:21,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626546797] [2020-08-18 12:16:21,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:21,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:16:21,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880705881] [2020-08-18 12:16:21,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:16:21,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:21,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:16:21,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:16:21,606 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2020-08-18 12:16:21,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:21,747 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-08-18 12:16:21,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 12:16:21,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-18 12:16:21,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:21,749 INFO L225 Difference]: With dead ends: 69 [2020-08-18 12:16:21,749 INFO L226 Difference]: Without dead ends: 65 [2020-08-18 12:16:21,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:16:21,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-08-18 12:16:21,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-08-18 12:16:21,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-08-18 12:16:21,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-08-18 12:16:21,765 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 16 [2020-08-18 12:16:21,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:21,766 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-08-18 12:16:21,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:16:21,766 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-08-18 12:16:21,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 12:16:21,767 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:21,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:21,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:16:21,767 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:21,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:21,768 INFO L82 PathProgramCache]: Analyzing trace with hash -42274612, now seen corresponding path program 1 times [2020-08-18 12:16:21,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:21,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950250507] [2020-08-18 12:16:21,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:21,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:21,869 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 12:16:21,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950250507] [2020-08-18 12:16:21,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:21,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:21,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481616540] [2020-08-18 12:16:21,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:21,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:21,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:21,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:21,872 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 6 states. [2020-08-18 12:16:22,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:22,086 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2020-08-18 12:16:22,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:16:22,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-08-18 12:16:22,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:22,089 INFO L225 Difference]: With dead ends: 108 [2020-08-18 12:16:22,089 INFO L226 Difference]: Without dead ends: 106 [2020-08-18 12:16:22,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:16:22,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-08-18 12:16:22,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 61. [2020-08-18 12:16:22,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-08-18 12:16:22,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-08-18 12:16:22,097 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 16 [2020-08-18 12:16:22,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:22,097 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-08-18 12:16:22,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:22,098 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-08-18 12:16:22,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 12:16:22,099 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:22,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:22,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:16:22,099 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:22,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:22,100 INFO L82 PathProgramCache]: Analyzing trace with hash -42288514, now seen corresponding path program 1 times [2020-08-18 12:16:22,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:22,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477983787] [2020-08-18 12:16:22,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:22,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:22,167 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 12:16:22,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477983787] [2020-08-18 12:16:22,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:22,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:22,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127338111] [2020-08-18 12:16:22,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:22,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:22,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:22,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:22,169 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 6 states. [2020-08-18 12:16:22,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:22,370 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2020-08-18 12:16:22,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:16:22,371 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-08-18 12:16:22,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:22,372 INFO L225 Difference]: With dead ends: 93 [2020-08-18 12:16:22,372 INFO L226 Difference]: Without dead ends: 91 [2020-08-18 12:16:22,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:16:22,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-08-18 12:16:22,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 59. [2020-08-18 12:16:22,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-08-18 12:16:22,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-08-18 12:16:22,379 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 16 [2020-08-18 12:16:22,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:22,380 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-08-18 12:16:22,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:22,380 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-08-18 12:16:22,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 12:16:22,381 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:22,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:22,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 12:16:22,381 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:22,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:22,382 INFO L82 PathProgramCache]: Analyzing trace with hash -42716511, now seen corresponding path program 1 times [2020-08-18 12:16:22,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:22,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541643062] [2020-08-18 12:16:22,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:22,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:22,441 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 12:16:22,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541643062] [2020-08-18 12:16:22,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:22,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:16:22,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415488106] [2020-08-18 12:16:22,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:16:22,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:22,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:16:22,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:16:22,444 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 5 states. [2020-08-18 12:16:22,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:22,545 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-08-18 12:16:22,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 12:16:22,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-18 12:16:22,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:22,546 INFO L225 Difference]: With dead ends: 61 [2020-08-18 12:16:22,546 INFO L226 Difference]: Without dead ends: 57 [2020-08-18 12:16:22,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:16:22,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-18 12:16:22,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-08-18 12:16:22,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-18 12:16:22,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-08-18 12:16:22,552 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 16 [2020-08-18 12:16:22,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:22,552 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-08-18 12:16:22,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:16:22,553 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-08-18 12:16:22,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 12:16:22,554 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:22,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:22,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 12:16:22,554 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:22,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:22,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1083648192, now seen corresponding path program 1 times [2020-08-18 12:16:22,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:22,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667453364] [2020-08-18 12:16:22,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:22,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:22,635 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 12:16:22,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667453364] [2020-08-18 12:16:22,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:22,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:22,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383128408] [2020-08-18 12:16:22,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:22,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:22,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:22,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:22,639 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 6 states. [2020-08-18 12:16:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:22,784 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2020-08-18 12:16:22,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:16:22,785 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-18 12:16:22,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:22,786 INFO L225 Difference]: With dead ends: 74 [2020-08-18 12:16:22,786 INFO L226 Difference]: Without dead ends: 72 [2020-08-18 12:16:22,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:16:22,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-18 12:16:22,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 53. [2020-08-18 12:16:22,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-08-18 12:16:22,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-08-18 12:16:22,792 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 17 [2020-08-18 12:16:22,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:22,792 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-08-18 12:16:22,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:22,793 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-08-18 12:16:22,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 12:16:22,793 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:22,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:22,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 12:16:22,794 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:22,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:22,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1085187392, now seen corresponding path program 1 times [2020-08-18 12:16:22,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:22,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240936705] [2020-08-18 12:16:22,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:22,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:22,838 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 12:16:22,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240936705] [2020-08-18 12:16:22,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:22,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:22,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783862424] [2020-08-18 12:16:22,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:22,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:22,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:22,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:22,840 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 6 states. [2020-08-18 12:16:22,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:22,980 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2020-08-18 12:16:22,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:16:22,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-18 12:16:22,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:22,981 INFO L225 Difference]: With dead ends: 55 [2020-08-18 12:16:22,982 INFO L226 Difference]: Without dead ends: 53 [2020-08-18 12:16:22,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:16:22,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-08-18 12:16:22,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-08-18 12:16:22,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-08-18 12:16:22,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-08-18 12:16:22,987 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 17 [2020-08-18 12:16:22,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:22,988 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-08-18 12:16:22,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:22,988 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-08-18 12:16:22,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 12:16:22,989 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:22,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:22,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 12:16:22,990 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:22,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:22,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1310509752, now seen corresponding path program 1 times [2020-08-18 12:16:22,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:22,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076138472] [2020-08-18 12:16:22,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:23,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:23,069 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 12:16:23,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076138472] [2020-08-18 12:16:23,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:23,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:23,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777902292] [2020-08-18 12:16:23,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:23,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:23,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:23,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:23,071 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 6 states. [2020-08-18 12:16:23,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:23,284 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2020-08-18 12:16:23,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 12:16:23,285 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-18 12:16:23,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:23,286 INFO L225 Difference]: With dead ends: 86 [2020-08-18 12:16:23,286 INFO L226 Difference]: Without dead ends: 84 [2020-08-18 12:16:23,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:16:23,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-08-18 12:16:23,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 49. [2020-08-18 12:16:23,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-08-18 12:16:23,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-08-18 12:16:23,291 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 17 [2020-08-18 12:16:23,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:23,292 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-08-18 12:16:23,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:23,292 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-08-18 12:16:23,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 12:16:23,293 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:23,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:23,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 12:16:23,293 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:23,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:23,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1310940728, now seen corresponding path program 1 times [2020-08-18 12:16:23,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:23,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177155946] [2020-08-18 12:16:23,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:23,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:23,355 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 12:16:23,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177155946] [2020-08-18 12:16:23,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:23,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:23,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600979740] [2020-08-18 12:16:23,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:23,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:23,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:23,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:23,358 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-08-18 12:16:23,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:23,530 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-08-18 12:16:23,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 12:16:23,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-18 12:16:23,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:23,532 INFO L225 Difference]: With dead ends: 76 [2020-08-18 12:16:23,532 INFO L226 Difference]: Without dead ends: 74 [2020-08-18 12:16:23,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:16:23,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-08-18 12:16:23,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 47. [2020-08-18 12:16:23,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-18 12:16:23,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-08-18 12:16:23,537 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 17 [2020-08-18 12:16:23,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:23,537 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-08-18 12:16:23,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:23,537 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-08-18 12:16:23,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 12:16:23,538 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:23,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:23,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 12:16:23,539 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:23,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:23,539 INFO L82 PathProgramCache]: Analyzing trace with hash -765275888, now seen corresponding path program 1 times [2020-08-18 12:16:23,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:23,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003660409] [2020-08-18 12:16:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:23,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:23,578 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 12:16:23,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003660409] [2020-08-18 12:16:23,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:23,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:23,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897819879] [2020-08-18 12:16:23,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:23,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:23,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:23,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:23,581 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 6 states. [2020-08-18 12:16:23,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:23,751 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-08-18 12:16:23,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:16:23,752 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-18 12:16:23,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:23,753 INFO L225 Difference]: With dead ends: 69 [2020-08-18 12:16:23,753 INFO L226 Difference]: Without dead ends: 67 [2020-08-18 12:16:23,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:16:23,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-18 12:16:23,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 45. [2020-08-18 12:16:23,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-18 12:16:23,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-08-18 12:16:23,758 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 18 [2020-08-18 12:16:23,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:23,758 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-08-18 12:16:23,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:23,758 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-08-18 12:16:23,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 12:16:23,759 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:23,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:23,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 12:16:23,760 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:23,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:23,760 INFO L82 PathProgramCache]: Analyzing trace with hash -766641308, now seen corresponding path program 1 times [2020-08-18 12:16:23,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:23,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088370051] [2020-08-18 12:16:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:23,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:23,824 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 12:16:23,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088370051] [2020-08-18 12:16:23,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:23,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:23,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155613570] [2020-08-18 12:16:23,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:23,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:23,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:23,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:23,826 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 6 states. [2020-08-18 12:16:23,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:23,986 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-08-18 12:16:23,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 12:16:23,986 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-18 12:16:23,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:23,987 INFO L225 Difference]: With dead ends: 59 [2020-08-18 12:16:23,987 INFO L226 Difference]: Without dead ends: 57 [2020-08-18 12:16:23,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:16:23,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-18 12:16:23,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 43. [2020-08-18 12:16:23,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 12:16:23,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-08-18 12:16:23,992 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-08-18 12:16:23,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:23,993 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-08-18 12:16:23,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:23,993 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-08-18 12:16:23,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 12:16:23,994 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:23,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:23,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 12:16:23,994 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:23,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:23,995 INFO L82 PathProgramCache]: Analyzing trace with hash -718926058, now seen corresponding path program 1 times [2020-08-18 12:16:23,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:23,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226030340] [2020-08-18 12:16:23,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:24,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:24,046 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 12:16:24,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226030340] [2020-08-18 12:16:24,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:24,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:24,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108291039] [2020-08-18 12:16:24,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:24,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:24,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:24,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:24,048 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-08-18 12:16:24,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:24,156 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-08-18 12:16:24,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 12:16:24,156 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-18 12:16:24,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:24,157 INFO L225 Difference]: With dead ends: 43 [2020-08-18 12:16:24,157 INFO L226 Difference]: Without dead ends: 39 [2020-08-18 12:16:24,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:16:24,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-18 12:16:24,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-18 12:16:24,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-18 12:16:24,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-08-18 12:16:24,163 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 18 [2020-08-18 12:16:24,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:24,163 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-08-18 12:16:24,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:24,163 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-08-18 12:16:24,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 12:16:24,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:24,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:24,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 12:16:24,164 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:24,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:24,165 INFO L82 PathProgramCache]: Analyzing trace with hash 2046254387, now seen corresponding path program 1 times [2020-08-18 12:16:24,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:24,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864297590] [2020-08-18 12:16:24,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:24,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:24,218 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 12:16:24,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864297590] [2020-08-18 12:16:24,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:24,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:24,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706022911] [2020-08-18 12:16:24,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:24,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:24,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:24,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:24,220 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2020-08-18 12:16:24,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:24,373 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-08-18 12:16:24,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 12:16:24,373 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-18 12:16:24,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:24,374 INFO L225 Difference]: With dead ends: 54 [2020-08-18 12:16:24,374 INFO L226 Difference]: Without dead ends: 52 [2020-08-18 12:16:24,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:16:24,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-18 12:16:24,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 37. [2020-08-18 12:16:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-18 12:16:24,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-08-18 12:16:24,379 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 19 [2020-08-18 12:16:24,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:24,380 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-08-18 12:16:24,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:24,380 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-08-18 12:16:24,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 12:16:24,381 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:24,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:24,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 12:16:24,381 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:24,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:24,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1992174599, now seen corresponding path program 1 times [2020-08-18 12:16:24,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:24,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328858172] [2020-08-18 12:16:24,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:24,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:24,420 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 12:16:24,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328858172] [2020-08-18 12:16:24,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:24,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:16:24,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955358212] [2020-08-18 12:16:24,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:16:24,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:24,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:16:24,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:16:24,423 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-08-18 12:16:24,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:24,517 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-08-18 12:16:24,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 12:16:24,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-18 12:16:24,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:24,518 INFO L225 Difference]: With dead ends: 37 [2020-08-18 12:16:24,519 INFO L226 Difference]: Without dead ends: 35 [2020-08-18 12:16:24,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:16:24,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-18 12:16:24,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-18 12:16:24,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-18 12:16:24,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-08-18 12:16:24,522 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 20 [2020-08-18 12:16:24,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:24,523 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-08-18 12:16:24,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:16:24,523 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-08-18 12:16:24,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 12:16:24,523 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:24,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:24,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 12:16:24,524 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:24,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:24,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1627873548, now seen corresponding path program 1 times [2020-08-18 12:16:24,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:24,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530975595] [2020-08-18 12:16:24,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:24,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:24,559 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 12:16:24,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530975595] [2020-08-18 12:16:24,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:24,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:16:24,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189392539] [2020-08-18 12:16:24,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:16:24,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:24,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:16:24,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:16:24,561 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-08-18 12:16:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:24,634 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-08-18 12:16:24,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 12:16:24,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-18 12:16:24,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:24,635 INFO L225 Difference]: With dead ends: 37 [2020-08-18 12:16:24,635 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 12:16:24,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:16:24,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 12:16:24,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 12:16:24,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 12:16:24,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 12:16:24,637 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-08-18 12:16:24,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:24,637 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 12:16:24,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:16:24,638 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 12:16:24,638 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 12:16:24,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-18 12:16:24,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 12:16:24,952 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 12:16:24,953 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_383_0~0 |old(~__tmp_383_0~0)|) (= ~__tmp_259_0~0 |old(~__tmp_259_0~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_305~0 |old(~__return_305~0)|)) [2020-08-18 12:16:24,953 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 12:16:24,953 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 12:16:24,953 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 12:16:24,954 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 12:16:24,954 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 12:16:24,954 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-18 12:16:24,954 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-18 12:16:24,954 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-18 12:16:24,954 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-18 12:16:24,954 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 112) no Hoare annotation was computed. [2020-08-18 12:16:24,955 INFO L264 CegarLoopResult]: At program point L382(lines 280 389) the Hoare annotation is: (and (<= (+ main_~main__t~0 1) main_~main__tagbuf_len~0) (not (= main_~__VERIFIER_assert__cond~13 0)) (<= 0 main_~main__t~0)) [2020-08-18 12:16:24,955 INFO L264 CegarLoopResult]: At program point L349(lines 30 393) the Hoare annotation is: (and (<= (+ main_~main__t~0 1) main_~main__tagbuf_len~0) (<= 0 main_~main__t~0)) [2020-08-18 12:16:24,955 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 400) no Hoare annotation was computed. [2020-08-18 12:16:24,955 INFO L268 CegarLoopResult]: For program point L184(lines 184 194) no Hoare annotation was computed. [2020-08-18 12:16:24,955 INFO L268 CegarLoopResult]: For program point L374(lines 374 383) no Hoare annotation was computed. [2020-08-18 12:16:24,955 INFO L268 CegarLoopResult]: For program point L341(lines 341 350) no Hoare annotation was computed. [2020-08-18 12:16:24,955 INFO L268 CegarLoopResult]: For program point L110(lines 110 201) no Hoare annotation was computed. [2020-08-18 12:16:24,956 INFO L268 CegarLoopResult]: For program point L234(line 234) no Hoare annotation was computed. [2020-08-18 12:16:24,956 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 276) no Hoare annotation was computed. [2020-08-18 12:16:24,956 INFO L264 CegarLoopResult]: At program point L193(lines 54 251) the Hoare annotation is: (and (<= 1 main_~main__t~0) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2020-08-18 12:16:24,956 INFO L268 CegarLoopResult]: For program point L152(line 152) no Hoare annotation was computed. [2020-08-18 12:16:24,956 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 152) no Hoare annotation was computed. [2020-08-18 12:16:24,956 INFO L268 CegarLoopResult]: For program point L276(line 276) no Hoare annotation was computed. [2020-08-18 12:16:24,957 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 331) no Hoare annotation was computed. [2020-08-18 12:16:24,957 INFO L268 CegarLoopResult]: For program point L103(lines 103 207) no Hoare annotation was computed. [2020-08-18 12:16:24,957 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-08-18 12:16:24,957 INFO L268 CegarLoopResult]: For program point L37(lines 37 253) no Hoare annotation was computed. [2020-08-18 12:16:24,957 INFO L268 CegarLoopResult]: For program point L293(lines 293 315) no Hoare annotation was computed. [2020-08-18 12:16:24,957 INFO L268 CegarLoopResult]: For program point L186(line 186) no Hoare annotation was computed. [2020-08-18 12:16:24,957 INFO L268 CegarLoopResult]: For program point L376(line 376) no Hoare annotation was computed. [2020-08-18 12:16:24,957 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 140) no Hoare annotation was computed. [2020-08-18 12:16:24,958 INFO L268 CegarLoopResult]: For program point L343(line 343) no Hoare annotation was computed. [2020-08-18 12:16:24,958 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-08-18 12:16:24,958 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 400) no Hoare annotation was computed. [2020-08-18 12:16:24,958 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 307) no Hoare annotation was computed. [2020-08-18 12:16:24,958 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2020-08-18 12:16:24,958 INFO L268 CegarLoopResult]: For program point L30(lines 30 393) no Hoare annotation was computed. [2020-08-18 12:16:24,958 INFO L268 CegarLoopResult]: For program point L286(lines 286 388) no Hoare annotation was computed. [2020-08-18 12:16:24,959 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 13 400) the Hoare annotation is: (and (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0)) [2020-08-18 12:16:24,959 INFO L268 CegarLoopResult]: For program point L220(lines 220 242) no Hoare annotation was computed. [2020-08-18 12:16:24,959 INFO L268 CegarLoopResult]: For program point L22(lines 22 394) no Hoare annotation was computed. [2020-08-18 12:16:24,959 INFO L268 CegarLoopResult]: For program point L80(lines 80 90) no Hoare annotation was computed. [2020-08-18 12:16:24,959 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 186) no Hoare annotation was computed. [2020-08-18 12:16:24,959 INFO L268 CegarLoopResult]: For program point L138(lines 138 160) no Hoare annotation was computed. [2020-08-18 12:16:24,959 INFO L268 CegarLoopResult]: For program point L295(line 295) no Hoare annotation was computed. [2020-08-18 12:16:24,959 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 364) no Hoare annotation was computed. [2020-08-18 12:16:24,960 INFO L268 CegarLoopResult]: For program point L122(lines 122 199) no Hoare annotation was computed. [2020-08-18 12:16:24,960 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 174) no Hoare annotation was computed. [2020-08-18 12:16:24,960 INFO L271 CegarLoopResult]: At program point L312(lines 30 393) the Hoare annotation is: true [2020-08-18 12:16:24,960 INFO L268 CegarLoopResult]: For program point L213(lines 213 248) no Hoare annotation was computed. [2020-08-18 12:16:24,960 INFO L268 CegarLoopResult]: For program point L48(lines 48 251) no Hoare annotation was computed. [2020-08-18 12:16:24,960 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 343) no Hoare annotation was computed. [2020-08-18 12:16:24,960 INFO L268 CegarLoopResult]: For program point L172(lines 172 196) no Hoare annotation was computed. [2020-08-18 12:16:24,960 INFO L268 CegarLoopResult]: For program point L362(lines 362 385) no Hoare annotation was computed. [2020-08-18 12:16:24,961 INFO L268 CegarLoopResult]: For program point L329(lines 329 352) no Hoare annotation was computed. [2020-08-18 12:16:24,961 INFO L268 CegarLoopResult]: For program point L263(lines 263 391) no Hoare annotation was computed. [2020-08-18 12:16:24,961 INFO L268 CegarLoopResult]: For program point L131(lines 131 198) no Hoare annotation was computed. [2020-08-18 12:16:24,961 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 82) no Hoare annotation was computed. [2020-08-18 12:16:24,961 INFO L268 CegarLoopResult]: For program point L222(line 222) no Hoare annotation was computed. [2020-08-18 12:16:24,961 INFO L264 CegarLoopResult]: At program point L247(lines 99 249) the Hoare annotation is: (and (<= (+ main_~main__t~0 1) main_~main__tagbuf_len~0) (<= 1 main_~main__t~0)) [2020-08-18 12:16:24,961 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-08-18 12:16:24,962 INFO L268 CegarLoopResult]: For program point L305(lines 305 313) no Hoare annotation was computed. [2020-08-18 12:16:24,962 INFO L268 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-08-18 12:16:24,962 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 234) no Hoare annotation was computed. [2020-08-18 12:16:24,962 INFO L268 CegarLoopResult]: For program point L99(lines 99 249) no Hoare annotation was computed. [2020-08-18 12:16:24,962 INFO L268 CegarLoopResult]: For program point L322(lines 322 387) no Hoare annotation was computed. [2020-08-18 12:16:24,962 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2020-08-18 12:16:24,962 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-08-18 12:16:24,963 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-08-18 12:16:24,963 INFO L268 CegarLoopResult]: For program point L174(line 174) no Hoare annotation was computed. [2020-08-18 12:16:24,963 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 222) no Hoare annotation was computed. [2020-08-18 12:16:24,963 INFO L268 CegarLoopResult]: For program point L364(line 364) no Hoare annotation was computed. [2020-08-18 12:16:24,963 INFO L268 CegarLoopResult]: For program point L331(line 331) no Hoare annotation was computed. [2020-08-18 12:16:24,964 INFO L268 CegarLoopResult]: For program point L232(lines 232 240) no Hoare annotation was computed. [2020-08-18 12:16:24,964 INFO L268 CegarLoopResult]: For program point mainErr17ASSERT_VIOLATIONERROR_FUNCTION(line 376) no Hoare annotation was computed. [2020-08-18 12:16:24,964 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 124) no Hoare annotation was computed. [2020-08-18 12:16:24,964 INFO L268 CegarLoopResult]: For program point L150(lines 150 158) no Hoare annotation was computed. [2020-08-18 12:16:24,964 INFO L268 CegarLoopResult]: For program point L307(line 307) no Hoare annotation was computed. [2020-08-18 12:16:24,964 INFO L268 CegarLoopResult]: For program point L18(lines 18 399) no Hoare annotation was computed. [2020-08-18 12:16:24,965 INFO L268 CegarLoopResult]: For program point L274(lines 274 389) no Hoare annotation was computed. [2020-08-18 12:16:24,965 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 295) no Hoare annotation was computed. [2020-08-18 12:16:24,965 INFO L268 CegarLoopResult]: For program point L68(lines 68 92) no Hoare annotation was computed. [2020-08-18 12:16:24,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 12:16:24 BoogieIcfgContainer [2020-08-18 12:16:24,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 12:16:24,993 INFO L168 Benchmark]: Toolchain (without parser) took 6427.85 ms. Allocated memory was 139.5 MB in the beginning and 281.5 MB in the end (delta: 142.1 MB). Free memory was 101.7 MB in the beginning and 167.7 MB in the end (delta: -66.1 MB). Peak memory consumption was 76.0 MB. Max. memory is 7.1 GB. [2020-08-18 12:16:24,994 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 12:16:24,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.10 ms. Allocated memory is still 139.5 MB. Free memory was 101.5 MB in the beginning and 88.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-18 12:16:24,996 INFO L168 Benchmark]: Boogie Preprocessor took 153.06 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 88.7 MB in the beginning and 179.5 MB in the end (delta: -90.8 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-18 12:16:24,996 INFO L168 Benchmark]: RCFGBuilder took 539.21 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 153.6 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-08-18 12:16:24,997 INFO L168 Benchmark]: TraceAbstraction took 5385.13 ms. Allocated memory was 202.4 MB in the beginning and 281.5 MB in the end (delta: 79.2 MB). Free memory was 152.9 MB in the beginning and 167.7 MB in the end (delta: -14.8 MB). Peak memory consumption was 64.4 MB. Max. memory is 7.1 GB. [2020-08-18 12:16:25,000 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 345.10 ms. Allocated memory is still 139.5 MB. Free memory was 101.5 MB in the beginning and 88.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.06 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 88.7 MB in the beginning and 179.5 MB in the end (delta: -90.8 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 539.21 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 153.6 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5385.13 ms. Allocated memory was 202.4 MB in the beginning and 281.5 MB in the end (delta: 79.2 MB). Free memory was 152.9 MB in the beginning and 167.7 MB in the end (delta: -14.8 MB). Peak memory consumption was 64.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 343]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 364]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 174]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 186]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 307]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 222]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 234]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 331]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 295]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 124]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 276]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 376]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 82]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 152]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 140]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 112]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 70]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 1 <= main__t && main__t <= main__tagbuf_len - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: main__t + 1 <= main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: main__t + 1 <= main__tagbuf_len && 0 <= main__t - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 280]: Loop Invariant Derived loop invariant: (main__t + 1 <= main__tagbuf_len && !(__VERIFIER_assert__cond == 0)) && 0 <= main__t - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 84 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 838 SDtfs, 1435 SDslu, 856 SDs, 0 SdLazy, 2218 SolverSat, 136 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 67 SyntacticMatches, 7 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, 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, 18 MinimizatonAttempts, 295 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 14 NumberOfFragments, 64 HoareAnnotationTreeSize, 9 FomulaSimplifications, 145186 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 6289 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 300 NumberOfCodeBlocks, 300 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 282 ConstructedInterpolants, 0 QuantifiedInterpolants, 13120 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...