/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=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:54:20,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:54:20,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:54:20,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:54:20,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:54:20,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:54:20,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:54:20,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:54:20,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:54:20,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:54:20,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:54:20,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:54:20,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:54:20,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:54:20,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:54:20,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:54:20,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:54:20,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:54:20,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:54:20,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:54:20,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:54:20,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:54:20,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:54:20,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:54:20,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:54:20,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:54:20,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:54:20,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:54:20,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:54:20,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:54:20,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:54:20,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:54:20,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:54:20,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:54:20,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:54:20,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:54:20,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:54:20,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:54:20,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:54:20,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:54:20,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:54:20,803 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 17:54:20,843 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:54:20,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:54:20,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:54:20,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:54:20,846 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:54:20,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:54:20,846 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:54:20,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:54:20,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:54:20,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:54:20,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:54:20,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:54:20,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:54:20,849 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:54:20,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:54:20,849 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:54:20,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:54:20,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:54:20,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:54:20,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:54:20,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:54:20,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:54:20,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:54:20,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:54:20,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:54:20,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:54:20,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:54:20,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:54:20,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:54:20,852 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=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 17:54:21,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:54:21,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:54:21,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:54:21,184 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:54:21,184 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:54:21,185 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-08-18 17:54:21,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/697ca21b2/ebcee2e005cd4cdf9b87b61d3fa1483a/FLAGbb5712098 [2020-08-18 17:54:21,721 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:54:21,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-08-18 17:54:21,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/697ca21b2/ebcee2e005cd4cdf9b87b61d3fa1483a/FLAGbb5712098 [2020-08-18 17:54:22,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/697ca21b2/ebcee2e005cd4cdf9b87b61d3fa1483a [2020-08-18 17:54:22,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:54:22,100 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:54:22,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:54:22,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:54:22,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:54:22,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:54:22" (1/1) ... [2020-08-18 17:54:22,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4391f3d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:54:22, skipping insertion in model container [2020-08-18 17:54:22,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:54:22" (1/1) ... [2020-08-18 17:54:22,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:54:22,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:54:22,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:54:22,308 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:54:22,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:54:22,341 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:54:22,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:54:22 WrapperNode [2020-08-18 17:54:22,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:54:22,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:54:22,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:54:22,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:54:22,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:54:22" (1/1) ... [2020-08-18 17:54:22,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:54:22" (1/1) ... [2020-08-18 17:54:22,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:54:22" (1/1) ... [2020-08-18 17:54:22,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:54:22" (1/1) ... [2020-08-18 17:54:22,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:54:22" (1/1) ... [2020-08-18 17:54:22,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:54:22" (1/1) ... [2020-08-18 17:54:22,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:54:22" (1/1) ... [2020-08-18 17:54:22,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:54:22,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:54:22,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:54:22,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:54:22,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:54:22" (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 17:54:22,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:54:22,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:54:22,528 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-18 17:54:22,528 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:54:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:54:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:54:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 17:54:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:54:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:54:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:54:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:54:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:54:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:54:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:54:22,793 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:54:22,794 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 17:54:22,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:54:22 BoogieIcfgContainer [2020-08-18 17:54:22,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:54:22,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:54:22,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:54:22,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:54:22,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:54:22" (1/3) ... [2020-08-18 17:54:22,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719f90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:54:22, skipping insertion in model container [2020-08-18 17:54:22,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:54:22" (2/3) ... [2020-08-18 17:54:22,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719f90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:54:22, skipping insertion in model container [2020-08-18 17:54:22,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:54:22" (3/3) ... [2020-08-18 17:54:22,813 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-08-18 17:54:22,831 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:54:22,837 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:54:22,850 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:54:22,873 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:54:22,873 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:54:22,873 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:54:22,874 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:54:22,874 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:54:22,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:54:22,874 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:54:22,874 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:54:22,891 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-08-18 17:54:22,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 17:54:22,897 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:54:22,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:54:22,898 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:54:22,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:54:22,903 INFO L82 PathProgramCache]: Analyzing trace with hash 149844724, now seen corresponding path program 1 times [2020-08-18 17:54:22,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:54:22,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705732333] [2020-08-18 17:54:22,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:54:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:23,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:54:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:23,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-18 17:54:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:23,105 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 17:54:23,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705732333] [2020-08-18 17:54:23,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:54:23,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 17:54:23,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478124240] [2020-08-18 17:54:23,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 17:54:23,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:54:23,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 17:54:23,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 17:54:23,126 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-08-18 17:54:23,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:54:23,222 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-08-18 17:54:23,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 17:54:23,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-08-18 17:54:23,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:54:23,234 INFO L225 Difference]: With dead ends: 35 [2020-08-18 17:54:23,234 INFO L226 Difference]: Without dead ends: 17 [2020-08-18 17:54:23,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 17:54:23,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-08-18 17:54:23,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-08-18 17:54:23,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-08-18 17:54:23,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-08-18 17:54:23,277 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2020-08-18 17:54:23,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:54:23,278 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-08-18 17:54:23,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 17:54:23,279 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-08-18 17:54:23,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 17:54:23,280 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:54:23,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:54:23,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:54:23,281 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:54:23,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:54:23,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1249419983, now seen corresponding path program 1 times [2020-08-18 17:54:23,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:54:23,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589019445] [2020-08-18 17:54:23,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:54:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:23,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:54:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:23,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:54:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:23,499 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 17:54:23,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589019445] [2020-08-18 17:54:23,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:54:23,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:54:23,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81467977] [2020-08-18 17:54:23,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:54:23,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:54:23,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:54:23,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:54:23,504 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2020-08-18 17:54:23,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:54:23,577 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-08-18 17:54:23,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:54:23,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-18 17:54:23,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:54:23,579 INFO L225 Difference]: With dead ends: 27 [2020-08-18 17:54:23,579 INFO L226 Difference]: Without dead ends: 19 [2020-08-18 17:54:23,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:54:23,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-18 17:54:23,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-08-18 17:54:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-18 17:54:23,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-08-18 17:54:23,588 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-08-18 17:54:23,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:54:23,588 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-08-18 17:54:23,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:54:23,589 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-08-18 17:54:23,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 17:54:23,590 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:54:23,590 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:54:23,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:54:23,591 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:54:23,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:54:23,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1840889772, now seen corresponding path program 1 times [2020-08-18 17:54:23,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:54:23,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471409025] [2020-08-18 17:54:23,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:54:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:23,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:54:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:23,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 17:54:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:23,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:54:23,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471409025] [2020-08-18 17:54:23,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:54:23,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 17:54:23,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555556963] [2020-08-18 17:54:23,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:54:23,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:54:23,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:54:23,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:54:23,809 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2020-08-18 17:54:23,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:54:23,910 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-08-18 17:54:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 17:54:23,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-18 17:54:23,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:54:23,912 INFO L225 Difference]: With dead ends: 29 [2020-08-18 17:54:23,913 INFO L226 Difference]: Without dead ends: 21 [2020-08-18 17:54:23,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-18 17:54:23,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-18 17:54:23,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-18 17:54:23,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-18 17:54:23,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-08-18 17:54:23,920 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-08-18 17:54:23,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:54:23,920 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-08-18 17:54:23,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:54:23,921 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-08-18 17:54:23,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 17:54:23,921 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:54:23,922 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:54:23,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:54:23,922 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:54:23,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:54:23,923 INFO L82 PathProgramCache]: Analyzing trace with hash -488804505, now seen corresponding path program 2 times [2020-08-18 17:54:23,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:54:23,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121130544] [2020-08-18 17:54:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:54:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:24,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:54:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:24,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:54:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:54:24,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121130544] [2020-08-18 17:54:24,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:54:24,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 17:54:24,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075041020] [2020-08-18 17:54:24,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 17:54:24,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:54:24,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 17:54:24,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:54:24,052 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 7 states. [2020-08-18 17:54:24,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:54:24,174 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-08-18 17:54:24,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 17:54:24,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-08-18 17:54:24,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:54:24,176 INFO L225 Difference]: With dead ends: 31 [2020-08-18 17:54:24,176 INFO L226 Difference]: Without dead ends: 23 [2020-08-18 17:54:24,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:54:24,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-18 17:54:24,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-08-18 17:54:24,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-18 17:54:24,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-08-18 17:54:24,183 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-08-18 17:54:24,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:54:24,184 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-08-18 17:54:24,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 17:54:24,184 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-08-18 17:54:24,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 17:54:24,185 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:54:24,185 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:54:24,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:54:24,186 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:54:24,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:54:24,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1647043486, now seen corresponding path program 3 times [2020-08-18 17:54:24,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:54:24,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801890321] [2020-08-18 17:54:24,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:54:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:24,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:54:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:24,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:54:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:54:24,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801890321] [2020-08-18 17:54:24,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:54:24,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 17:54:24,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60541978] [2020-08-18 17:54:24,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:54:24,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:54:24,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:54:24,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:54:24,353 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 9 states. [2020-08-18 17:54:24,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:54:24,467 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-08-18 17:54:24,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 17:54:24,474 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-08-18 17:54:24,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:54:24,475 INFO L225 Difference]: With dead ends: 33 [2020-08-18 17:54:24,475 INFO L226 Difference]: Without dead ends: 25 [2020-08-18 17:54:24,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-08-18 17:54:24,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-18 17:54:24,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-18 17:54:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-18 17:54:24,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-08-18 17:54:24,481 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2020-08-18 17:54:24,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:54:24,482 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-08-18 17:54:24,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:54:24,482 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-08-18 17:54:24,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 17:54:24,483 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:54:24,483 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:54:24,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 17:54:24,484 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:54:24,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:54:24,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1976792733, now seen corresponding path program 4 times [2020-08-18 17:54:24,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:54:24,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875161944] [2020-08-18 17:54:24,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:54:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:24,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:54:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:24,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 17:54:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:54:24,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875161944] [2020-08-18 17:54:24,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:54:24,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 17:54:24,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416723304] [2020-08-18 17:54:24,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:54:24,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:54:24,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:54:24,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:54:24,613 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 9 states. [2020-08-18 17:54:24,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:54:24,733 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-08-18 17:54:24,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 17:54:24,733 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-08-18 17:54:24,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:54:24,734 INFO L225 Difference]: With dead ends: 35 [2020-08-18 17:54:24,735 INFO L226 Difference]: Without dead ends: 27 [2020-08-18 17:54:24,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-08-18 17:54:24,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-18 17:54:24,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-08-18 17:54:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-18 17:54:24,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-08-18 17:54:24,741 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2020-08-18 17:54:24,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:54:24,742 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-08-18 17:54:24,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:54:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-08-18 17:54:24,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 17:54:24,743 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:54:24,743 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:54:24,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 17:54:24,743 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:54:24,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:54:24,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1264922136, now seen corresponding path program 5 times [2020-08-18 17:54:24,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:54:24,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723150370] [2020-08-18 17:54:24,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:54:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:24,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:54:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:24,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 17:54:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:54:24,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723150370] [2020-08-18 17:54:24,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:54:24,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 17:54:24,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479713126] [2020-08-18 17:54:24,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:54:24,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:54:24,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:54:24,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:54:24,869 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 10 states. [2020-08-18 17:54:25,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:54:25,033 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-08-18 17:54:25,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 17:54:25,034 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-08-18 17:54:25,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:54:25,035 INFO L225 Difference]: With dead ends: 37 [2020-08-18 17:54:25,036 INFO L226 Difference]: Without dead ends: 29 [2020-08-18 17:54:25,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-08-18 17:54:25,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-18 17:54:25,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-18 17:54:25,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-18 17:54:25,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-08-18 17:54:25,043 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2020-08-18 17:54:25,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:54:25,043 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-08-18 17:54:25,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:54:25,044 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-08-18 17:54:25,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 17:54:25,045 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:54:25,045 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:54:25,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 17:54:25,045 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:54:25,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:54:25,046 INFO L82 PathProgramCache]: Analyzing trace with hash 57078483, now seen corresponding path program 6 times [2020-08-18 17:54:25,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:54:25,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938859890] [2020-08-18 17:54:25,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:54:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:25,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:54:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:25,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 17:54:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:54:25,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938859890] [2020-08-18 17:54:25,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:54:25,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 17:54:25,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326784557] [2020-08-18 17:54:25,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 17:54:25,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:54:25,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 17:54:25,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-08-18 17:54:25,223 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 11 states. [2020-08-18 17:54:25,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:54:25,409 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-08-18 17:54:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 17:54:25,409 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-08-18 17:54:25,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:54:25,410 INFO L225 Difference]: With dead ends: 39 [2020-08-18 17:54:25,410 INFO L226 Difference]: Without dead ends: 31 [2020-08-18 17:54:25,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-08-18 17:54:25,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-18 17:54:25,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-08-18 17:54:25,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-18 17:54:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-08-18 17:54:25,416 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2020-08-18 17:54:25,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:54:25,416 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-08-18 17:54:25,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 17:54:25,417 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-08-18 17:54:25,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 17:54:25,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:54:25,418 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:54:25,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 17:54:25,418 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:54:25,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:54:25,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1039502130, now seen corresponding path program 7 times [2020-08-18 17:54:25,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:54:25,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060413076] [2020-08-18 17:54:25,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:54:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:25,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:54:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:25,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 17:54:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:25,555 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:54:25,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060413076] [2020-08-18 17:54:25,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:54:25,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 17:54:25,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843126012] [2020-08-18 17:54:25,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 17:54:25,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:54:25,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 17:54:25,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:54:25,558 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 12 states. [2020-08-18 17:54:25,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:54:25,725 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-08-18 17:54:25,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 17:54:25,726 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-08-18 17:54:25,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:54:25,727 INFO L225 Difference]: With dead ends: 41 [2020-08-18 17:54:25,727 INFO L226 Difference]: Without dead ends: 33 [2020-08-18 17:54:25,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-08-18 17:54:25,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-18 17:54:25,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-18 17:54:25,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-18 17:54:25,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-08-18 17:54:25,739 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2020-08-18 17:54:25,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:54:25,739 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-08-18 17:54:25,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 17:54:25,739 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-08-18 17:54:25,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-18 17:54:25,740 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:54:25,740 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:54:25,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 17:54:25,744 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:54:25,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:54:25,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1708483593, now seen corresponding path program 8 times [2020-08-18 17:54:25,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:54:25,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323829884] [2020-08-18 17:54:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:54:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:25,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:54:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:25,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 17:54:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:54:25,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323829884] [2020-08-18 17:54:25,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:54:25,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 17:54:25,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854989558] [2020-08-18 17:54:25,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 17:54:25,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:54:25,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 17:54:25,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-08-18 17:54:25,955 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 13 states. [2020-08-18 17:54:26,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:54:26,183 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-08-18 17:54:26,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 17:54:26,184 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-08-18 17:54:26,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:54:26,185 INFO L225 Difference]: With dead ends: 43 [2020-08-18 17:54:26,185 INFO L226 Difference]: Without dead ends: 35 [2020-08-18 17:54:26,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-08-18 17:54:26,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-18 17:54:26,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-18 17:54:26,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-18 17:54:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-08-18 17:54:26,200 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2020-08-18 17:54:26,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:54:26,201 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-08-18 17:54:26,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 17:54:26,202 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-08-18 17:54:26,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-18 17:54:26,207 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:54:26,208 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:54:26,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 17:54:26,208 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:54:26,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:54:26,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1117876356, now seen corresponding path program 9 times [2020-08-18 17:54:26,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:54:26,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829211872] [2020-08-18 17:54:26,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:54:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:26,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:54:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:26,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 17:54:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:26,416 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:54:26,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829211872] [2020-08-18 17:54:26,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:54:26,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 17:54:26,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177383089] [2020-08-18 17:54:26,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 17:54:26,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:54:26,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 17:54:26,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-08-18 17:54:26,418 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 15 states. [2020-08-18 17:54:26,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:54:26,652 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-08-18 17:54:26,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 17:54:26,652 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2020-08-18 17:54:26,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:54:26,653 INFO L225 Difference]: With dead ends: 45 [2020-08-18 17:54:26,654 INFO L226 Difference]: Without dead ends: 37 [2020-08-18 17:54:26,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-08-18 17:54:26,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-18 17:54:26,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-18 17:54:26,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-18 17:54:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-08-18 17:54:26,660 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2020-08-18 17:54:26,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:54:26,660 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-08-18 17:54:26,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 17:54:26,660 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-08-18 17:54:26,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 17:54:26,661 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:54:26,661 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:54:26,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 17:54:26,662 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:54:26,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:54:26,662 INFO L82 PathProgramCache]: Analyzing trace with hash 480004671, now seen corresponding path program 10 times [2020-08-18 17:54:26,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:54:26,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068918489] [2020-08-18 17:54:26,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:54:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:27,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:54:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:27,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 17:54:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:54:27,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068918489] [2020-08-18 17:54:27,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:54:27,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-18 17:54:27,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330278980] [2020-08-18 17:54:27,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-18 17:54:27,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:54:27,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-18 17:54:27,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-08-18 17:54:27,283 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 21 states. [2020-08-18 17:54:27,636 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2020-08-18 17:54:27,954 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 110 [2020-08-18 17:54:28,234 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2020-08-18 17:54:28,574 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 106 [2020-08-18 17:54:28,820 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-08-18 17:54:29,122 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 98 [2020-08-18 17:54:29,345 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-08-18 17:54:29,629 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-08-18 17:54:29,817 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-08-18 17:54:30,065 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-08-18 17:54:30,225 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-08-18 17:54:30,465 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-08-18 17:54:30,614 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-08-18 17:54:30,838 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-08-18 17:54:31,119 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-08-18 17:54:31,375 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-08-18 17:54:31,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:54:31,856 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-08-18 17:54:31,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 17:54:31,856 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 36 [2020-08-18 17:54:31,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:54:31,858 INFO L225 Difference]: With dead ends: 44 [2020-08-18 17:54:31,859 INFO L226 Difference]: Without dead ends: 39 [2020-08-18 17:54:31,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=457, Invalid=1523, Unknown=0, NotChecked=0, Total=1980 [2020-08-18 17:54:31,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-18 17:54:31,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-18 17:54:31,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-18 17:54:31,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2020-08-18 17:54:31,870 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2020-08-18 17:54:31,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:54:31,871 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2020-08-18 17:54:31,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-18 17:54:31,871 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2020-08-18 17:54:31,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-18 17:54:31,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:54:31,872 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:54:31,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 17:54:31,872 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:54:31,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:54:31,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1665638714, now seen corresponding path program 11 times [2020-08-18 17:54:31,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:54:31,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342997571] [2020-08-18 17:54:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:54:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:32,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:54:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:32,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 17:54:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:54:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 112 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:54:32,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342997571] [2020-08-18 17:54:32,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:54:32,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 17:54:32,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993210716] [2020-08-18 17:54:32,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 17:54:32,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:54:32,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 17:54:32,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-08-18 17:54:32,062 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 16 states. [2020-08-18 17:54:32,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:54:32,161 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-08-18 17:54:32,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 17:54:32,161 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-08-18 17:54:32,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:54:32,162 INFO L225 Difference]: With dead ends: 39 [2020-08-18 17:54:32,162 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 17:54:32,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2020-08-18 17:54:32,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 17:54:32,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 17:54:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 17:54:32,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 17:54:32,164 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-08-18 17:54:32,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:54:32,165 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 17:54:32,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 17:54:32,165 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 17:54:32,165 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 17:54:32,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 17:54:32,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 17:54:32,925 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 106 [2020-08-18 17:54:32,943 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 17:54:32,943 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-18 17:54:32,943 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 17:54:32,943 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 17:54:32,943 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 17:54:32,943 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 17:54:32,943 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 17:54:32,944 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-08-18 17:54:32,944 INFO L268 CegarLoopResult]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2020-08-18 17:54:32,944 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2020-08-18 17:54:32,944 INFO L268 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2020-08-18 17:54:32,944 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2020-08-18 17:54:32,944 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2020-08-18 17:54:32,944 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2020-08-18 17:54:32,944 INFO L264 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2020-08-18 17:54:32,944 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 38) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-18 17:54:32,944 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2020-08-18 17:54:32,945 INFO L264 CegarLoopResult]: At program point L26-3(lines 26 28) the Hoare annotation is: (let ((.cse0 (= |main_~#ad1~0.offset| 0)) (.cse3 (select |#memory_int| |main_~#ad1~0.base|)) (.cse4 (* main_~i~0 8)) (.cse2 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (or (let ((.cse1 (+ main_~i~0 7))) (and .cse0 (<= .cse1 .cse2) (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 56)) .cse1) (<= .cse2 .cse1))) (let ((.cse5 (+ main_~i~0 4))) (and .cse0 (= .cse5 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 32))) (<= .cse5 .cse2) (<= .cse2 .cse5))) (and .cse0 (<= .cse2 main_~i~0) (= main_~i~0 (select .cse3 (+ .cse4 |main_~#ad1~0.offset|)))) (let ((.cse6 (+ main_~i~0 10))) (and (= .cse6 .cse2) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 80)) .cse6))) (let ((.cse7 (+ main_~i~0 3))) (and (= .cse7 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 24))) .cse0 (<= .cse2 .cse7) (<= .cse7 .cse2))) (let ((.cse8 (+ main_~i~0 8))) (and .cse0 (<= .cse8 .cse2) (= .cse8 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 64))) (<= .cse2 .cse8))) (let ((.cse9 (+ main_~i~0 1))) (and (<= .cse9 .cse2) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 8)) .cse9) (<= .cse2 .cse9))) (let ((.cse10 (+ main_~i~0 5))) (and (<= .cse2 .cse10) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 40)) .cse10) (<= .cse10 .cse2))) (let ((.cse11 (+ main_~i~0 9))) (and (<= .cse11 .cse2) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 72)) .cse11) (<= .cse2 .cse11))) (let ((.cse12 (+ main_~i~0 2))) (and .cse0 (<= .cse12 .cse2) (= .cse12 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 16))) (<= .cse2 .cse12))) (let ((.cse13 (+ main_~i~0 6))) (and .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 48)) .cse13) (<= .cse13 .cse2) (<= .cse2 .cse13))))) [2020-08-18 17:54:32,945 INFO L264 CegarLoopResult]: At program point L26-4(lines 26 28) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|)))) [2020-08-18 17:54:32,945 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2020-08-18 17:54:32,946 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 9 12) no Hoare annotation was computed. [2020-08-18 17:54:32,946 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2020-08-18 17:54:32,959 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,960 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,960 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,961 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,961 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,961 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,961 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,962 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,962 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,962 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,963 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,963 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,963 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,963 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,964 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,964 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,964 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,964 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,965 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,965 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,965 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,965 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,965 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,966 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,966 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,966 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,966 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,967 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,967 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,967 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,967 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,976 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,976 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,977 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,977 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,977 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,977 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,978 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,978 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,978 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,978 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,979 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,979 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,979 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,979 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,980 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,980 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,980 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,980 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,981 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,981 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,981 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,981 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,981 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,982 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,982 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,982 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,982 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,983 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,983 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,983 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,983 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:32,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:54:32 BoogieIcfgContainer [2020-08-18 17:54:32,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:54:32,989 INFO L168 Benchmark]: Toolchain (without parser) took 10889.75 ms. Allocated memory was 147.8 MB in the beginning and 310.9 MB in the end (delta: 163.1 MB). Free memory was 102.3 MB in the beginning and 147.8 MB in the end (delta: -45.5 MB). Peak memory consumption was 117.6 MB. Max. memory is 7.1 GB. [2020-08-18 17:54:32,990 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 17:54:32,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.99 ms. Allocated memory is still 147.8 MB. Free memory was 102.1 MB in the beginning and 91.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-18 17:54:32,992 INFO L168 Benchmark]: Boogie Preprocessor took 119.31 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 91.8 MB in the beginning and 181.8 MB in the end (delta: -89.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-18 17:54:32,992 INFO L168 Benchmark]: RCFGBuilder took 337.07 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 167.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-08-18 17:54:32,993 INFO L168 Benchmark]: TraceAbstraction took 10181.39 ms. Allocated memory was 204.5 MB in the beginning and 310.9 MB in the end (delta: 106.4 MB). Free memory was 167.0 MB in the beginning and 147.8 MB in the end (delta: 19.2 MB). Peak memory consumption was 125.6 MB. Max. memory is 7.1 GB. [2020-08-18 17:54:32,997 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 240.99 ms. Allocated memory is still 147.8 MB. Free memory was 102.1 MB in the beginning and 91.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.31 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 91.8 MB in the beginning and 181.8 MB in the end (delta: -89.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 337.07 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 167.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10181.39 ms. Allocated memory was 204.5 MB in the beginning and 310.9 MB in the end (delta: 106.4 MB). Free memory was 167.0 MB in the beginning and 147.8 MB in the end (delta: 19.2 MB). Peak memory consumption was 125.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant [2020-08-18 17:54:33,009 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,010 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,010 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,010 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,011 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,011 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,011 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,011 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,011 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,012 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,012 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,012 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,012 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,012 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,013 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,013 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,013 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,013 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,013 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,014 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,014 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,014 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,014 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,014 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,015 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,015 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,015 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,015 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,015 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,016 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,016 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,018 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,018 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,018 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,019 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,019 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,019 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,019 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,020 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,020 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,020 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,020 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,021 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,021 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,021 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,021 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,021 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,021 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,022 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,022 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,022 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,022 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,022 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,023 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,023 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,023 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,023 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,023 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,024 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,024 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,024 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 17:54:33,024 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((((((((((ad1 == 0 && i + 7 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 56] == i + 7) && unknown-#memory_int-unknown[pa][pa] <= i + 7) || (((ad1 == 0 && i + 4 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 32]) && i + 4 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[pa][pa] <= i + 4)) || ((ad1 == 0 && unknown-#memory_int-unknown[pa][pa] <= i) && i == unknown-#memory_int-unknown[ad1][i * 8 + ad1])) || ((i + 10 == unknown-#memory_int-unknown[pa][pa] && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 80] == i + 10)) || (((i + 3 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 24] && ad1 == 0) && unknown-#memory_int-unknown[pa][pa] <= i + 3) && i + 3 <= unknown-#memory_int-unknown[pa][pa])) || (((ad1 == 0 && i + 8 <= unknown-#memory_int-unknown[pa][pa]) && i + 8 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 64]) && unknown-#memory_int-unknown[pa][pa] <= i + 8)) || (((i + 1 <= unknown-#memory_int-unknown[pa][pa] && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 8] == i + 1) && unknown-#memory_int-unknown[pa][pa] <= i + 1)) || (((unknown-#memory_int-unknown[pa][pa] <= i + 5 && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 40] == i + 5) && i + 5 <= unknown-#memory_int-unknown[pa][pa])) || (((i + 9 <= unknown-#memory_int-unknown[pa][pa] && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 72] == i + 9) && unknown-#memory_int-unknown[pa][pa] <= i + 9)) || (((ad1 == 0 && i + 2 <= unknown-#memory_int-unknown[pa][pa]) && i + 2 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 16]) && unknown-#memory_int-unknown[pa][pa] <= i + 2)) || (((ad1 == 0 && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 48] == i + 6) && i + 6 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[pa][pa] <= i + 6) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.2s, OverallIterations: 13, TraceHistogramMax: 12, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 165 SDtfs, 122 SDslu, 661 SDs, 0 SdLazy, 896 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 255 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=12, 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, 13 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 20 PreInvPairs, 32 NumberOfFragments, 406 HoareAnnotationTreeSize, 20 FomulaSimplifications, 343 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 1565 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 339 NumberOfCodeBlocks, 339 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 326 ConstructedInterpolants, 0 QuantifiedInterpolants, 68375 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 112/572 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...