/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:21:59,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:21:59,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:21:59,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:21:59,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:21:59,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:21:59,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:21:59,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:21:59,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:21:59,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:21:59,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:21:59,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:21:59,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:21:59,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:21:59,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:21:59,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:21:59,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:21:59,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:21:59,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:21:59,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:21:59,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:21:59,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:21:59,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:21:59,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:21:59,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:21:59,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:21:59,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:21:59,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:21:59,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:21:59,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:21:59,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:21:59,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:21:59,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:21:59,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:21:59,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:21:59,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:21:59,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:21:59,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:21:59,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:21:59,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:21:59,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:21:59,866 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:21:59,923 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:21:59,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:21:59,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:21:59,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:21:59,929 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:21:59,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:21:59,930 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:21:59,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:21:59,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:21:59,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:21:59,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:21:59,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:21:59,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:21:59,934 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:21:59,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:21:59,935 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:21:59,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:21:59,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:21:59,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:21:59,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:21:59,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:21:59,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:21:59,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:21:59,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:21:59,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:21:59,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:21:59,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:21:59,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:21:59,937 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:21:59,938 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:22:00,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:22:00,452 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:22:00,456 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:22:00,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:22:00,458 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:22:00,460 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2020-09-24 17:22:00,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4efb3fee0/dcd4bffd055547a78321e1544b2758c3/FLAGe7dc8049d [2020-09-24 17:22:01,052 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:22:01,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested9.i [2020-09-24 17:22:01,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4efb3fee0/dcd4bffd055547a78321e1544b2758c3/FLAGe7dc8049d [2020-09-24 17:22:01,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4efb3fee0/dcd4bffd055547a78321e1544b2758c3 [2020-09-24 17:22:01,403 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:22:01,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:22:01,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:22:01,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:22:01,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:22:01,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:22:01" (1/1) ... [2020-09-24 17:22:01,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4de5375c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:01, skipping insertion in model container [2020-09-24 17:22:01,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:22:01" (1/1) ... [2020-09-24 17:22:01,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:22:01,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:22:01,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:22:01,665 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:22:01,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:22:01,707 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:22:01,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:01 WrapperNode [2020-09-24 17:22:01,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:22:01,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:22:01,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:22:01,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:22:01,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:01" (1/1) ... [2020-09-24 17:22:01,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:01" (1/1) ... [2020-09-24 17:22:01,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:01" (1/1) ... [2020-09-24 17:22:01,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:01" (1/1) ... [2020-09-24 17:22:01,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:01" (1/1) ... [2020-09-24 17:22:01,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:01" (1/1) ... [2020-09-24 17:22:01,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:01" (1/1) ... [2020-09-24 17:22:01,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:22:01,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:22:01,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:22:01,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:22:01,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:22:01,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:22:01,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:22:01,898 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 17:22:01,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 17:22:01,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:22:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:22:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:22:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 17:22:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 17:22:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:22:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:22:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:22:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:22:02,207 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:22:02,208 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 17:22:02,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:22:02 BoogieIcfgContainer [2020-09-24 17:22:02,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:22:02,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:22:02,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:22:02,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:22:02,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:22:01" (1/3) ... [2020-09-24 17:22:02,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f64963f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:22:02, skipping insertion in model container [2020-09-24 17:22:02,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:01" (2/3) ... [2020-09-24 17:22:02,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f64963f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:22:02, skipping insertion in model container [2020-09-24 17:22:02,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:22:02" (3/3) ... [2020-09-24 17:22:02,226 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2020-09-24 17:22:02,244 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:22:02,254 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:22:02,279 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:22:02,337 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:22:02,337 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:22:02,337 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:22:02,337 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:22:02,338 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:22:02,338 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:22:02,338 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:22:02,338 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:22:02,366 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-09-24 17:22:02,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 17:22:02,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:22:02,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:22:02,377 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:22:02,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:22:02,385 INFO L82 PathProgramCache]: Analyzing trace with hash -980226087, now seen corresponding path program 1 times [2020-09-24 17:22:02,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:22:02,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124323222] [2020-09-24 17:22:02,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:22:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:02,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:02,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:03,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:03,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:03,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:03,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:03,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:03,543 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:03,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 17:22:03,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 17:22:03,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 994 [2020-09-24 17:22:03,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:03,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:22:03,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 17:22:03,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:22:03,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:22:03,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:22:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:03,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:03,716 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:03,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:22:03,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:03,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:22:03,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:03,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:22:03,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:22:03,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:22:03,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:22:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:22:03,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124323222] [2020-09-24 17:22:03,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:22:03,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 17:22:03,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553462156] [2020-09-24 17:22:03,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:22:03,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:22:03,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:22:03,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:22:03,785 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 9 states. [2020-09-24 17:22:04,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:22:04,411 INFO L93 Difference]: Finished difference Result 112 states and 143 transitions. [2020-09-24 17:22:04,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 17:22:04,413 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-24 17:22:04,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:22:04,431 INFO L225 Difference]: With dead ends: 112 [2020-09-24 17:22:04,432 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 17:22:04,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:22:04,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 17:22:04,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2020-09-24 17:22:04,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 17:22:04,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-09-24 17:22:04,519 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 34 [2020-09-24 17:22:04,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:22:04,520 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-09-24 17:22:04,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:22:04,521 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-09-24 17:22:04,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 17:22:04,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:22:04,526 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:22:04,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:22:04,526 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:22:04,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:22:04,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1377800797, now seen corresponding path program 1 times [2020-09-24 17:22:04,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:22:04,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701690847] [2020-09-24 17:22:04,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:22:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:04,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:04,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:04,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:04,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:05,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:05,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:05,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:05,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:05,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:06,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:06,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:06,452 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:06,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 17:22:06,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 17:22:06,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1908 [2020-09-24 17:22:06,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:06,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:22:06,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 17:22:06,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 17:22:06,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:22:06,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:22:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:06,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:06,540 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:06,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:22:06,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:06,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:22:06,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:22:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:22:06,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:22:06,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:22:06,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 17:22:06,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701690847] [2020-09-24 17:22:06,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:22:06,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 17:22:06,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341908789] [2020-09-24 17:22:06,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:22:06,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:22:06,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:22:06,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:22:06,559 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 8 states. [2020-09-24 17:22:06,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:22:06,980 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2020-09-24 17:22:06,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 17:22:06,980 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-09-24 17:22:06,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:22:06,984 INFO L225 Difference]: With dead ends: 107 [2020-09-24 17:22:06,984 INFO L226 Difference]: Without dead ends: 105 [2020-09-24 17:22:06,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:22:06,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-24 17:22:06,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 65. [2020-09-24 17:22:06,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 17:22:06,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2020-09-24 17:22:07,000 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 40 [2020-09-24 17:22:07,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:22:07,000 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2020-09-24 17:22:07,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:22:07,001 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2020-09-24 17:22:07,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 17:22:07,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:22:07,003 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:22:07,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:22:07,003 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:22:07,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:22:07,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1348236411, now seen corresponding path program 1 times [2020-09-24 17:22:07,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:22:07,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719535918] [2020-09-24 17:22:07,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:22:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:07,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:07,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:07,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:07,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:07,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:07,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:07,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:07,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:07,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:08,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:08,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:08,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:08,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:08,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:08,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:08,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:08,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:09,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:10,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:10,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:10,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:12,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:12,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:12,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:12,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:12,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:12,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:13,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:13,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:13,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:13,275 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:13,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 17:22:13,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 30 [2020-09-24 17:22:13,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6257 [2020-09-24 17:22:13,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:13,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 17:22:13,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 17:22:13,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:22:13,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:22:13,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:22:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:13,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:13,394 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:13,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:22:13,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:13,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:22:13,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:13,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:22:13,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:22:13,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:22:13,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:22:13,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 17:22:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:13,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:13,410 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:13,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:22:13,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:13,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:22:13,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:13,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:22:13,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:22:13,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:22:13,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:22:13,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:22:13,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719535918] [2020-09-24 17:22:13,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:22:13,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 17:22:13,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560398240] [2020-09-24 17:22:13,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 17:22:13,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:22:13,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 17:22:13,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-24 17:22:13,423 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 12 states. [2020-09-24 17:22:14,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:22:14,104 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2020-09-24 17:22:14,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 17:22:14,105 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-09-24 17:22:14,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:22:14,110 INFO L225 Difference]: With dead ends: 112 [2020-09-24 17:22:14,110 INFO L226 Difference]: Without dead ends: 110 [2020-09-24 17:22:14,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2020-09-24 17:22:14,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-24 17:22:14,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 90. [2020-09-24 17:22:14,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-24 17:22:14,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 100 transitions. [2020-09-24 17:22:14,145 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 100 transitions. Word has length 49 [2020-09-24 17:22:14,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:22:14,151 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 100 transitions. [2020-09-24 17:22:14,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 17:22:14,151 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions. [2020-09-24 17:22:14,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 17:22:14,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:22:14,154 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:22:14,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:22:14,155 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:22:14,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:22:14,155 INFO L82 PathProgramCache]: Analyzing trace with hash 918934774, now seen corresponding path program 1 times [2020-09-24 17:22:14,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:22:14,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201677568] [2020-09-24 17:22:14,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:22:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:14,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:14,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:14,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:14,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:14,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:14,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:14,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:14,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:14,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:15,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:15,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:15,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:15,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:15,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:15,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:15,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:16,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:16,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:16,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:16,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:16,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:17,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:17,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:17,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:19,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:19,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:19,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:19,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:19,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:19,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:20,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:20,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:22,517 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:22,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 17:22:22,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 32 [2020-09-24 17:22:22,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8344 [2020-09-24 17:22:22,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:22,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:22:22,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 17:22:22,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 17:22:22,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:22:22,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:22:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:22,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:22,656 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:22,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:22:22,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:22,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:22:22,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:22,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:22:22,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:22:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:22:22,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:22:22,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 17:22:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:22,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:22,681 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:22,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:22:22,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:22,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 17:22:22,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:22,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:22:22,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:22:22,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:22:22,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:22:22,698 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:22:22,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201677568] [2020-09-24 17:22:22,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:22:22,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 17:22:22,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830521529] [2020-09-24 17:22:22,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:22:22,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:22:22,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:22:22,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:22:22,705 INFO L87 Difference]: Start difference. First operand 90 states and 100 transitions. Second operand 8 states. [2020-09-24 17:22:23,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:22:23,062 INFO L93 Difference]: Finished difference Result 135 states and 152 transitions. [2020-09-24 17:22:23,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:22:23,063 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-09-24 17:22:23,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:22:23,067 INFO L225 Difference]: With dead ends: 135 [2020-09-24 17:22:23,067 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 17:22:23,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:22:23,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 17:22:23,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-09-24 17:22:23,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-24 17:22:23,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2020-09-24 17:22:23,090 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 49 [2020-09-24 17:22:23,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:22:23,091 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2020-09-24 17:22:23,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:22:23,091 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2020-09-24 17:22:23,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 17:22:23,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:22:23,095 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:22:23,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:22:23,096 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:22:23,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:22:23,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1879138141, now seen corresponding path program 2 times [2020-09-24 17:22:23,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:22:23,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851630848] [2020-09-24 17:22:23,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:22:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:23,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:23,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:23,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:23,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:23,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:23,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:23,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:24,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:24,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:24,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:25,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:25,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:25,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:25,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:25,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:25,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:25,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:25,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:25,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:26,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:26,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:26,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:26,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:26,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:27,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:27,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:27,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:29,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:29,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:29,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:29,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:29,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:29,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:30,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:30,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:30,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:30,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:31,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:31,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:31,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:31,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:31,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:31,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:31,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:31,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:32,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:33,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:34,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:34,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:34,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:34,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:36,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:38,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:38,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:39,831 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:39,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 17:22:39,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 54 [2020-09-24 17:22:39,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16722 [2020-09-24 17:22:39,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:39,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:22:39,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 17:22:39,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 17:22:39,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:22:39,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:22:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:39,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:39,909 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:39,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:22:39,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:39,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:22:39,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:39,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:22:39,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:22:39,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:22:39,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:22:39,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 17:22:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:39,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:39,922 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:39,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:22:39,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:39,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:22:39,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:22:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:22:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:22:39,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:22:39,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 17:22:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:22:39,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:22:39,941 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:22:39,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:22:39,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:22:39,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:22:39,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:22:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:22:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:22:39,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:22:39,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:22:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 17:22:39,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851630848] [2020-09-24 17:22:39,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:22:39,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 17:22:39,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055593768] [2020-09-24 17:22:39,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:22:39,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:22:39,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:22:39,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:22:39,954 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand 8 states. [2020-09-24 17:22:40,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:22:40,183 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2020-09-24 17:22:40,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 17:22:40,183 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-09-24 17:22:40,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:22:40,184 INFO L225 Difference]: With dead ends: 69 [2020-09-24 17:22:40,184 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 17:22:40,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:22:40,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 17:22:40,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 17:22:40,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 17:22:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 17:22:40,186 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2020-09-24 17:22:40,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:22:40,187 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 17:22:40,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:22:40,187 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 17:22:40,187 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 17:22:40,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:22:40,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 17:22:40,482 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 17:22:40,482 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~__BLAST_NONDET~0 |old(~__BLAST_NONDET~0)|) [2020-09-24 17:22:40,482 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 17:22:40,483 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 17:22:40,483 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 17:22:40,483 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 17:22:40,483 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 17:22:40,483 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 17:22:40,484 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 17:22:40,484 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 17:22:40,484 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 17:22:40,484 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 17:22:40,485 INFO L271 CegarLoopResult]: At program point L27(lines 14 29) the Hoare annotation is: true [2020-09-24 17:22:40,485 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 29) no Hoare annotation was computed. [2020-09-24 17:22:40,485 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 26) no Hoare annotation was computed. [2020-09-24 17:22:40,485 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-24 17:22:40,485 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 17:22:40,485 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-24 17:22:40,486 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-24 17:22:40,486 INFO L264 CegarLoopResult]: At program point L23-5(lines 23 26) the Hoare annotation is: (or (and (<= 1 main_~n~0) (<= 1 main_~i~0)) (and (<= main_~i~0 0) (<= 0 main_~i~0))) [2020-09-24 17:22:40,487 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 17:22:40,487 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 17:22:40,487 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 17:22:40,487 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-24 17:22:40,487 INFO L268 CegarLoopResult]: For program point L15-4(line 15) no Hoare annotation was computed. [2020-09-24 17:22:40,487 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 17:22:40,487 INFO L268 CegarLoopResult]: For program point L24-3(lines 24 26) no Hoare annotation was computed. [2020-09-24 17:22:40,488 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 17:22:40,488 INFO L268 CegarLoopResult]: For program point L24-4(line 24) no Hoare annotation was computed. [2020-09-24 17:22:40,488 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-24 17:22:40,488 INFO L268 CegarLoopResult]: For program point L24-5(line 24) no Hoare annotation was computed. [2020-09-24 17:22:40,488 INFO L264 CegarLoopResult]: At program point L24-6(lines 24 26) the Hoare annotation is: (and (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~n~0)) [2020-09-24 17:22:40,488 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 17:22:40,488 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 17:22:40,489 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 17:22:40,489 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 17:22:40,489 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-24 17:22:40,489 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 17:22:40,489 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-24 17:22:40,489 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 17:22:40,490 INFO L264 CegarLoopResult]: At program point L25-5(lines 25 26) the Hoare annotation is: (let ((.cse0 (<= (+ main_~i~0 1) main_~n~0))) (or (and (<= 1 main_~i~0) .cse0 (<= (+ main_~j~0 3) (+ main_~i~0 (* 2 main_~n~0)))) (let ((.cse1 (+ main_~j~0 1))) (and (<= .cse1 main_~k~0) (<= 0 main_~i~0) .cse0 (<= .cse1 main_~i~0))))) [2020-09-24 17:22:40,490 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 17:22:40,490 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 17:22:40,490 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-24 17:22:40,490 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 29) no Hoare annotation was computed. [2020-09-24 17:22:40,491 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 29) the Hoare annotation is: true [2020-09-24 17:22:40,492 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 (* 2 main_~n~0)))) (and (<= (+ main_~k~0 4) .cse0) (<= 1 main_~i~0) (<= (+ main_~i~0 1) main_~n~0) (<= (+ main_~j~0 3) .cse0))) [2020-09-24 17:22:40,492 INFO L268 CegarLoopResult]: For program point L26-1(lines 25 26) no Hoare annotation was computed. [2020-09-24 17:22:40,492 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 17:22:40,492 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-24 17:22:40,492 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 17:22:40,492 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 17:22:40,492 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 17:22:40,493 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 17:22:40,493 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 17:22:40,493 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 17:22:40,493 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 17:22:40,494 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 17:22:40,494 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 17:22:40,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:22:40 BoogieIcfgContainer [2020-09-24 17:22:40,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:22:40,542 INFO L168 Benchmark]: Toolchain (without parser) took 39132.92 ms. Allocated memory was 139.5 MB in the beginning and 419.4 MB in the end (delta: 280.0 MB). Free memory was 101.6 MB in the beginning and 215.8 MB in the end (delta: -114.2 MB). Peak memory consumption was 165.8 MB. Max. memory is 7.1 GB. [2020-09-24 17:22:40,544 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.3 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-24 17:22:40,546 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.70 ms. Allocated memory is still 139.5 MB. Free memory was 100.8 MB in the beginning and 91.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-24 17:22:40,552 INFO L168 Benchmark]: Boogie Preprocessor took 116.87 ms. Allocated memory was 139.5 MB in the beginning and 200.3 MB in the end (delta: 60.8 MB). Free memory was 91.3 MB in the beginning and 179.9 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:22:40,554 INFO L168 Benchmark]: RCFGBuilder took 390.14 ms. Allocated memory is still 200.3 MB. Free memory was 179.9 MB in the beginning and 161.6 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2020-09-24 17:22:40,555 INFO L168 Benchmark]: TraceAbstraction took 38318.28 ms. Allocated memory was 200.3 MB in the beginning and 419.4 MB in the end (delta: 219.2 MB). Free memory was 161.6 MB in the beginning and 215.8 MB in the end (delta: -54.2 MB). Peak memory consumption was 164.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:22:40,569 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.3 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 297.70 ms. Allocated memory is still 139.5 MB. Free memory was 100.8 MB in the beginning and 91.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.87 ms. Allocated memory was 139.5 MB in the beginning and 200.3 MB in the end (delta: 60.8 MB). Free memory was 91.3 MB in the beginning and 179.9 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 390.14 ms. Allocated memory is still 200.3 MB. Free memory was 179.9 MB in the beginning and 161.6 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 38318.28 ms. Allocated memory was 200.3 MB in the beginning and 419.4 MB in the end (delta: 219.2 MB). Free memory was 161.6 MB in the beginning and 215.8 MB in the end (delta: -54.2 MB). Peak memory consumption was 164.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 0 <= i && i + 1 <= n - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (1 <= n && 1 <= i) || (i <= 0 && 0 <= i) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((1 <= i && i + 1 <= n) && j + 3 <= i + 2 * n) || (((j + 1 <= k && 0 <= i) && i + 1 <= n) && j + 1 <= i) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 37.8s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 206 SDtfs, 537 SDslu, 193 SDs, 0 SdLazy, 1436 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=3, 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, 5 MinimizatonAttempts, 81 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 19 PreInvPairs, 32 NumberOfFragments, 97 HoareAnnotationTreeSize, 19 FomulaSimplifications, 1106 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 149 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 34.9s InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 225 ConstructedInterpolants, 0 QuantifiedInterpolants, 26127 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 28/38 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...