/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --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/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:10:56,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:10:56,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:10:56,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:10:56,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:10:56,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:10:56,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:10:56,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:10:56,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:10:56,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:10:56,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:10:56,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:10:56,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:10:56,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:10:56,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:10:56,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:10:56,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:10:56,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:10:56,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:10:56,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:10:56,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:10:56,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:10:56,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:10:56,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:10:56,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:10:56,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:10:56,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:10:56,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:10:56,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:10:56,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:10:56,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:10:56,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:10:56,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:10:56,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:10:56,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:10:56,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:10:56,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:10:56,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:10:56,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:10:56,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:10:56,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:10:56,188 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 [2020-09-25 01:10:56,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:10:56,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:10:56,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:10:56,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:10:56,239 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:10:56,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:10:56,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:10:56,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:10:56,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:10:56,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:10:56,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:10:56,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:10:56,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:10:56,243 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:10:56,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:10:56,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:10:56,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:10:56,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:10:56,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:10:56,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:10:56,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:10:56,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:10:56,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:10:56,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:10:56,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:10:56,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:10:56,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:10:56,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:10:56,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:10:56,246 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;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;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;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;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;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;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;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;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;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 01:10:56,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:10:56,731 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:10:56,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:10:56,739 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:10:56,740 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:10:56,742 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-25 01:10:56,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d617129dd/0b76a5ce1c93431892a31f360dab7a89/FLAG8aae0e9b4 [2020-09-25 01:10:57,413 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:10:57,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-25 01:10:57,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d617129dd/0b76a5ce1c93431892a31f360dab7a89/FLAG8aae0e9b4 [2020-09-25 01:10:57,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d617129dd/0b76a5ce1c93431892a31f360dab7a89 [2020-09-25 01:10:57,781 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:10:57,787 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:10:57,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:10:57,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:10:57,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:10:57,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:10:57" (1/1) ... [2020-09-25 01:10:57,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee2931e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:57, skipping insertion in model container [2020-09-25 01:10:57,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:10:57" (1/1) ... [2020-09-25 01:10:57,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:10:57,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:10:58,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:10:58,079 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:10:58,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:10:58,118 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:10:58,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:58 WrapperNode [2020-09-25 01:10:58,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:10:58,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:10:58,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:10:58,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:10:58,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:58" (1/1) ... [2020-09-25 01:10:58,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:58" (1/1) ... [2020-09-25 01:10:58,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:58" (1/1) ... [2020-09-25 01:10:58,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:58" (1/1) ... [2020-09-25 01:10:58,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:58" (1/1) ... [2020-09-25 01:10:58,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:58" (1/1) ... [2020-09-25 01:10:58,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:58" (1/1) ... [2020-09-25 01:10:58,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:10:58,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:10:58,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:10:58,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:10:58,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:58" (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 [2020-09-25 01:10:58,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:10:58,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:10:58,316 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 01:10:58,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 01:10:58,317 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:10:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:10:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 01:10:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 01:10:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 01:10:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:10:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:10:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:10:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:10:58,583 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:10:58,583 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 01:10:58,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:10:58 BoogieIcfgContainer [2020-09-25 01:10:58,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:10:58,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:10:58,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:10:58,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:10:58,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:10:57" (1/3) ... [2020-09-25 01:10:58,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3afba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:10:58, skipping insertion in model container [2020-09-25 01:10:58,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:58" (2/3) ... [2020-09-25 01:10:58,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3afba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:10:58, skipping insertion in model container [2020-09-25 01:10:58,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:10:58" (3/3) ... [2020-09-25 01:10:58,601 INFO L109 eAbstractionObserver]: Analyzing ICFG nested6.i [2020-09-25 01:10:58,616 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:10:58,629 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:10:58,658 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:10:58,692 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:10:58,692 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:10:58,692 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:10:58,693 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:10:58,693 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:10:58,693 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:10:58,693 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:10:58,693 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:10:58,722 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-09-25 01:10:58,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 01:10:58,731 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:58,732 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] [2020-09-25 01:10:58,733 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:58,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:58,740 INFO L82 PathProgramCache]: Analyzing trace with hash 2127483765, now seen corresponding path program 1 times [2020-09-25 01:10:58,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:58,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754044778] [2020-09-25 01:10:58,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:58,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:59,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:59,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 01:10:59,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:59,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 01:10:59,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:59,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:10:59,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 01:10:59,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 01:10:59,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 01:10:59,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:59,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:59,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:59,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:10:59,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:59,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:10:59,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:59,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:10:59,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754044778] [2020-09-25 01:10:59,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:59,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:10:59,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464439163] [2020-09-25 01:10:59,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:10:59,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:59,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:10:59,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:10:59,328 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 5 states. [2020-09-25 01:10:59,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:59,470 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2020-09-25 01:10:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:10:59,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-25 01:10:59,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:59,487 INFO L225 Difference]: With dead ends: 89 [2020-09-25 01:10:59,487 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 01:10:59,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:10:59,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 01:10:59,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 01:10:59,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 01:10:59,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-09-25 01:10:59,553 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 27 [2020-09-25 01:10:59,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:59,553 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-09-25 01:10:59,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:10:59,554 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-09-25 01:10:59,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 01:10:59,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:59,556 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] [2020-09-25 01:10:59,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:10:59,557 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:59,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:59,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1763359327, now seen corresponding path program 1 times [2020-09-25 01:10:59,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:59,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106603103] [2020-09-25 01:10:59,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:59,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:59,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:59,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 01:10:59,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:59,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 01:10:59,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:59,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:10:59,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 01:10:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 01:10:59,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:59,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:59,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:59,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:59,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:10:59,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:59,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:10:59,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:59,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:59,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:59,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:59,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:59,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:10:59,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106603103] [2020-09-25 01:10:59,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:59,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:10:59,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934709304] [2020-09-25 01:10:59,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:10:59,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:59,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:10:59,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:10:59,842 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-09-25 01:11:00,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:11:00,032 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2020-09-25 01:11:00,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:11:00,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-25 01:11:00,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:11:00,039 INFO L225 Difference]: With dead ends: 90 [2020-09-25 01:11:00,039 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 01:11:00,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:11:00,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 01:11:00,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 59. [2020-09-25 01:11:00,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 01:11:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-09-25 01:11:00,075 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 29 [2020-09-25 01:11:00,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:11:00,087 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-09-25 01:11:00,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:11:00,087 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-09-25 01:11:00,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 01:11:00,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:11:00,089 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:11:00,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:11:00,090 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:11:00,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:11:00,091 INFO L82 PathProgramCache]: Analyzing trace with hash 2139784298, now seen corresponding path program 1 times [2020-09-25 01:11:00,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:11:00,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734896895] [2020-09-25 01:11:00,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:11:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:00,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:00,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:00,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 01:11:00,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:00,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 01:11:00,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:00,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:11:00,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 01:11:00,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 01:11:00,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:00,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:11:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:00,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:00,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:00,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:11:00,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:00,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:11:00,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:00,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:11:00,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:00,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:11:00,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:00,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 01:11:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:00,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:00,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:00,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:11:00,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:00,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 01:11:00,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:11:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:00,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:11:00,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:11:00,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:11:00,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734896895] [2020-09-25 01:11:00,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:11:00,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:11:00,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008907413] [2020-09-25 01:11:00,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:11:00,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:11:00,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:11:00,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:11:00,285 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 5 states. [2020-09-25 01:11:00,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:11:00,390 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-09-25 01:11:00,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:11:00,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-09-25 01:11:00,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:11:00,396 INFO L225 Difference]: With dead ends: 90 [2020-09-25 01:11:00,397 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 01:11:00,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:11:00,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 01:11:00,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-25 01:11:00,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 01:11:00,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2020-09-25 01:11:00,417 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 32 [2020-09-25 01:11:00,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:11:00,417 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2020-09-25 01:11:00,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:11:00,417 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2020-09-25 01:11:00,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 01:11:00,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:11:00,419 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 01:11:00,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:11:00,420 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:11:00,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:11:00,420 INFO L82 PathProgramCache]: Analyzing trace with hash -268568898, now seen corresponding path program 1 times [2020-09-25 01:11:00,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:11:00,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612271222] [2020-09-25 01:11:00,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:11:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:00,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:00,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:01,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:01,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 01:11:01,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:11:01,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-09-25 01:11:01,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:01,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 01:11:01,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 01:11:01,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 01:11:01,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:11:01,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:11:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:01,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:01,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:01,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:11:01,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:01,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:11:01,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:11:01,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:01,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:11:01,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 01:11:01,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 01:11:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:01,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:01,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:01,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:11:01,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:01,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 01:11:01,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:01,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:11:01,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:01,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:11:01,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 01:11:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:11:01,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612271222] [2020-09-25 01:11:01,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:11:01,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 01:11:01,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279050742] [2020-09-25 01:11:01,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:11:01,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:11:01,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:11:01,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:11:01,269 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 9 states. [2020-09-25 01:11:01,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:11:01,498 INFO L93 Difference]: Finished difference Result 107 states and 123 transitions. [2020-09-25 01:11:01,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 01:11:01,499 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-09-25 01:11:01,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:11:01,501 INFO L225 Difference]: With dead ends: 107 [2020-09-25 01:11:01,501 INFO L226 Difference]: Without dead ends: 105 [2020-09-25 01:11:01,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 01:11:01,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-25 01:11:01,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 84. [2020-09-25 01:11:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 01:11:01,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2020-09-25 01:11:01,524 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 38 [2020-09-25 01:11:01,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:11:01,525 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2020-09-25 01:11:01,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:11:01,525 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2020-09-25 01:11:01,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 01:11:01,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:11:01,527 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] [2020-09-25 01:11:01,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:11:01,527 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:11:01,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:11:01,528 INFO L82 PathProgramCache]: Analyzing trace with hash -360550748, now seen corresponding path program 1 times [2020-09-25 01:11:01,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:11:01,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092727264] [2020-09-25 01:11:01,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:11:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:01,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:01,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:01,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:01,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:02,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:02,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:02,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:02,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 01:11:02,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 01:11:02,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1165 [2020-09-25 01:11:02,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:02,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:11:02,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 01:11:02,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:11:02,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:11:02,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:11:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:02,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:02,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:02,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:11:02,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:02,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:11:02,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:11:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:11:02,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:11:02,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092727264] [2020-09-25 01:11:02,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:11:02,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:11:02,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932548900] [2020-09-25 01:11:02,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:11:02,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:11:02,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:11:02,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:11:02,770 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 6 states. [2020-09-25 01:11:02,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:11:02,910 INFO L93 Difference]: Finished difference Result 141 states and 162 transitions. [2020-09-25 01:11:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 01:11:02,910 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 01:11:02,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:11:02,912 INFO L225 Difference]: With dead ends: 141 [2020-09-25 01:11:02,912 INFO L226 Difference]: Without dead ends: 99 [2020-09-25 01:11:02,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:11:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-25 01:11:02,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2020-09-25 01:11:02,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-25 01:11:02,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2020-09-25 01:11:02,925 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 38 [2020-09-25 01:11:02,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:11:02,925 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2020-09-25 01:11:02,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:11:02,926 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2020-09-25 01:11:02,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 01:11:02,927 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:11:02,928 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 01:11:02,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:11:02,928 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:11:02,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:11:02,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1447898534, now seen corresponding path program 1 times [2020-09-25 01:11:02,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:11:02,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170139774] [2020-09-25 01:11:02,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:11:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:02,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:03,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:03,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 01:11:03,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:03,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 01:11:03,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:03,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 01:11:03,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 01:11:03,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 01:11:03,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 01:11:03,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:11:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:03,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:03,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:03,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:11:03,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:03,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:11:03,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:11:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:03,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:11:03,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:11:03,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 01:11:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:03,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:03,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:03,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:11:03,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:03,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 01:11:03,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:03,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:11:03,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:03,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:11:03,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:11:03,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 01:11:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:03,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:03,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:03,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:11:03,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:03,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 01:11:03,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:03,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:11:03,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:03,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:11:03,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 01:11:03,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170139774] [2020-09-25 01:11:03,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:11:03,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 01:11:03,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838849111] [2020-09-25 01:11:03,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:11:03,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:11:03,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:11:03,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:11:03,229 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand 8 states. [2020-09-25 01:11:03,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:11:03,494 INFO L93 Difference]: Finished difference Result 157 states and 186 transitions. [2020-09-25 01:11:03,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 01:11:03,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-09-25 01:11:03,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:11:03,500 INFO L225 Difference]: With dead ends: 157 [2020-09-25 01:11:03,500 INFO L226 Difference]: Without dead ends: 155 [2020-09-25 01:11:03,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 01:11:03,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-25 01:11:03,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 120. [2020-09-25 01:11:03,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-25 01:11:03,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 143 transitions. [2020-09-25 01:11:03,538 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 143 transitions. Word has length 46 [2020-09-25 01:11:03,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:11:03,538 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 143 transitions. [2020-09-25 01:11:03,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:11:03,538 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 143 transitions. [2020-09-25 01:11:03,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 01:11:03,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:11:03,544 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] [2020-09-25 01:11:03,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 01:11:03,544 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:11:03,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:11:03,548 INFO L82 PathProgramCache]: Analyzing trace with hash 517351166, now seen corresponding path program 1 times [2020-09-25 01:11:03,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:11:03,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220803069] [2020-09-25 01:11:03,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:11:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:03,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:03,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:03,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:03,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:03,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:04,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:04,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:04,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:04,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:04,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:06,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:06,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:06,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:06,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:08,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:08,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 01:11:08,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 01:11:08,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 01:11:08,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:08,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:11:08,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 01:11:08,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:11:08,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:08,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:11:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:08,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:08,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:08,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:11:08,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:08,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:11:08,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:08,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:11:08,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:08,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:11:08,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:08,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 01:11:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:08,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:08,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:08,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:08,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:11:08,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:11:08,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 01:11:08,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:08,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:11:08,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 01:11:08,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:11:08,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:08,672 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 01:11:08,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220803069] [2020-09-25 01:11:08,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:11:08,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 01:11:08,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001895298] [2020-09-25 01:11:08,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:11:08,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:11:08,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:11:08,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:11:08,675 INFO L87 Difference]: Start difference. First operand 120 states and 143 transitions. Second operand 8 states. [2020-09-25 01:11:08,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:11:08,806 INFO L93 Difference]: Finished difference Result 185 states and 223 transitions. [2020-09-25 01:11:08,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:11:08,807 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-09-25 01:11:08,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:11:08,809 INFO L225 Difference]: With dead ends: 185 [2020-09-25 01:11:08,809 INFO L226 Difference]: Without dead ends: 116 [2020-09-25 01:11:08,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:11:08,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-25 01:11:08,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-09-25 01:11:08,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-25 01:11:08,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-09-25 01:11:08,822 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 47 [2020-09-25 01:11:08,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:11:08,823 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-09-25 01:11:08,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:11:08,823 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-09-25 01:11:08,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 01:11:08,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:11:08,825 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 01:11:08,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 01:11:08,825 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:11:08,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:11:08,826 INFO L82 PathProgramCache]: Analyzing trace with hash 87970788, now seen corresponding path program 1 times [2020-09-25 01:11:08,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:11:08,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204505498] [2020-09-25 01:11:08,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:11:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:08,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:08,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:08,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:09,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:09,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:09,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:11,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:11,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 01:11:11,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 01:11:11,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2663 [2020-09-25 01:11:11,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:11:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 01:11:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:11:11,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:11,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:11:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:11,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:11,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:11,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:11:11,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:11,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:11:11,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:11,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:11:11,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:11,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:11:11,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:11,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 01:11:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:11,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:11,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:11,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:11:11,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:11,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 01:11:11,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:11,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:11:11,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:11,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:11:11,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:11,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 01:11:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:11,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:11,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:11,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:11:11,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:11,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:11:11,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:11,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:11:11,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:11,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:11:11,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:11,589 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 01:11:11,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204505498] [2020-09-25 01:11:11,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:11:11,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 01:11:11,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164895353] [2020-09-25 01:11:11,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 01:11:11,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:11:11,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 01:11:11,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:11:11,593 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 7 states. [2020-09-25 01:11:11,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:11:11,718 INFO L93 Difference]: Finished difference Result 122 states and 141 transitions. [2020-09-25 01:11:11,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 01:11:11,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-09-25 01:11:11,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:11:11,721 INFO L225 Difference]: With dead ends: 122 [2020-09-25 01:11:11,721 INFO L226 Difference]: Without dead ends: 120 [2020-09-25 01:11:11,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:11:11,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-25 01:11:11,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 86. [2020-09-25 01:11:11,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 01:11:11,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2020-09-25 01:11:11,735 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 50 [2020-09-25 01:11:11,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:11:11,735 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2020-09-25 01:11:11,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 01:11:11,736 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2020-09-25 01:11:11,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 01:11:11,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:11:11,737 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 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] [2020-09-25 01:11:11,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 01:11:11,737 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:11:11,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:11:11,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1080348991, now seen corresponding path program 2 times [2020-09-25 01:11:11,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:11:11,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58429942] [2020-09-25 01:11:11,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:11:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:11,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:11,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:11,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 01:11:11,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:11,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-25 01:11:11,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 01:11:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 01:11:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 01:11:11,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:12,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:11:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:12,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:12,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:12,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:11:12,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:12,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:11:12,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:12,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:11:12,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:12,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:11:12,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:12,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 01:11:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:12,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:12,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:12,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:11:12,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:12,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:11:12,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:11:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:11:12,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:12,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 01:11:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:12,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:12,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:12,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:11:12,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:12,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:11:12,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:12,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:11:12,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:12,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:11:12,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:12,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 01:11:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:12,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:12,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:12,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:11:12,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:12,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:11:12,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:11:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:11:12,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:12,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 01:11:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:12,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:12,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:11:12,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 01:11:12,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:12,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:11:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:11:12,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:12,134 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 01:11:12,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58429942] [2020-09-25 01:11:12,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:11:12,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 01:11:12,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181656497] [2020-09-25 01:11:12,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 01:11:12,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:11:12,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 01:11:12,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:11:12,143 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand 10 states. [2020-09-25 01:11:12,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:11:12,497 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2020-09-25 01:11:12,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 01:11:12,498 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-09-25 01:11:12,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:11:12,499 INFO L225 Difference]: With dead ends: 102 [2020-09-25 01:11:12,499 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 01:11:12,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-09-25 01:11:12,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 01:11:12,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 01:11:12,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 01:11:12,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 01:11:12,505 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2020-09-25 01:11:12,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:11:12,505 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 01:11:12,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 01:11:12,506 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 01:11:12,506 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 01:11:12,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 01:11:12,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 01:11:13,108 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 22 [2020-09-25 01:11:13,196 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 01:11:13,196 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 01:11:13,196 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 01:11:13,196 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 01:11:13,196 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 01:11:13,197 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 01:11:13,197 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 01:11:13,197 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 01:11:13,197 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 01:11:13,197 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 01:11:13,197 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 01:11:13,197 INFO L268 CegarLoopResult]: For program point L31(lines 23 33) no Hoare annotation was computed. [2020-09-25 01:11:13,198 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 37) no Hoare annotation was computed. [2020-09-25 01:11:13,198 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 01:11:13,198 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-25 01:11:13,198 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-25 01:11:13,198 INFO L264 CegarLoopResult]: At program point L23-5(lines 23 33) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1))) [2020-09-25 01:11:13,199 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 01:11:13,199 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 01:11:13,200 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 01:11:13,200 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 01:11:13,200 INFO L268 CegarLoopResult]: For program point L24-1(lines 24 32) no Hoare annotation was computed. [2020-09-25 01:11:13,200 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 01:11:13,201 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-09-25 01:11:13,201 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 01:11:13,201 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 01:11:13,201 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 01:11:13,201 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 01:11:13,201 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-25 01:11:13,201 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-25 01:11:13,203 INFO L264 CegarLoopResult]: At program point L25-5(lines 25 27) the Hoare annotation is: (let ((.cse4 (* 2 main_~i~0))) (let ((.cse3 (+ .cse4 1))) (let ((.cse0 (or (<= .cse3 main_~k~0) (and (<= .cse4 main_~j~0) (<= .cse4 main_~k~0)))) (.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 .cse2 (= (* main_~i~0 2) main_~j~0)) (and .cse0 (<= .cse3 main_~j~0) .cse1 .cse2))))) [2020-09-25 01:11:13,203 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 01:11:13,203 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 01:11:13,203 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 37) no Hoare annotation was computed. [2020-09-25 01:11:13,204 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse1 (<= main_~n~0 main_~k~0)) (.cse0 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1 .cse2) (and .cse1 .cse0 .cse2 (= (* main_~i~0 2) main_~j~0)))) [2020-09-25 01:11:13,204 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 37) the Hoare annotation is: true [2020-09-25 01:11:13,204 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (let ((.cse1 (<= main_~n~0 main_~k~0)) (.cse0 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1 .cse2) (and .cse1 .cse0 .cse2 (= (* main_~i~0 2) main_~j~0)))) [2020-09-25 01:11:13,205 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse3 (* 2 main_~i~0))) (let ((.cse2 (+ .cse3 1))) (let ((.cse0 (or (<= .cse2 main_~k~0) (and (<= .cse3 main_~j~0) (<= .cse3 main_~k~0)))) (.cse1 (<= (+ main_~k~0 1) main_~n~0))) (or (and .cse0 .cse1 (= (* main_~i~0 2) main_~j~0)) (and .cse0 .cse1 (<= .cse2 main_~j~0) (<= (+ main_~j~0 1) main_~n~0)))))) [2020-09-25 01:11:13,205 INFO L268 CegarLoopResult]: For program point L26-1(lines 25 27) no Hoare annotation was computed. [2020-09-25 01:11:13,205 INFO L268 CegarLoopResult]: For program point L22-2(lines 22 34) no Hoare annotation was computed. [2020-09-25 01:11:13,205 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-25 01:11:13,205 INFO L268 CegarLoopResult]: For program point L18(lines 18 21) no Hoare annotation was computed. [2020-09-25 01:11:13,205 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 01:11:13,205 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 21) no Hoare annotation was computed. [2020-09-25 01:11:13,206 INFO L264 CegarLoopResult]: At program point L22-5(lines 22 34) the Hoare annotation is: (= main_~n~0 main_~k~0) [2020-09-25 01:11:13,206 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 01:11:13,206 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 01:11:13,206 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 01:11:13,206 INFO L271 CegarLoopResult]: At program point L35(lines 13 37) the Hoare annotation is: true [2020-09-25 01:11:13,207 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 01:11:13,207 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 01:11:13,207 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 01:11:13,207 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 01:11:13,207 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 01:11:13,207 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 01:11:13,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:11:13 BoogieIcfgContainer [2020-09-25 01:11:13,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:11:13,258 INFO L168 Benchmark]: Toolchain (without parser) took 15471.65 ms. Allocated memory was 140.0 MB in the beginning and 317.2 MB in the end (delta: 177.2 MB). Free memory was 103.6 MB in the beginning and 222.5 MB in the end (delta: -118.8 MB). Peak memory consumption was 58.4 MB. Max. memory is 7.1 GB. [2020-09-25 01:11:13,259 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 01:11:13,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.00 ms. Allocated memory is still 140.0 MB. Free memory was 103.0 MB in the beginning and 93.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 01:11:13,261 INFO L168 Benchmark]: Boogie Preprocessor took 115.35 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 93.5 MB in the beginning and 183.4 MB in the end (delta: -89.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-25 01:11:13,266 INFO L168 Benchmark]: RCFGBuilder took 355.14 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 166.2 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-09-25 01:11:13,267 INFO L168 Benchmark]: TraceAbstraction took 14658.56 ms. Allocated memory was 203.4 MB in the beginning and 317.2 MB in the end (delta: 113.8 MB). Free memory was 166.2 MB in the beginning and 222.5 MB in the end (delta: -56.2 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. [2020-09-25 01:11:13,274 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 332.00 ms. Allocated memory is still 140.0 MB. Free memory was 103.0 MB in the beginning and 93.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.35 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 93.5 MB in the beginning and 183.4 MB in the end (delta: -89.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 355.14 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 166.2 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14658.56 ms. Allocated memory was 203.4 MB in the beginning and 317.2 MB in the end (delta: 113.8 MB). Free memory was 166.2 MB in the beginning and 222.5 MB in the end (delta: -56.2 MB). Peak memory consumption was 57.5 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: 22]: Loop Invariant Derived loop invariant: n == k - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((n <= k && k <= n) && i * 2 == j) || ((2 * i + 1 <= j && n <= k) && k <= n) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((2 * i + 1 <= k || (2 * i <= j && 2 * i <= k)) && j + 1 <= n) && k <= n) && i * 2 == j) || ((((2 * i + 1 <= k || (2 * i <= j && 2 * i <= k)) && 2 * i + 1 <= j) && j + 1 <= n) && k <= n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.8s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 488 SDtfs, 230 SDslu, 1902 SDs, 0 SdLazy, 963 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=6, 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, 9 MinimizatonAttempts, 133 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 37 PreInvPairs, 60 NumberOfFragments, 247 HoareAnnotationTreeSize, 37 FomulaSimplifications, 1320 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 12 FomulaSimplificationsInter, 355 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 370 NumberOfCodeBlocks, 370 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 361 ConstructedInterpolants, 0 QuantifiedInterpolants, 39341 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 73/91 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...