/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=SHALLOWEST --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 00:05:19,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:05:19,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:05:19,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:05:19,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:05:19,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:05:19,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:05:19,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:05:19,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:05:19,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:05:19,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:05:19,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:05:19,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:05:19,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:05:19,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:05:19,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:05:19,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:05:19,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:05:19,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:05:19,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:05:19,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:05:19,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:05:19,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:05:19,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:05:19,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:05:19,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:05:19,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:05:19,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:05:19,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:05:19,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:05:19,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:05:19,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:05:19,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:05:19,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:05:19,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:05:19,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:05:19,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:05:19,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:05:19,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:05:19,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:05:19,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:05:19,230 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 00:05:19,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:05:19,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:05:19,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:05:19,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:05:19,291 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:05:19,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:05:19,292 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:05:19,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:05:19,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:05:19,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:05:19,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:05:19,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:05:19,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:05:19,294 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:05:19,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:05:19,294 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:05:19,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:05:19,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:05:19,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:05:19,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:05:19,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:05:19,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:05:19,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:05:19,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:05:19,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:05:19,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:05:19,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:05:19,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:05:19,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:05:19,298 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-25 00:05:19,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:05:19,835 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:05:19,840 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:05:19,842 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:05:19,842 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:05:19,843 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-25 00:05:19,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e4f499de/94ae62f3fab64781bf47aa34d2604e0d/FLAG07f54823c [2020-09-25 00:05:20,488 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:05:20,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-25 00:05:20,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e4f499de/94ae62f3fab64781bf47aa34d2604e0d/FLAG07f54823c [2020-09-25 00:05:20,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e4f499de/94ae62f3fab64781bf47aa34d2604e0d [2020-09-25 00:05:20,830 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:05:20,836 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:05:20,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:05:20,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:05:20,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:05:20,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:05:20" (1/1) ... [2020-09-25 00:05:20,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ec2d0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:20, skipping insertion in model container [2020-09-25 00:05:20,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:05:20" (1/1) ... [2020-09-25 00:05:20,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:05:20,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:05:21,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:05:21,123 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:05:21,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:05:21,165 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:05:21,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:21 WrapperNode [2020-09-25 00:05:21,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:05:21,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:05:21,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:05:21,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:05:21,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:21" (1/1) ... [2020-09-25 00:05:21,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:21" (1/1) ... [2020-09-25 00:05:21,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:21" (1/1) ... [2020-09-25 00:05:21,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:21" (1/1) ... [2020-09-25 00:05:21,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:21" (1/1) ... [2020-09-25 00:05:21,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:21" (1/1) ... [2020-09-25 00:05:21,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:21" (1/1) ... [2020-09-25 00:05:21,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:05:21,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:05:21,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:05:21,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:05:21,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:21" (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 00:05:21,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:05:21,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:05:21,376 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:05:21,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:05:21,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:05:21,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:05:21,378 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:05:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:05:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:05:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:05:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:05:21,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:05:21,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:05:21,684 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:05:21,684 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 00:05:21,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:05:21 BoogieIcfgContainer [2020-09-25 00:05:21,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:05:21,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:05:21,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:05:21,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:05:21,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:05:20" (1/3) ... [2020-09-25 00:05:21,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f98965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:05:21, skipping insertion in model container [2020-09-25 00:05:21,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:21" (2/3) ... [2020-09-25 00:05:21,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f98965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:05:21, skipping insertion in model container [2020-09-25 00:05:21,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:05:21" (3/3) ... [2020-09-25 00:05:21,706 INFO L109 eAbstractionObserver]: Analyzing ICFG nested6.i [2020-09-25 00:05:21,715 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:05:21,724 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:05:21,745 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:05:21,778 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:05:21,779 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:05:21,779 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:05:21,779 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:05:21,779 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:05:21,779 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:05:21,780 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:05:21,780 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:05:21,805 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-09-25 00:05:21,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 00:05:21,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:21,814 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 00:05:21,815 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:21,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:21,822 INFO L82 PathProgramCache]: Analyzing trace with hash 2127483765, now seen corresponding path program 1 times [2020-09-25 00:05:21,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:21,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572605230] [2020-09-25 00:05:21,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:22,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:22,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:22,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 00:05:22,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:22,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 00:05:22,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:22,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:05:22,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 00:05:22,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 00:05:22,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:05:22,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:22,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:22,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:22,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:05:22,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:22,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:05:22,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:22,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:22,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:22,362 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 00:05:22,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572605230] [2020-09-25 00:05:22,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:05:22,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:05:22,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760315504] [2020-09-25 00:05:22,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:05:22,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:22,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:05:22,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:05:22,391 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 5 states. [2020-09-25 00:05:22,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:22,553 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2020-09-25 00:05:22,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:05:22,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-25 00:05:22,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:22,568 INFO L225 Difference]: With dead ends: 89 [2020-09-25 00:05:22,568 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 00:05:22,573 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 00:05:22,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 00:05:22,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 00:05:22,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 00:05:22,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-09-25 00:05:22,627 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 27 [2020-09-25 00:05:22,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:22,628 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-09-25 00:05:22,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:05:22,628 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-09-25 00:05:22,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 00:05:22,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:22,630 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 00:05:22,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:05:22,631 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:22,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:22,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1763359327, now seen corresponding path program 1 times [2020-09-25 00:05:22,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:22,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226796517] [2020-09-25 00:05:22,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:22,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:22,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:22,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 00:05:22,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:22,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 00:05:22,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:05:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 00:05:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 00:05:22,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:22,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:22,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:22,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:22,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:05:22,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:22,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:05:22,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:22,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:22,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:05:22,876 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 00:05:22,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226796517] [2020-09-25 00:05:22,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:05:22,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 00:05:22,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60740736] [2020-09-25 00:05:22,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 00:05:22,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:22,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 00:05:22,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:05:22,888 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-09-25 00:05:23,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:23,099 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2020-09-25 00:05:23,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 00:05:23,100 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-25 00:05:23,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:23,102 INFO L225 Difference]: With dead ends: 90 [2020-09-25 00:05:23,103 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 00:05:23,104 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 00:05:23,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 00:05:23,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 59. [2020-09-25 00:05:23,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 00:05:23,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-09-25 00:05:23,122 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 29 [2020-09-25 00:05:23,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:23,123 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-09-25 00:05:23,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 00:05:23,123 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-09-25 00:05:23,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 00:05:23,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:23,125 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 00:05:23,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:05:23,126 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:23,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:23,126 INFO L82 PathProgramCache]: Analyzing trace with hash 2139784298, now seen corresponding path program 1 times [2020-09-25 00:05:23,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:23,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281958655] [2020-09-25 00:05:23,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:23,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:23,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:23,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 00:05:23,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:23,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 00:05:23,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:23,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:05:23,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 00:05:23,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 00:05:23,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:23,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:23,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:23,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:23,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:05:23,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:23,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:05:23,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:23,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:23,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:23,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:23,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:23,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 00:05:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:23,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:23,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:23,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:23,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:23,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 00:05:23,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:23,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:05:23,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:05:23,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:23,349 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 00:05:23,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281958655] [2020-09-25 00:05:23,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:05:23,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:05:23,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524549285] [2020-09-25 00:05:23,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:05:23,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:23,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:05:23,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:05:23,352 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 5 states. [2020-09-25 00:05:23,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:23,431 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-09-25 00:05:23,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:05:23,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-09-25 00:05:23,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:23,436 INFO L225 Difference]: With dead ends: 90 [2020-09-25 00:05:23,436 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 00:05:23,437 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 00:05:23,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 00:05:23,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-25 00:05:23,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 00:05:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2020-09-25 00:05:23,452 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 32 [2020-09-25 00:05:23,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:23,452 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2020-09-25 00:05:23,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:05:23,452 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2020-09-25 00:05:23,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 00:05:23,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:23,454 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 00:05:23,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:05:23,455 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:23,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:23,455 INFO L82 PathProgramCache]: Analyzing trace with hash -268568898, now seen corresponding path program 1 times [2020-09-25 00:05:23,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:23,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912819173] [2020-09-25 00:05:23,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:23,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:23,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:23,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:23,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 00:05:23,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:05:23,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-09-25 00:05:23,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:23,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:05:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 00:05:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 00:05:23,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:24,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:24,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:24,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:24,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:05:24,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:05:24,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:24,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:24,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:24,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:24,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:24,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 00:05:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:24,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:24,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:24,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:24,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:24,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 00:05:24,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:05:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:05:24,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:05:24,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912819173] [2020-09-25 00:05:24,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:05:24,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:05:24,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407517372] [2020-09-25 00:05:24,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:05:24,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:24,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:05:24,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:05:24,073 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 8 states. [2020-09-25 00:05:24,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:24,429 INFO L93 Difference]: Finished difference Result 146 states and 172 transitions. [2020-09-25 00:05:24,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 00:05:24,430 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-09-25 00:05:24,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:24,434 INFO L225 Difference]: With dead ends: 146 [2020-09-25 00:05:24,437 INFO L226 Difference]: Without dead ends: 144 [2020-09-25 00:05:24,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:05:24,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-25 00:05:24,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 93. [2020-09-25 00:05:24,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 00:05:24,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2020-09-25 00:05:24,478 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 38 [2020-09-25 00:05:24,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:24,479 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2020-09-25 00:05:24,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:05:24,481 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2020-09-25 00:05:24,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 00:05:24,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:24,483 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 00:05:24,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:05:24,483 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:24,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:24,484 INFO L82 PathProgramCache]: Analyzing trace with hash -360550748, now seen corresponding path program 1 times [2020-09-25 00:05:24,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:24,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89757191] [2020-09-25 00:05:24,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:24,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:24,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:24,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:24,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:24,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:25,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:25,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:25,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:05:25,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:05:25,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1347 [2020-09-25 00:05:25,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:05:25,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 00:05:25,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:05:25,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:25,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:25,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:25,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:25,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:05:25,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:25,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:05:25,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:25,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:25,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:25,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:25,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:25,925 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 00:05:25,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89757191] [2020-09-25 00:05:25,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:05:25,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 00:05:25,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105662227] [2020-09-25 00:05:25,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 00:05:25,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:25,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 00:05:25,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:05:25,930 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand 6 states. [2020-09-25 00:05:26,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:26,117 INFO L93 Difference]: Finished difference Result 214 states and 256 transitions. [2020-09-25 00:05:26,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:05:26,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 00:05:26,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:26,120 INFO L225 Difference]: With dead ends: 214 [2020-09-25 00:05:26,120 INFO L226 Difference]: Without dead ends: 138 [2020-09-25 00:05:26,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:05:26,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-25 00:05:26,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 97. [2020-09-25 00:05:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-25 00:05:26,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2020-09-25 00:05:26,168 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 38 [2020-09-25 00:05:26,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:26,170 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2020-09-25 00:05:26,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 00:05:26,170 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2020-09-25 00:05:26,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 00:05:26,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:26,172 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 00:05:26,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:05:26,173 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:26,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:26,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1447898534, now seen corresponding path program 1 times [2020-09-25 00:05:26,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:26,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152477280] [2020-09-25 00:05:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:26,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:26,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:26,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 00:05:26,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:26,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 00:05:26,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:26,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:05:26,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 00:05:26,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 00:05:26,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:05:26,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:26,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:26,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:26,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:05:26,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:26,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:05:26,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:26,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:26,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 00:05:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:26,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:26,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:26,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:26,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:26,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:05:26,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:05:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:05:26,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:26,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:05:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:26,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:26,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:26,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:26,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:26,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:05:26,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:05:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:05:26,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:26,460 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 00:05:26,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152477280] [2020-09-25 00:05:26,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:05:26,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:05:26,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222229681] [2020-09-25 00:05:26,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:05:26,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:26,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:05:26,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:05:26,464 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand 8 states. [2020-09-25 00:05:26,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:26,709 INFO L93 Difference]: Finished difference Result 155 states and 182 transitions. [2020-09-25 00:05:26,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 00:05:26,710 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-09-25 00:05:26,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:26,712 INFO L225 Difference]: With dead ends: 155 [2020-09-25 00:05:26,712 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 00:05:26,713 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 00:05:26,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 00:05:26,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 128. [2020-09-25 00:05:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-25 00:05:26,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2020-09-25 00:05:26,728 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 46 [2020-09-25 00:05:26,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:26,729 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2020-09-25 00:05:26,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:05:26,729 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2020-09-25 00:05:26,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 00:05:26,731 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:26,731 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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 00:05:26,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:05:26,731 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:26,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:26,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1446982975, now seen corresponding path program 2 times [2020-09-25 00:05:26,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:26,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295795941] [2020-09-25 00:05:26,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:26,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:26,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:26,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:29,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:29,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 00:05:29,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:05:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2259 [2020-09-25 00:05:29,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:29,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:05:29,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 00:05:29,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 00:05:29,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:29,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:29,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:29,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:29,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:05:29,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:29,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:05:29,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:29,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:29,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:29,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:29,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:29,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 00:05:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:29,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:29,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:29,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:29,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:29,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:05:29,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:05:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:05:29,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:29,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 00:05:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:29,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:29,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:29,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:29,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:29,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:05:29,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:05:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:05:29,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 00:05:29,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295795941] [2020-09-25 00:05:29,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:05:29,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 00:05:29,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282662792] [2020-09-25 00:05:29,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 00:05:29,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:29,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 00:05:29,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:05:29,177 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand 10 states. [2020-09-25 00:05:29,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:29,632 INFO L93 Difference]: Finished difference Result 182 states and 214 transitions. [2020-09-25 00:05:29,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 00:05:29,633 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-09-25 00:05:29,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:29,638 INFO L225 Difference]: With dead ends: 182 [2020-09-25 00:05:29,638 INFO L226 Difference]: Without dead ends: 180 [2020-09-25 00:05:29,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-09-25 00:05:29,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-09-25 00:05:29,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 118. [2020-09-25 00:05:29,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-25 00:05:29,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-09-25 00:05:29,662 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 47 [2020-09-25 00:05:29,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:29,663 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-09-25 00:05:29,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 00:05:29,663 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-09-25 00:05:29,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 00:05:29,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:29,670 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 00:05:29,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:05:29,670 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:29,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:29,671 INFO L82 PathProgramCache]: Analyzing trace with hash 87970788, now seen corresponding path program 1 times [2020-09-25 00:05:29,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:29,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916713496] [2020-09-25 00:05:29,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:29,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:29,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:29,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:29,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:30,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:30,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:32,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:32,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 00:05:32,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:05:32,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2788 [2020-09-25 00:05:32,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:32,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:05:32,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 00:05:32,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 00:05:32,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:32,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:32,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:32,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:32,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:05:32,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:32,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:05:32,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:32,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:32,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 00:05:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:32,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:32,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:32,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:32,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:32,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:05:32,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:32,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:05:32,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:32,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:05:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:32,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 00:05:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:32,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:32,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:32,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:32,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:32,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:05:32,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:05:32,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:32,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:05:32,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 00:05:32,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916713496] [2020-09-25 00:05:32,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:05:32,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 00:05:32,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518922572] [2020-09-25 00:05:32,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 00:05:32,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:32,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 00:05:32,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:05:32,664 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 10 states. [2020-09-25 00:05:33,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:33,027 INFO L93 Difference]: Finished difference Result 183 states and 221 transitions. [2020-09-25 00:05:33,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 00:05:33,028 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-09-25 00:05:33,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:33,031 INFO L225 Difference]: With dead ends: 183 [2020-09-25 00:05:33,031 INFO L226 Difference]: Without dead ends: 181 [2020-09-25 00:05:33,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-25 00:05:33,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-09-25 00:05:33,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 88. [2020-09-25 00:05:33,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-25 00:05:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2020-09-25 00:05:33,048 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 50 [2020-09-25 00:05:33,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:33,049 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2020-09-25 00:05:33,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 00:05:33,049 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2020-09-25 00:05:33,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 00:05:33,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:33,050 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-09-25 00:05:33,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:05:33,050 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:33,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:33,051 INFO L82 PathProgramCache]: Analyzing trace with hash 2033926999, now seen corresponding path program 1 times [2020-09-25 00:05:33,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:33,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425262530] [2020-09-25 00:05:33,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:33,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:33,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:33,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:33,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 00:05:33,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:05:33,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-09-25 00:05:33,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:05:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 00:05:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 00:05:33,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:33,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:33,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:33,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:33,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:05:33,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:33,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:05:33,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:33,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:33,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 00:05:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:33,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:33,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:33,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:33,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:33,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:05:33,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:33,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:05:33,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:33,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:05:33,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:33,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:05:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:34,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:34,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:34,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:34,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:34,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:05:34,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:05:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:05:34,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:34,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 00:05:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:34,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:34,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:34,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:34,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:34,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:05:34,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:34,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:05:34,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:34,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:05:34,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:34,035 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 00:05:34,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425262530] [2020-09-25 00:05:34,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:05:34,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 00:05:34,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989676284] [2020-09-25 00:05:34,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 00:05:34,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:34,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 00:05:34,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:05:34,042 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 10 states. [2020-09-25 00:05:34,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:34,365 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2020-09-25 00:05:34,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 00:05:34,365 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-09-25 00:05:34,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:34,366 INFO L225 Difference]: With dead ends: 106 [2020-09-25 00:05:34,366 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 00:05:34,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-09-25 00:05:34,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 00:05:34,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 00:05:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 00:05:34,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 00:05:34,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-09-25 00:05:34,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:34,369 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 00:05:34,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 00:05:34,369 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 00:05:34,369 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 00:05:34,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:05:34,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 00:05:35,081 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 26 [2020-09-25 00:05:35,163 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 00:05:35,163 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:05:35,164 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:05:35,164 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 00:05:35,164 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 00:05:35,164 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:05:35,164 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 00:05:35,164 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 00:05:35,164 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 00:05:35,164 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 00:05:35,165 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 00:05:35,165 INFO L268 CegarLoopResult]: For program point L31(lines 23 33) no Hoare annotation was computed. [2020-09-25 00:05:35,165 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 37) no Hoare annotation was computed. [2020-09-25 00:05:35,165 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 00:05:35,165 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-25 00:05:35,165 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-25 00:05:35,166 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 00:05:35,166 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 00:05:35,166 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 00:05:35,167 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 00:05:35,167 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 00:05:35,167 INFO L268 CegarLoopResult]: For program point L24-1(lines 24 32) no Hoare annotation was computed. [2020-09-25 00:05:35,167 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 00:05:35,168 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-09-25 00:05:35,168 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 00:05:35,168 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 00:05:35,168 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 00:05:35,168 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 00:05:35,168 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-25 00:05:35,168 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-25 00:05:35,169 INFO L264 CegarLoopResult]: At program point L25-5(lines 25 27) the Hoare annotation is: (let ((.cse5 (* 2 main_~i~0))) (let ((.cse3 (* main_~i~0 2)) (.cse7 (+ .cse5 1))) (let ((.cse0 (<= .cse7 main_~j~0)) (.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= .cse7 main_~k~0)) (.cse6 (<= main_~k~0 main_~n~0)) (.cse4 (= .cse3 main_~j~0))) (or (and (<= (+ main_~k~0 1) main_~n~0) .cse0 .cse1 .cse2) (and (= .cse3 main_~k~0) .cse1 .cse4) (and (<= (+ .cse5 2) main_~k~0) .cse0 .cse1 .cse6) (and .cse2 .cse6 .cse4))))) [2020-09-25 00:05:35,169 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 00:05:35,169 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 00:05:35,170 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 37) no Hoare annotation was computed. [2020-09-25 00:05:35,170 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 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 (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1 .cse2))) [2020-09-25 00:05:35,170 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 37) the Hoare annotation is: true [2020-09-25 00:05:35,170 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 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 (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1 .cse2))) [2020-09-25 00:05:35,170 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~i~0) 1))) (let ((.cse2 (<= .cse1 main_~k~0)) (.cse0 (<= (+ main_~k~0 1) main_~n~0))) (or (and .cse0 (<= .cse1 main_~j~0) (<= (+ main_~j~0 1) main_~n~0) .cse2) (and (let ((.cse4 (* main_~i~0 2))) (let ((.cse3 (= .cse4 main_~j~0))) (or (and .cse2 .cse3) (and (= .cse4 main_~k~0) .cse3)))) .cse0)))) [2020-09-25 00:05:35,171 INFO L268 CegarLoopResult]: For program point L26-1(lines 25 27) no Hoare annotation was computed. [2020-09-25 00:05:35,171 INFO L268 CegarLoopResult]: For program point L22-2(lines 22 34) no Hoare annotation was computed. [2020-09-25 00:05:35,171 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-25 00:05:35,171 INFO L268 CegarLoopResult]: For program point L18(lines 18 21) no Hoare annotation was computed. [2020-09-25 00:05:35,171 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 00:05:35,171 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 21) no Hoare annotation was computed. [2020-09-25 00:05:35,171 INFO L264 CegarLoopResult]: At program point L22-5(lines 22 34) the Hoare annotation is: (and (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-09-25 00:05:35,172 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 00:05:35,172 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 00:05:35,172 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 00:05:35,172 INFO L271 CegarLoopResult]: At program point L35(lines 13 37) the Hoare annotation is: true [2020-09-25 00:05:35,173 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 00:05:35,173 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 00:05:35,173 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 00:05:35,173 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 00:05:35,173 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 00:05:35,173 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 00:05:35,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:05:35 BoogieIcfgContainer [2020-09-25 00:05:35,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:05:35,211 INFO L168 Benchmark]: Toolchain (without parser) took 14378.18 ms. Allocated memory was 138.9 MB in the beginning and 328.7 MB in the end (delta: 189.8 MB). Free memory was 102.2 MB in the beginning and 207.2 MB in the end (delta: -105.1 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. [2020-09-25 00:05:35,212 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 00:05:35,213 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.85 ms. Allocated memory is still 138.9 MB. Free memory was 101.5 MB in the beginning and 92.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 00:05:35,214 INFO L168 Benchmark]: Boogie Preprocessor took 117.48 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.0 MB in the beginning and 181.3 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-09-25 00:05:35,217 INFO L168 Benchmark]: RCFGBuilder took 406.33 ms. Allocated memory is still 201.3 MB. Free memory was 181.3 MB in the beginning and 164.1 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-09-25 00:05:35,220 INFO L168 Benchmark]: TraceAbstraction took 13511.35 ms. Allocated memory was 201.3 MB in the beginning and 328.7 MB in the end (delta: 127.4 MB). Free memory was 163.4 MB in the beginning and 207.2 MB in the end (delta: -43.8 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:05:35,229 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.85 ms. Allocated memory is still 138.9 MB. Free memory was 101.5 MB in the beginning and 92.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.48 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.0 MB in the beginning and 181.3 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 406.33 ms. Allocated memory is still 201.3 MB. Free memory was 181.3 MB in the beginning and 164.1 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13511.35 ms. Allocated memory was 201.3 MB in the beginning and 328.7 MB in the end (delta: 127.4 MB). Free memory was 163.4 MB in the beginning and 207.2 MB in the end (delta: -43.8 MB). Peak memory consumption was 83.6 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 && k <= n - 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: (((((k + 1 <= n && 2 * i + 1 <= j) && j + 1 <= n) && 2 * i + 1 <= k) || ((i * 2 == k && j + 1 <= n) && i * 2 == j)) || (((2 * i + 2 <= k && 2 * i + 1 <= j) && j + 1 <= n) && k <= n)) || ((2 * i + 1 <= k && k <= n) && i * 2 == j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.5s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 521 SDtfs, 391 SDslu, 2182 SDs, 0 SdLazy, 1232 SolverSat, 94 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred 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: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 305 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 31 PreInvPairs, 55 NumberOfFragments, 252 HoareAnnotationTreeSize, 31 FomulaSimplifications, 19455 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 12 FomulaSimplificationsInter, 502 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 362 NumberOfCodeBlocks, 362 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 353 ConstructedInterpolants, 0 QuantifiedInterpolants, 37773 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 60/75 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...