/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:29:17,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:29:17,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:29:17,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:29:17,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:29:17,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:29:17,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:29:17,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:29:17,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:29:17,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:29:17,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:29:17,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:29:17,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:29:17,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:29:17,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:29:17,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:29:17,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:29:17,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:29:17,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:29:17,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:29:17,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:29:17,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:29:17,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:29:17,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:29:17,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:29:17,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:29:17,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:29:17,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:29:17,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:29:17,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:29:17,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:29:17,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:29:17,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:29:17,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:29:17,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:29:17,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:29:17,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:29:17,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:29:17,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:29:17,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:29:17,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:29:17,174 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 13:29:17,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:29:17,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:29:17,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:29:17,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:29:17,225 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:29:17,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:29:17,226 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:29:17,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:29:17,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:29:17,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:29:17,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:29:17,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:29:17,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:29:17,228 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:29:17,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:29:17,229 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:29:17,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:29:17,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:29:17,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:29:17,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:29:17,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:29:17,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:29:17,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:29:17,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:29:17,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:29:17,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:29:17,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:29:17,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:29:17,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:29:17,232 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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:29:17,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:29:17,738 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:29:17,744 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:29:17,747 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:29:17,747 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:29:17,748 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-25 13:29:17,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14b24d13b/2fd64d1fed414caab950cb732f255aae/FLAG2cbccc99d [2020-09-25 13:29:18,528 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:29:18,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-25 13:29:18,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14b24d13b/2fd64d1fed414caab950cb732f255aae/FLAG2cbccc99d [2020-09-25 13:29:18,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14b24d13b/2fd64d1fed414caab950cb732f255aae [2020-09-25 13:29:18,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:29:18,748 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:29:18,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:18,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:29:18,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:29:18,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:18" (1/1) ... [2020-09-25 13:29:18,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:18, skipping insertion in model container [2020-09-25 13:29:18,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:18" (1/1) ... [2020-09-25 13:29:18,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:29:18,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:29:19,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:19,344 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:29:19,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:19,636 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:29:19,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:19 WrapperNode [2020-09-25 13:29:19,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:19,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:29:19,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:29:19,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:29:19,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:19" (1/1) ... [2020-09-25 13:29:19,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:19" (1/1) ... [2020-09-25 13:29:19,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:19" (1/1) ... [2020-09-25 13:29:19,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:19" (1/1) ... [2020-09-25 13:29:19,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:19" (1/1) ... [2020-09-25 13:29:19,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:19" (1/1) ... [2020-09-25 13:29:19,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:19" (1/1) ... [2020-09-25 13:29:19,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:29:19,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:29:19,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:29:19,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:29:19,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:19" (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 13:29:19,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:29:19,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:29:19,855 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:29:19,856 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:29:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:29:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:29:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:29:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:29:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:29:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:29:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:29:21,217 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:29:21,217 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:29:21,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:21 BoogieIcfgContainer [2020-09-25 13:29:21,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:29:21,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:29:21,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:29:21,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:29:21,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:29:18" (1/3) ... [2020-09-25 13:29:21,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:21, skipping insertion in model container [2020-09-25 13:29:21,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:19" (2/3) ... [2020-09-25 13:29:21,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:21, skipping insertion in model container [2020-09-25 13:29:21,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:21" (3/3) ... [2020-09-25 13:29:21,237 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label35.c [2020-09-25 13:29:21,251 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:29:21,263 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:29:21,287 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:29:21,324 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:29:21,324 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:29:21,324 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:29:21,324 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:29:21,324 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:29:21,325 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:29:21,325 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:29:21,325 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:29:21,358 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:29:21,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 13:29:21,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:21,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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 13:29:21,380 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:21,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:21,389 INFO L82 PathProgramCache]: Analyzing trace with hash -850053121, now seen corresponding path program 1 times [2020-09-25 13:29:21,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:21,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-25 13:29:21,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:21,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:22,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:22,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:23,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:24,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:24,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:26,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:26,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 13:29:26,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:29:26,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:29:26,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:26,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:26,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:29:26,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:29:26,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 13:29:26,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:29:26,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:26,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:26,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:26,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:26,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:26,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 13:29:26,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:26,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:26,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:26,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:26,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:29:26,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:29:27,015 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 13:29:27,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-25 13:29:27,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:29:27,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:29:27,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527556609] [2020-09-25 13:29:27,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:29:27,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:27,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:29:27,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:29:27,053 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 13:29:29,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:29,214 INFO L93 Difference]: Finished difference Result 1231 states and 1630 transitions. [2020-09-25 13:29:29,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:29:29,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2020-09-25 13:29:29,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:29,240 INFO L225 Difference]: With dead ends: 1231 [2020-09-25 13:29:29,241 INFO L226 Difference]: Without dead ends: 657 [2020-09-25 13:29:29,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:29,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-09-25 13:29:29,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 603. [2020-09-25 13:29:29,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 13:29:29,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 707 transitions. [2020-09-25 13:29:29,357 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 707 transitions. Word has length 108 [2020-09-25 13:29:29,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:29,359 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 707 transitions. [2020-09-25 13:29:29,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:29:29,359 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 707 transitions. [2020-09-25 13:29:29,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 13:29:29,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:29,368 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1] [2020-09-25 13:29:29,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:29:29,369 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:29,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:29,370 INFO L82 PathProgramCache]: Analyzing trace with hash 626429774, now seen corresponding path program 1 times [2020-09-25 13:29:29,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:29,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197478162] [2020-09-25 13:29:29,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:29,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:29,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:29,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 13:29:29,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:29,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-09-25 13:29:29,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:29,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:29,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:29,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 13:29:29,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 13:29:29,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:29,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:29,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:29,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:29,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:29,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:29,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:29:29,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:29,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:29,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:29,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:29,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:29,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:30,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:30,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:30,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:30,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:30,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:30,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:29:30,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:30,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:30,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:30,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:30,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:29:30,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:30,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197478162] [2020-09-25 13:29:30,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:30,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:30,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774386382] [2020-09-25 13:29:30,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:30,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:30,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:30,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:30,107 INFO L87 Difference]: Start difference. First operand 603 states and 707 transitions. Second operand 5 states. [2020-09-25 13:29:32,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:32,123 INFO L93 Difference]: Finished difference Result 1499 states and 1830 transitions. [2020-09-25 13:29:32,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:32,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 13:29:32,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:32,140 INFO L225 Difference]: With dead ends: 1499 [2020-09-25 13:29:32,140 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 13:29:32,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:29:32,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 13:29:32,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 891. [2020-09-25 13:29:32,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 13:29:32,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1042 transitions. [2020-09-25 13:29:32,188 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1042 transitions. Word has length 129 [2020-09-25 13:29:32,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:32,189 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1042 transitions. [2020-09-25 13:29:32,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:32,190 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1042 transitions. [2020-09-25 13:29:32,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-25 13:29:32,194 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:32,194 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:32,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:29:32,194 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:32,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:32,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1590256115, now seen corresponding path program 1 times [2020-09-25 13:29:32,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:32,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405235132] [2020-09-25 13:29:32,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:32,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:32,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:32,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:32,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:33,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:33,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:33,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:34,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:35,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:36,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:36,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:37,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:37,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:37,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 13:29:37,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 13:29:37,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:29:37,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:37,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 13:29:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 13:29:37,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:37,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:37,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:37,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:37,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:37,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:37,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:29:37,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:37,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:37,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:37,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:37,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:37,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:37,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:29:37,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:37,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:29:37,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:37,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:29:37,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:37,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:37,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405235132] [2020-09-25 13:29:37,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:37,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:37,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333500801] [2020-09-25 13:29:37,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:37,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:37,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:37,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:37,441 INFO L87 Difference]: Start difference. First operand 891 states and 1042 transitions. Second operand 5 states. [2020-09-25 13:29:39,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:39,519 INFO L93 Difference]: Finished difference Result 2363 states and 2850 transitions. [2020-09-25 13:29:39,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:39,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-09-25 13:29:39,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:39,533 INFO L225 Difference]: With dead ends: 2363 [2020-09-25 13:29:39,533 INFO L226 Difference]: Without dead ends: 1348 [2020-09-25 13:29:39,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:29:39,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2020-09-25 13:29:39,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1313. [2020-09-25 13:29:39,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1313 states. [2020-09-25 13:29:39,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1553 transitions. [2020-09-25 13:29:39,608 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1553 transitions. Word has length 130 [2020-09-25 13:29:39,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:39,608 INFO L479 AbstractCegarLoop]: Abstraction has 1313 states and 1553 transitions. [2020-09-25 13:29:39,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:39,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1553 transitions. [2020-09-25 13:29:39,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 13:29:39,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:39,615 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1] [2020-09-25 13:29:39,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:29:39,615 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:39,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:39,616 INFO L82 PathProgramCache]: Analyzing trace with hash -247402504, now seen corresponding path program 1 times [2020-09-25 13:29:39,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:39,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380146263] [2020-09-25 13:29:39,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:39,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:39,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:39,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:40,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:40,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:40,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:44,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:44,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 13:29:44,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:29:44,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:29:44,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:44,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:29:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:29:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 13:29:44,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:44,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:44,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:44,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:44,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:44,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:44,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:29:44,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:44,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:44,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:44,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:44,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:29:44,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:44,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:44,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:44,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:44,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:44,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:44,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:29:44,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 13:29:44,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:44,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:29:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:29:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:29:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:44,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:29:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:44,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:44,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:44,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:29:44,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:44,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 13:29:44,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:44,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:44,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:44,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:29:44,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:29:44,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:29:45,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380146263] [2020-09-25 13:29:45,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:45,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:29:45,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335322424] [2020-09-25 13:29:45,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:29:45,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:45,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:29:45,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:29:45,087 INFO L87 Difference]: Start difference. First operand 1313 states and 1553 transitions. Second operand 10 states. [2020-09-25 13:29:45,259 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-09-25 13:29:45,431 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-25 13:29:46,648 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-09-25 13:29:48,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:48,600 INFO L93 Difference]: Finished difference Result 3364 states and 4075 transitions. [2020-09-25 13:29:48,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:29:48,601 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 154 [2020-09-25 13:29:48,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:48,609 INFO L225 Difference]: With dead ends: 3364 [2020-09-25 13:29:48,609 INFO L226 Difference]: Without dead ends: 1514 [2020-09-25 13:29:48,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-09-25 13:29:48,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2020-09-25 13:29:48,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1486. [2020-09-25 13:29:48,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1486 states. [2020-09-25 13:29:48,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 1702 transitions. [2020-09-25 13:29:48,671 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 1702 transitions. Word has length 154 [2020-09-25 13:29:48,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:48,672 INFO L479 AbstractCegarLoop]: Abstraction has 1486 states and 1702 transitions. [2020-09-25 13:29:48,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:29:48,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 1702 transitions. [2020-09-25 13:29:48,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 13:29:48,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:48,677 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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 13:29:48,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:29:48,677 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:48,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:48,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1106704956, now seen corresponding path program 1 times [2020-09-25 13:29:48,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:48,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228181971] [2020-09-25 13:29:48,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:48,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:48,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:49,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:49,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:49,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:49,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:49,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:49,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:53,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:53,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 13:29:53,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:29:53,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:29:53,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:53,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:29:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:29:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 13:29:53,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:53,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:53,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:53,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:53,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:53,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:53,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 13:29:53,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:53,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:53,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:29:53,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:53,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:29:53,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:53,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:53,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:53,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:53,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:29:53,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:53,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 13:29:53,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:53,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:29:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:29:53,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:54,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 13:29:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:54,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:54,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:54,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:29:54,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:29:54,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:54,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:29:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:54,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:54,165 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:29:54,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228181971] [2020-09-25 13:29:54,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:54,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:29:54,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913275401] [2020-09-25 13:29:54,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:29:54,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:54,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:29:54,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:29:54,168 INFO L87 Difference]: Start difference. First operand 1486 states and 1702 transitions. Second operand 8 states. [2020-09-25 13:29:54,665 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-25 13:29:57,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:57,200 INFO L93 Difference]: Finished difference Result 4306 states and 5063 transitions. [2020-09-25 13:29:57,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 13:29:57,201 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-09-25 13:29:57,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:57,218 INFO L225 Difference]: With dead ends: 4306 [2020-09-25 13:29:57,218 INFO L226 Difference]: Without dead ends: 2854 [2020-09-25 13:29:57,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:29:57,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2020-09-25 13:29:57,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1946. [2020-09-25 13:29:57,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1946 states. [2020-09-25 13:29:57,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2216 transitions. [2020-09-25 13:29:57,315 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2216 transitions. Word has length 162 [2020-09-25 13:29:57,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:57,315 INFO L479 AbstractCegarLoop]: Abstraction has 1946 states and 2216 transitions. [2020-09-25 13:29:57,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:29:57,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2216 transitions. [2020-09-25 13:29:57,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 13:29:57,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:57,321 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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 13:29:57,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:29:57,322 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:57,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:57,322 INFO L82 PathProgramCache]: Analyzing trace with hash 2100501785, now seen corresponding path program 1 times [2020-09-25 13:29:57,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:57,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178738184] [2020-09-25 13:29:57,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:57,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:57,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:57,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:57,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:58,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:58,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:58,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:01,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:01,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:02,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:02,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 13:30:02,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:30:02,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 13:30:02,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:02,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:02,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:30:02,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 13:30:02,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 13:30:02,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:02,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:02,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:02,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:02,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:02,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:02,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:30:02,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:02,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:02,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:02,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:02,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:02,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:30:02,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:02,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:30:02,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:02,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:02,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:02,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:02,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 13:30:02,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:02,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 13:30:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:02,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:02,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:02,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:02,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:30:02,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:30:02,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 13:30:02,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:02,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:30:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:02,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:30:02,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:02,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 13:30:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:02,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:02,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:02,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:30:02,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:02,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 13:30:02,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:02,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:02,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:30:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:30:02,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 70 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 13:30:02,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178738184] [2020-09-25 13:30:02,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:02,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:30:02,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177869195] [2020-09-25 13:30:02,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:30:02,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:02,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:30:02,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:30:02,891 INFO L87 Difference]: Start difference. First operand 1946 states and 2216 transitions. Second operand 9 states. [2020-09-25 13:30:03,827 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65