/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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/Problem02_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:55:19,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:55:19,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:55:19,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:55:19,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:55:19,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:55:19,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:55:19,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:55:19,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:55:19,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:55:19,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:55:19,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:55:19,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:55:19,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:55:19,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:55:19,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:55:19,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:55:19,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:55:19,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:55:19,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:55:19,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:55:19,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:55:19,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:55:19,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:55:19,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:55:19,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:55:19,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:55:19,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:55:19,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:55:19,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:55:19,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:55:19,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:55:19,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:55:19,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:55:19,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:55:19,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:55:19,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:55:19,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:55:19,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:55:19,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:55:19,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:55:19,167 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 07:55:19,215 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:55:19,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:55:19,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:55:19,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:55:19,221 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:55:19,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:55:19,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:55:19,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:55:19,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:55:19,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:55:19,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:55:19,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:55:19,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:55:19,223 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:55:19,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:55:19,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:55:19,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:55:19,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:55:19,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:55:19,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:55:19,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:55:19,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:55:19,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:55:19,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:55:19,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:55:19,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:55:19,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:55:19,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:55:19,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:55:19,227 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:55:19,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:55:19,695 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:55:19,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:55:19,703 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:55:19,703 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:55:19,704 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2020-09-25 07:55:19,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c15d5da66/3d8d415ed2a74f1d81e0abaae52c9b70/FLAG060b56cc7 [2020-09-25 07:55:20,413 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:55:20,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2020-09-25 07:55:20,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c15d5da66/3d8d415ed2a74f1d81e0abaae52c9b70/FLAG060b56cc7 [2020-09-25 07:55:20,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c15d5da66/3d8d415ed2a74f1d81e0abaae52c9b70 [2020-09-25 07:55:20,640 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:55:20,646 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:55:20,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:20,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:55:20,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:55:20,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:20" (1/1) ... [2020-09-25 07:55:20,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe12ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:20, skipping insertion in model container [2020-09-25 07:55:20,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:20" (1/1) ... [2020-09-25 07:55:20,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:55:20,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:55:21,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:21,193 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:55:21,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:21,415 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:55:21,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:21 WrapperNode [2020-09-25 07:55:21,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:21,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:55:21,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:55:21,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:55:21,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:21" (1/1) ... [2020-09-25 07:55:21,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:21" (1/1) ... [2020-09-25 07:55:21,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:21" (1/1) ... [2020-09-25 07:55:21,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:21" (1/1) ... [2020-09-25 07:55:21,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:21" (1/1) ... [2020-09-25 07:55:21,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:21" (1/1) ... [2020-09-25 07:55:21,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:21" (1/1) ... [2020-09-25 07:55:21,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:55:21,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:55:21,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:55:21,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:55:21,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:21" (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 07:55:21,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:55:21,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:55:21,594 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:55:21,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:55:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:55:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:55:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:55:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:55:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:55:21,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:55:21,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:55:22,832 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:55:22,832 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:55:22,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:22 BoogieIcfgContainer [2020-09-25 07:55:22,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:55:22,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:55:22,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:55:22,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:55:22,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:55:20" (1/3) ... [2020-09-25 07:55:22,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3887f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:22, skipping insertion in model container [2020-09-25 07:55:22,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:21" (2/3) ... [2020-09-25 07:55:22,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3887f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:22, skipping insertion in model container [2020-09-25 07:55:22,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:22" (3/3) ... [2020-09-25 07:55:22,852 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label57.c [2020-09-25 07:55:22,864 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:55:22,876 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:55:22,899 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:55:22,933 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:55:22,933 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:55:22,933 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:55:22,933 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:55:22,934 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:55:22,934 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:55:22,934 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:55:22,934 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:55:22,966 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:55:22,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 07:55:22,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:22,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:22,987 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:22,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:22,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1788019222, now seen corresponding path program 1 times [2020-09-25 07:55:23,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:23,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66102414] [2020-09-25 07:55:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:23,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:23,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:23,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:23,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:24,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:25,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:27,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:27,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:28,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:28,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:28,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 07:55:28,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:55:28,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 07:55:28,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:28,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:28,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:28,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 07:55:28,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 07:55:28,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 07:55:28,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:28,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:28,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:28,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:28,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:28,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:55:28,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:28,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:28,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:28,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:28,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 07:55:28,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:28,718 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 07:55:28,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66102414] [2020-09-25 07:55:28,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:28,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:55:28,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91264573] [2020-09-25 07:55:28,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:55:28,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:28,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:55:28,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:55:28,752 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 07:55:31,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:31,095 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 07:55:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:55:31,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-09-25 07:55:31,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:31,141 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 07:55:31,141 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 07:55:31,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 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 07:55:31,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 07:55:31,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 07:55:31,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 07:55:31,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 07:55:31,320 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 117 [2020-09-25 07:55:31,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:31,321 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 07:55:31,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:55:31,322 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 07:55:31,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 07:55:31,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:31,334 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:31,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:55:31,335 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:31,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:31,336 INFO L82 PathProgramCache]: Analyzing trace with hash -890048490, now seen corresponding path program 1 times [2020-09-25 07:55:31,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:31,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062253915] [2020-09-25 07:55:31,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:31,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:31,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:31,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:32,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:33,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:33,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:33,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:35,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:36,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:36,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 07:55:36,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:55:36,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:55:36,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:36,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:36,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:36,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 07:55:36,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 07:55:36,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:36,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:36,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:36,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:36,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:36,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:36,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:36,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:36,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:36,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:36,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:36,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:36,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:36,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:36,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:36,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:36,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:55:36,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:36,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:55:36,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:36,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:55:36,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:36,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:36,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062253915] [2020-09-25 07:55:36,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:36,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:36,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567064561] [2020-09-25 07:55:36,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:36,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:36,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:36,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:36,675 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 07:55:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:38,247 INFO L93 Difference]: Finished difference Result 1622 states and 2084 transitions. [2020-09-25 07:55:38,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:38,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 07:55:38,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:38,256 INFO L225 Difference]: With dead ends: 1622 [2020-09-25 07:55:38,256 INFO L226 Difference]: Without dead ends: 979 [2020-09-25 07:55:38,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 07:55:38,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2020-09-25 07:55:38,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 967. [2020-09-25 07:55:38,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2020-09-25 07:55:38,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1216 transitions. [2020-09-25 07:55:38,303 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1216 transitions. Word has length 135 [2020-09-25 07:55:38,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:38,304 INFO L479 AbstractCegarLoop]: Abstraction has 967 states and 1216 transitions. [2020-09-25 07:55:38,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:38,304 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1216 transitions. [2020-09-25 07:55:38,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 07:55:38,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:38,315 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:55:38,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:55:38,316 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:38,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:38,317 INFO L82 PathProgramCache]: Analyzing trace with hash -334312447, now seen corresponding path program 1 times [2020-09-25 07:55:38,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:38,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318992378] [2020-09-25 07:55:38,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:38,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:38,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:38,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:39,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:40,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:41,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:41,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:42,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:43,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:43,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 07:55:43,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:55:43,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 07:55:43,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:43,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 07:55:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 07:55:43,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:43,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:43,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:43,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:43,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:43,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:43,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:55:43,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:43,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:43,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:43,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:43,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:43,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:43,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:43,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:43,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 07:55:43,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:43,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 07:55:43,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:43,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:43,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:43,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:43,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:55:43,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:43,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318992378] [2020-09-25 07:55:43,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:43,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:43,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323267447] [2020-09-25 07:55:43,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:43,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:43,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:43,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:43,622 INFO L87 Difference]: Start difference. First operand 967 states and 1216 transitions. Second operand 5 states. [2020-09-25 07:55:45,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:45,759 INFO L93 Difference]: Finished difference Result 2568 states and 3389 transitions. [2020-09-25 07:55:45,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:45,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 07:55:45,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:45,773 INFO L225 Difference]: With dead ends: 2568 [2020-09-25 07:55:45,773 INFO L226 Difference]: Without dead ends: 1623 [2020-09-25 07:55:45,778 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 07:55:45,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2020-09-25 07:55:45,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1575. [2020-09-25 07:55:45,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-09-25 07:55:45,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 1954 transitions. [2020-09-25 07:55:45,870 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 1954 transitions. Word has length 161 [2020-09-25 07:55:45,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:45,871 INFO L479 AbstractCegarLoop]: Abstraction has 1575 states and 1954 transitions. [2020-09-25 07:55:45,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:45,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 1954 transitions. [2020-09-25 07:55:45,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 07:55:45,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:45,878 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:55:45,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:55:45,879 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:45,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:45,879 INFO L82 PathProgramCache]: Analyzing trace with hash -2022775050, now seen corresponding path program 1 times [2020-09-25 07:55:45,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:45,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517746110] [2020-09-25 07:55:45,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:45,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:46,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:46,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:46,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:46,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:48,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:48,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:48,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:48,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:49,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:50,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:50,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:50,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 07:55:50,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 07:55:50,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:55:50,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:50,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 07:55:50,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 07:55:50,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:51,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:51,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:51,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:51,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:51,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:51,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:55:51,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:51,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:51,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:55:51,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:51,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:51,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:51,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:55:51,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:51,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:55:51,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:51,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:51,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:51,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:51,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:51,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:51,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 07:55:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:51,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:51,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:51,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:55:51,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:51,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 07:55:51,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:51,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 07:55:51,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 07:55:51,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517746110] [2020-09-25 07:55:51,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:51,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:51,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696938444] [2020-09-25 07:55:51,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:51,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:51,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:51,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:51,320 INFO L87 Difference]: Start difference. First operand 1575 states and 1954 transitions. Second operand 5 states. [2020-09-25 07:55:53,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:53,208 INFO L93 Difference]: Finished difference Result 3838 states and 4855 transitions. [2020-09-25 07:55:53,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:53,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-09-25 07:55:53,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:53,224 INFO L225 Difference]: With dead ends: 3838 [2020-09-25 07:55:53,225 INFO L226 Difference]: Without dead ends: 2285 [2020-09-25 07:55:53,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 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 07:55:53,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2020-09-25 07:55:53,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2179. [2020-09-25 07:55:53,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2179 states. [2020-09-25 07:55:53,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 2749 transitions. [2020-09-25 07:55:53,331 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 2749 transitions. Word has length 174 [2020-09-25 07:55:53,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:53,332 INFO L479 AbstractCegarLoop]: Abstraction has 2179 states and 2749 transitions. [2020-09-25 07:55:53,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:53,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 2749 transitions. [2020-09-25 07:55:53,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 07:55:53,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:53,344 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:55:53,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:55:53,344 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:53,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:53,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1188825606, now seen corresponding path program 1 times [2020-09-25 07:55:53,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:53,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611304312] [2020-09-25 07:55:53,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:53,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:53,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:53,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:53,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:54,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:54,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:55,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:58,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:58,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 07:55:58,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:55:58,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 07:55:58,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:58,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 07:55:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 07:55:58,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:58,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:58,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:58,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:58,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:58,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:58,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:58,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:58,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:58,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:58,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:58,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:58,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:58,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:58,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:58,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:58,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:55:58,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:58,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:55:58,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:58,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:55:58,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:58,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 07:55:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:58,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:58,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:58,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:55:58,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:58,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 07:55:58,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:58,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 07:55:58,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:55:58,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611304312] [2020-09-25 07:55:58,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:58,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:55:58,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380453156] [2020-09-25 07:55:58,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:55:58,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:58,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:55:58,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:55:58,694 INFO L87 Difference]: Start difference. First operand 2179 states and 2749 transitions. Second operand 8 states. [2020-09-25 07:56:02,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:02,204 INFO L93 Difference]: Finished difference Result 7233 states and 9840 transitions. [2020-09-25 07:56:02,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:56:02,204 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 181 [2020-09-25 07:56:02,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:02,235 INFO L225 Difference]: With dead ends: 7233 [2020-09-25 07:56:02,236 INFO L226 Difference]: Without dead ends: 5076 [2020-09-25 07:56:02,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:56:02,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2020-09-25 07:56:02,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 4414. [2020-09-25 07:56:02,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4414 states. [2020-09-25 07:56:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4414 states to 4414 states and 5734 transitions. [2020-09-25 07:56:02,406 INFO L78 Accepts]: Start accepts. Automaton has 4414 states and 5734 transitions. Word has length 181 [2020-09-25 07:56:02,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:02,406 INFO L479 AbstractCegarLoop]: Abstraction has 4414 states and 5734 transitions. [2020-09-25 07:56:02,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:56:02,406 INFO L276 IsEmpty]: Start isEmpty. Operand 4414 states and 5734 transitions. [2020-09-25 07:56:02,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 07:56:02,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:02,429 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:02,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:56:02,429 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:02,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:02,430 INFO L82 PathProgramCache]: Analyzing trace with hash -581823592, now seen corresponding path program 1 times [2020-09-25 07:56:02,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:02,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391329296] [2020-09-25 07:56:02,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:02,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:03,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:04,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:04,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:07,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:07,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 07:56:07,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:56:07,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:56:07,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:07,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:07,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 07:56:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 07:56:07,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:07,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:07,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:07,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:07,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:56:07,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:07,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:56:07,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:07,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:07,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:07,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:07,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:07,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:56:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:07,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:07,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:07,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:56:07,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:07,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:56:07,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:07,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:07,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:07,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:07,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 07:56:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:07,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:07,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:07,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:56:07,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:07,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 07:56:07,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:07,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:07,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:07,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 07:56:07,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 07:56:07,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:56:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 07:56:07,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391329296] [2020-09-25 07:56:07,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:07,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:56:07,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251592017] [2020-09-25 07:56:07,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:56:07,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:07,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:56:07,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:07,685 INFO L87 Difference]: Start difference. First operand 4414 states and 5734 transitions. Second operand 5 states. [2020-09-25 07:56:09,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:09,616 INFO L93 Difference]: Finished difference Result 10232 states and 13661 transitions. [2020-09-25 07:56:09,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:56:09,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 07:56:09,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:09,647 INFO L225 Difference]: With dead ends: 10232 [2020-09-25 07:56:09,647 INFO L226 Difference]: Without dead ends: 5850 [2020-09-25 07:56:09,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:56:09,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5850 states.