/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:54:13,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:54:13,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:54:13,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:54:13,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:54:13,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:54:13,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:54:13,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:54:13,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:54:13,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:54:13,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:54:13,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:54:13,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:54:13,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:54:13,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:54:13,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:54:13,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:54:13,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:54:13,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:54:13,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:54:13,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:54:13,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:54:13,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:54:13,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:54:13,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:54:13,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:54:13,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:54:13,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:54:13,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:54:13,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:54:13,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:54:13,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:54:13,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:54:13,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:54:13,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:54:13,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:54:13,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:54:13,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:54:13,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:54:13,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:54:13,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:54:13,249 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 23:54:13,296 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:54:13,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:54:13,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:54:13,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:54:13,299 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:54:13,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:54:13,300 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:54:13,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:54:13,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:54:13,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:54:13,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:54:13,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:54:13,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:54:13,302 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:54:13,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:54:13,303 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:54:13,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:54:13,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:54:13,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:54:13,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:54:13,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:54:13,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:54:13,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:54:13,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:54:13,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:54:13,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:54:13,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:54:13,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:54:13,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:54:13,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:54:13,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:54:13,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:54:13,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:54:13,789 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:54:13,790 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:54:13,791 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-24 23:54:13,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/615bf47fe/d5ebb2193d944daebb121d701c8b5102/FLAG7c89ef116 [2020-09-24 23:54:14,568 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:54:14,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-24 23:54:14,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/615bf47fe/d5ebb2193d944daebb121d701c8b5102/FLAG7c89ef116 [2020-09-24 23:54:14,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/615bf47fe/d5ebb2193d944daebb121d701c8b5102 [2020-09-24 23:54:14,814 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:54:14,819 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:54:14,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:54:14,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:54:14,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:54:14,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:54:14" (1/1) ... [2020-09-24 23:54:14,832 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 24.09 11:54:14, skipping insertion in model container [2020-09-24 23:54:14,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:54:14" (1/1) ... [2020-09-24 23:54:14,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:54:14,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:54:15,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:54:15,400 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:54:15,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:54:15,707 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:54:15,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:54:15 WrapperNode [2020-09-24 23:54:15,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:54:15,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:54:15,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:54:15,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:54:15,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:54:15" (1/1) ... [2020-09-24 23:54:15,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:54:15" (1/1) ... [2020-09-24 23:54:15,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:54:15" (1/1) ... [2020-09-24 23:54:15,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:54:15" (1/1) ... [2020-09-24 23:54:15,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:54:15" (1/1) ... [2020-09-24 23:54:15,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:54:15" (1/1) ... [2020-09-24 23:54:15,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:54:15" (1/1) ... [2020-09-24 23:54:15,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:54:15,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:54:15,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:54:15,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:54:15,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:54:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:54:15,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:54:15,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:54:15,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 23:54:15,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:54:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 23:54:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:54:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:54:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 23:54:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:54:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:54:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:54:17,425 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:54:17,425 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 23:54:17,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:54:17 BoogieIcfgContainer [2020-09-24 23:54:17,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:54:17,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:54:17,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:54:17,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:54:17,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:54:14" (1/3) ... [2020-09-24 23:54:17,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1df6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:54:17, skipping insertion in model container [2020-09-24 23:54:17,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:54:15" (2/3) ... [2020-09-24 23:54:17,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1df6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:54:17, skipping insertion in model container [2020-09-24 23:54:17,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:54:17" (3/3) ... [2020-09-24 23:54:17,447 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label50.c [2020-09-24 23:54:17,459 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:54:17,471 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:54:17,496 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:54:17,533 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:54:17,533 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:54:17,534 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:54:17,534 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:54:17,534 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:54:17,534 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:54:17,534 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:54:17,535 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:54:17,569 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 23:54:17,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 23:54:17,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:54:17,589 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] [2020-09-24 23:54:17,590 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:54:17,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:54:17,598 INFO L82 PathProgramCache]: Analyzing trace with hash 249673445, now seen corresponding path program 1 times [2020-09-24 23:54:17,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:54:17,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304694061] [2020-09-24 23:54:17,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:54:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:18,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:18,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:19,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:20,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:20,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:20,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:22,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:22,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:22,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-24 23:54:22,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:54:22,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 23:54:22,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:22,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 23:54:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 23:54:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 23:54:22,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:54:23,673 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-09-24 23:54:23,807 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 36 [2020-09-24 23:54:23,967 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-09-24 23:54:24,125 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 35 [2020-09-24 23:54:24,286 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 34 [2020-09-24 23:54:24,446 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 33 [2020-09-24 23:54:24,609 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 29 [2020-09-24 23:54:24,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:54:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:24,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:24,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:24,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:54:24,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:54:24,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 23:54:24,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:24,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:54:24,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:54:24,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:54:24,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:54:25,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:54:25,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304694061] [2020-09-24 23:54:25,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:54:25,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-24 23:54:25,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295148344] [2020-09-24 23:54:25,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 23:54:25,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:54:25,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 23:54:25,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-24 23:54:25,137 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 18 states. [2020-09-24 23:54:25,807 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-24 23:54:26,174 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-09-24 23:54:26,510 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2020-09-24 23:54:27,050 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2020-09-24 23:54:28,184 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2020-09-24 23:54:28,749 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2020-09-24 23:54:29,568 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-09-24 23:54:29,890 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-24 23:54:30,217 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-09-24 23:54:31,263 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-09-24 23:54:34,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:54:34,192 INFO L93 Difference]: Finished difference Result 1700 states and 2421 transitions. [2020-09-24 23:54:34,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 23:54:34,195 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 107 [2020-09-24 23:54:34,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:54:34,224 INFO L225 Difference]: With dead ends: 1700 [2020-09-24 23:54:34,224 INFO L226 Difference]: Without dead ends: 1101 [2020-09-24 23:54:34,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=384, Invalid=948, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 23:54:34,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-09-24 23:54:34,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 985. [2020-09-24 23:54:34,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-09-24 23:54:34,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1147 transitions. [2020-09-24 23:54:34,368 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1147 transitions. Word has length 107 [2020-09-24 23:54:34,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:54:34,369 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1147 transitions. [2020-09-24 23:54:34,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 23:54:34,369 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1147 transitions. [2020-09-24 23:54:34,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-24 23:54:34,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:54:34,379 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 23:54:34,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:54:34,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:54:34,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:54:34,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1260031962, now seen corresponding path program 1 times [2020-09-24 23:54:34,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:54:34,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924603471] [2020-09-24 23:54:34,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:54:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:34,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:34,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:35,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:35,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:35,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:36,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:37,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:37,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:39,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:39,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-24 23:54:39,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 23:54:39,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-24 23:54:39,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:39,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:54:39,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 23:54:39,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 23:54:39,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 23:54:39,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:54:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:39,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:39,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:39,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:54:39,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:54:39,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 23:54:39,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:39,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:54:39,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:54:39,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:54:39,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:54:39,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 23:54:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:39,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:39,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:39,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:39,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:54:39,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:54:39,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 23:54:39,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:39,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:54:39,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:54:39,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:54:39,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:54:39,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 23:54:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:39,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:39,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:39,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:39,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 23:54:39,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:54:39,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 23:54:39,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:54:39,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:54:39,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 23:54:39,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:54:39,860 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-24 23:54:39,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924603471] [2020-09-24 23:54:39,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:54:39,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 23:54:39,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554695175] [2020-09-24 23:54:39,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:54:39,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:54:39,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:54:39,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:54:39,865 INFO L87 Difference]: Start difference. First operand 985 states and 1147 transitions. Second operand 6 states. [2020-09-24 23:54:42,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:54:42,061 INFO L93 Difference]: Finished difference Result 2382 states and 2886 transitions. [2020-09-24 23:54:42,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 23:54:42,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-09-24 23:54:42,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:54:42,073 INFO L225 Difference]: With dead ends: 2382 [2020-09-24 23:54:42,073 INFO L226 Difference]: Without dead ends: 1485 [2020-09-24 23:54:42,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:54:42,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2020-09-24 23:54:42,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1281. [2020-09-24 23:54:42,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2020-09-24 23:54:42,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1534 transitions. [2020-09-24 23:54:42,144 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1534 transitions. Word has length 145 [2020-09-24 23:54:42,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:54:42,148 INFO L479 AbstractCegarLoop]: Abstraction has 1281 states and 1534 transitions. [2020-09-24 23:54:42,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:54:42,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1534 transitions. [2020-09-24 23:54:42,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-24 23:54:42,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:54:42,161 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 23:54:42,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:54:42,162 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:54:42,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:54:42,163 INFO L82 PathProgramCache]: Analyzing trace with hash 281598029, now seen corresponding path program 1 times [2020-09-24 23:54:42,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:54:42,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40448835] [2020-09-24 23:54:42,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:54:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:42,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:42,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:42,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:42,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:42,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:47,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:47,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-24 23:54:47,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 23:54:47,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 23:54:47,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:47,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:54:47,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 23:54:47,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 23:54:47,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:54:47,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:54:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:47,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:47,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:47,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:54:47,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:54:47,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 23:54:47,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:47,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:54:47,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:54:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:54:47,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:54:47,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 23:54:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:47,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:47,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:47,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:47,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 23:54:47,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:54:47,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 23:54:47,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:47,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:54:47,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:54:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 23:54:47,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:54:47,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 23:54:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:47,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:47,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:47,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:54:47,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:54:47,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 23:54:47,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:47,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:54:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:54:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 23:54:47,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:54:47,749 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 23:54:47,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40448835] [2020-09-24 23:54:47,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:54:47,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 23:54:47,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439258026] [2020-09-24 23:54:47,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:54:47,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:54:47,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:54:47,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:54:47,754 INFO L87 Difference]: Start difference. First operand 1281 states and 1534 transitions. Second operand 9 states. [2020-09-24 23:54:50,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:54:50,980 INFO L93 Difference]: Finished difference Result 3034 states and 3692 transitions. [2020-09-24 23:54:50,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 23:54:50,982 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-09-24 23:54:50,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:54:50,993 INFO L225 Difference]: With dead ends: 3034 [2020-09-24 23:54:50,993 INFO L226 Difference]: Without dead ends: 1841 [2020-09-24 23:54:50,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-09-24 23:54:51,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2020-09-24 23:54:51,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1614. [2020-09-24 23:54:51,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1614 states. [2020-09-24 23:54:51,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 1927 transitions. [2020-09-24 23:54:51,059 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 1927 transitions. Word has length 158 [2020-09-24 23:54:51,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:54:51,059 INFO L479 AbstractCegarLoop]: Abstraction has 1614 states and 1927 transitions. [2020-09-24 23:54:51,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:54:51,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 1927 transitions. [2020-09-24 23:54:51,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-24 23:54:51,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:54:51,066 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:54:51,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:54:51,067 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:54:51,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:54:51,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1334073201, now seen corresponding path program 1 times [2020-09-24 23:54:51,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:54:51,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005428607] [2020-09-24 23:54:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:54:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:51,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:51,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:52,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:52,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-24 23:54:52,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:54:52,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1171 [2020-09-24 23:54:52,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:52,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:54:52,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 23:54:52,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 23:54:52,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:54:52,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:54:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:52,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:52,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:52,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:54:52,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:54:52,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 23:54:52,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:52,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:54:52,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:54:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:54:52,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:54:52,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 23:54:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:52,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:52,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:52,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:54:52,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:54:52,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:54:52,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:54:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:54:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:54:52,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:54:52,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 23:54:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:52,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:52,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:52,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 23:54:52,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:54:52,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 23:54:52,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:52,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:54:52,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:54:52,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 23:54:52,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:54:52,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 23:54:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:52,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:52,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:54:52,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:54:52,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:54:52,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 23:54:52,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:54:52,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:54:52,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 23:54:52,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:54:52,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:54:52,585 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 62 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 23:54:52,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005428607] [2020-09-24 23:54:52,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:54:52,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 23:54:52,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282308755] [2020-09-24 23:54:52,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:54:52,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:54:52,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:54:52,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:54:52,588 INFO L87 Difference]: Start difference. First operand 1614 states and 1927 transitions. Second operand 7 states. [2020-09-24 23:54:54,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:54:54,985 INFO L93 Difference]: Finished difference Result 3824 states and 4717 transitions. [2020-09-24 23:54:54,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 23:54:54,986 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-09-24 23:54:54,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:54:54,998 INFO L225 Difference]: With dead ends: 3824 [2020-09-24 23:54:54,999 INFO L226 Difference]: Without dead ends: 2298 [2020-09-24 23:54:55,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:54:55,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2020-09-24 23:54:55,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2194. [2020-09-24 23:54:55,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2194 states. [2020-09-24 23:54:55,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 2708 transitions. [2020-09-24 23:54:55,075 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 2708 transitions. Word has length 175 [2020-09-24 23:54:55,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:54:55,076 INFO L479 AbstractCegarLoop]: Abstraction has 2194 states and 2708 transitions. [2020-09-24 23:54:55,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:54:55,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 2708 transitions. [2020-09-24 23:54:55,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-24 23:54:55,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:54:55,086 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 23:54:55,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:54:55,086 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:54:55,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:54:55,086 INFO L82 PathProgramCache]: Analyzing trace with hash -810709778, now seen corresponding path program 1 times [2020-09-24 23:54:55,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:54:55,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649596357] [2020-09-24 23:54:55,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:54:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:54:55,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:55,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:55,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:55,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:56,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:56,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:57,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:57,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:54:57,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:00,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:55:00,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-24 23:55:00,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 23:55:00,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 23:55:00,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:55:00,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:55:00,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 23:55:00,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 23:55:00,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:55:00,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:55:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:55:00,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:00,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:55:00,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:55:00,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:55:00,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 23:55:00,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:55:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:55:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:55:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 23:55:00,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:55:00,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 23:55:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:55:00,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:00,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:00,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:55:00,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:55:00,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:55:00,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 23:55:00,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:55:00,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:55:00,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:55:00,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:55:00,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:55:00,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 23:55:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:55:00,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:00,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:55:00,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:55:00,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:55:00,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 23:55:00,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:55:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:55:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:55:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 23:55:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:55:00,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 23:55:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:55:00,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:00,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:55:00,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:55:00,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:55:00,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 23:55:00,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:55:00,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:55:00,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 23:55:00,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:55:00,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:55:00,657 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 67 proven. 18 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 23:55:00,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649596357] [2020-09-24 23:55:00,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:55:00,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 23:55:00,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499099938] [2020-09-24 23:55:00,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 23:55:00,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:55:00,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 23:55:00,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-24 23:55:00,662 INFO L87 Difference]: Start difference. First operand 2194 states and 2708 transitions. Second operand 10 states. [2020-09-24 23:55:00,884 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-09-24 23:55:02,079 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65