/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 SequenceOfStatements --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=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:02:39,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:02:39,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:02:39,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:02:39,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:02:39,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:02:39,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:02:39,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:02:39,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:02:39,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:02:39,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:02:39,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:02:39,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:02:39,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:02:39,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:02:39,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:02:39,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:02:39,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:02:39,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:02:39,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:02:39,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:02:39,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:02:39,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:02:39,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:02:39,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:02:39,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:02:39,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:02:39,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:02:39,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:02:39,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:02:39,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:02:39,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:02:39,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:02:39,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:02:39,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:02:39,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:02:39,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:02:39,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:02:39,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:02:39,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:02:39,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:02:39,092 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 [2020-10-14 03:02:39,142 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:02:39,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:02:39,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:02:39,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:02:39,145 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:02:39,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:02:39,146 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:02:39,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:02:39,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:02:39,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:02:39,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:02:39,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:02:39,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:02:39,147 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:02:39,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:02:39,147 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:02:39,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:02:39,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:02:39,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:02:39,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:02:39,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:02:39,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:02:39,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:02:39,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:02:39,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:02:39,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:02:39,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:02:39,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:02:39,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:02:39,151 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 -> SequenceOfStatements 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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:02:39,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:02:39,512 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:02:39,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:02:39,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:02:39,517 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:02:39,518 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label21.c [2020-10-14 03:02:39,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd0ffaba4/161bdd5571734f4faca52f9d2bb47c2c/FLAGbab659b30 [2020-10-14 03:02:40,351 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:02:40,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label21.c [2020-10-14 03:02:40,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd0ffaba4/161bdd5571734f4faca52f9d2bb47c2c/FLAGbab659b30 [2020-10-14 03:02:40,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd0ffaba4/161bdd5571734f4faca52f9d2bb47c2c [2020-10-14 03:02:40,453 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:02:40,456 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:02:40,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:02:40,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:02:40,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:02:40,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:02:40" (1/1) ... [2020-10-14 03:02:40,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d15d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:02:40, skipping insertion in model container [2020-10-14 03:02:40,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:02:40" (1/1) ... [2020-10-14 03:02:40,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:02:40,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:02:42,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:02:42,361 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:02:42,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:02:43,020 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:02:43,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:02:43 WrapperNode [2020-10-14 03:02:43,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:02:43,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:02:43,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:02:43,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:02:43,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:02:43" (1/1) ... [2020-10-14 03:02:43,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:02:43" (1/1) ... [2020-10-14 03:02:43,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:02:43" (1/1) ... [2020-10-14 03:02:43,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:02:43" (1/1) ... [2020-10-14 03:02:43,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:02:43" (1/1) ... [2020-10-14 03:02:43,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:02:43" (1/1) ... [2020-10-14 03:02:43,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:02:43" (1/1) ... [2020-10-14 03:02:43,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:02:43,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:02:43,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:02:43,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:02:43,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:02:43" (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 [2020-10-14 03:02:43,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:02:43,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:02:43,433 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:02:43,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:02:43,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:02:43,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:02:43,434 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:02:43,435 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:02:43,435 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:02:43,435 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:02:43,436 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:02:43,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:02:43,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:02:43,436 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:02:43,436 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:02:43,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:02:43,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:02:54,831 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:02:54,831 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:02:54,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:02:54 BoogieIcfgContainer [2020-10-14 03:02:54,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:02:54,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:02:54,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:02:54,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:02:54,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:02:40" (1/3) ... [2020-10-14 03:02:54,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@612b34fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:02:54, skipping insertion in model container [2020-10-14 03:02:54,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:02:43" (2/3) ... [2020-10-14 03:02:54,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@612b34fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:02:54, skipping insertion in model container [2020-10-14 03:02:54,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:02:54" (3/3) ... [2020-10-14 03:02:54,852 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label21.c [2020-10-14 03:02:54,862 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:02:54,871 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:02:54,885 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:02:54,915 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:02:54,915 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:02:54,915 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:02:54,915 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:02:54,915 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:02:54,915 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:02:54,916 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:02:54,916 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:02:54,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:02:54,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 03:02:54,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:02:54,962 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] [2020-10-14 03:02:54,962 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:02:54,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:02:54,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1283196489, now seen corresponding path program 1 times [2020-10-14 03:02:54,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:02:54,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646346768] [2020-10-14 03:02:54,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:02:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:55,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:55,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:55,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 03:02:55,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:55,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-14 03:02:55,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:55,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:55,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:02:55,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:02:55,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 03:02:55,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:02:55,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:02:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:55,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:55,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:55,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:02:55,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:55,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 03:02:55,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:55,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:55,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:02:55,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:02:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:55,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:02:55,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646346768] [2020-10-14 03:02:55,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:02:55,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:02:55,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810955052] [2020-10-14 03:02:55,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:02:55,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:02:55,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:02:55,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:02:55,669 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 03:03:11,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:03:11,329 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-14 03:03:11,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:03:11,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-14 03:03:11,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:03:11,366 INFO L225 Difference]: With dead ends: 3152 [2020-10-14 03:03:11,367 INFO L226 Difference]: Without dead ends: 1954 [2020-10-14 03:03:11,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:03:11,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-14 03:03:11,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-14 03:03:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-14 03:03:11,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-14 03:03:11,547 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 26 [2020-10-14 03:03:11,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:03:11,548 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-14 03:03:11,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:03:11,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-14 03:03:11,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 03:03:11,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:03:11,553 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:03:11,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:03:11,554 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:03:11,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:03:11,555 INFO L82 PathProgramCache]: Analyzing trace with hash -568040722, now seen corresponding path program 1 times [2020-10-14 03:03:11,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:03:11,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84094564] [2020-10-14 03:03:11,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:03:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:11,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:12,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:12,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:12,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 03:03:12,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:03:12,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1286 [2020-10-14 03:03:12,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:12,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:12,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:03:12,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:03:12,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 03:03:12,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:03:12,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:03:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:12,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:12,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:12,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:03:12,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:12,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:03:12,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:12,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:12,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:03:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:03:12,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:12,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:03:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:13,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:13,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:13,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:03:13,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:13,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 03:03:13,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:13,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:13,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:03:13,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:13,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:03:13,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:03:13,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84094564] [2020-10-14 03:03:13,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:03:13,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:03:13,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115116812] [2020-10-14 03:03:13,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:03:13,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:03:13,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:03:13,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:03:13,139 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 5 states. [2020-10-14 03:03:30,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:03:30,458 INFO L93 Difference]: Finished difference Result 5468 states and 9074 transitions. [2020-10-14 03:03:30,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:03:30,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-14 03:03:30,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:03:30,484 INFO L225 Difference]: With dead ends: 5468 [2020-10-14 03:03:30,484 INFO L226 Difference]: Without dead ends: 3589 [2020-10-14 03:03:30,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:03:30,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-10-14 03:03:30,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 3564. [2020-10-14 03:03:30,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3564 states. [2020-10-14 03:03:30,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 5092 transitions. [2020-10-14 03:03:30,606 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 5092 transitions. Word has length 96 [2020-10-14 03:03:30,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:03:30,607 INFO L479 AbstractCegarLoop]: Abstraction has 3564 states and 5092 transitions. [2020-10-14 03:03:30,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:03:30,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 5092 transitions. [2020-10-14 03:03:30,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 03:03:30,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:03:30,615 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:03:30,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:03:30,616 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:03:30,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:03:30,617 INFO L82 PathProgramCache]: Analyzing trace with hash 203440535, now seen corresponding path program 1 times [2020-10-14 03:03:30,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:03:30,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238997477] [2020-10-14 03:03:30,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:03:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:30,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:31,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:31,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:31,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 03:03:31,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:03:31,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 983 [2020-10-14 03:03:31,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:31,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:31,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:03:31,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 03:03:31,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 03:03:31,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:31,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:03:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:31,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:31,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:31,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:03:31,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:31,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:03:31,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:31,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:31,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:03:31,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:31,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:03:31,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:31,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:03:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:31,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:31,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:31,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 03:03:31,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:31,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 03:03:31,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:31,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:03:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 03:03:31,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:03:31,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238997477] [2020-10-14 03:03:31,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:03:31,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:03:31,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214195989] [2020-10-14 03:03:31,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:03:31,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:03:31,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:03:31,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:03:31,979 INFO L87 Difference]: Start difference. First operand 3564 states and 5092 transitions. Second operand 6 states. [2020-10-14 03:03:48,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:03:48,914 INFO L93 Difference]: Finished difference Result 9594 states and 14086 transitions. [2020-10-14 03:03:48,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:03:48,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-14 03:03:48,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:03:48,949 INFO L225 Difference]: With dead ends: 9594 [2020-10-14 03:03:48,949 INFO L226 Difference]: Without dead ends: 6036 [2020-10-14 03:03:48,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:03:48,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6036 states. [2020-10-14 03:03:49,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6036 to 6027. [2020-10-14 03:03:49,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6027 states. [2020-10-14 03:03:49,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6027 states to 6027 states and 8490 transitions. [2020-10-14 03:03:49,126 INFO L78 Accepts]: Start accepts. Automaton has 6027 states and 8490 transitions. Word has length 99 [2020-10-14 03:03:49,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:03:49,128 INFO L479 AbstractCegarLoop]: Abstraction has 6027 states and 8490 transitions. [2020-10-14 03:03:49,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:03:49,133 INFO L276 IsEmpty]: Start isEmpty. Operand 6027 states and 8490 transitions. [2020-10-14 03:03:49,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 03:03:49,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:03:49,136 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:03:49,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:03:49,137 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:03:49,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:03:49,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1172180461, now seen corresponding path program 1 times [2020-10-14 03:03:49,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:03:49,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576090679] [2020-10-14 03:03:49,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:03:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:49,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:49,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:49,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:49,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 03:03:49,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:03:49,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-14 03:03:49,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:49,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:03:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:03:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 03:03:49,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:49,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:03:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:49,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:49,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:49,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:03:49,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:49,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:03:49,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:49,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:49,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:03:49,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:49,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:03:49,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:49,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:03:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:49,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:49,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:49,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:03:49,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:49,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 03:03:49,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:49,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:49,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:03:49,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:49,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:03:49,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:03:49,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576090679] [2020-10-14 03:03:49,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:03:49,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:03:49,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348708231] [2020-10-14 03:03:49,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:03:49,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:03:49,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:03:49,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:03:49,982 INFO L87 Difference]: Start difference. First operand 6027 states and 8490 transitions. Second operand 5 states. [2020-10-14 03:04:09,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:04:09,903 INFO L93 Difference]: Finished difference Result 15321 states and 22344 transitions. [2020-10-14 03:04:09,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:04:09,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-14 03:04:09,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:04:09,947 INFO L225 Difference]: With dead ends: 15321 [2020-10-14 03:04:09,947 INFO L226 Difference]: Without dead ends: 9300 [2020-10-14 03:04:09,961 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 [2020-10-14 03:04:09,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9300 states. [2020-10-14 03:04:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9300 to 9280. [2020-10-14 03:04:10,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9280 states. [2020-10-14 03:04:10,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9280 states to 9280 states and 13464 transitions. [2020-10-14 03:04:10,180 INFO L78 Accepts]: Start accepts. Automaton has 9280 states and 13464 transitions. Word has length 101 [2020-10-14 03:04:10,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:04:10,182 INFO L479 AbstractCegarLoop]: Abstraction has 9280 states and 13464 transitions. [2020-10-14 03:04:10,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:04:10,182 INFO L276 IsEmpty]: Start isEmpty. Operand 9280 states and 13464 transitions. [2020-10-14 03:04:10,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 03:04:10,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:04:10,190 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:04:10,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:04:10,190 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:04:10,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:04:10,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1197957899, now seen corresponding path program 1 times [2020-10-14 03:04:10,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:04:10,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042761409] [2020-10-14 03:04:10,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:04:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:10,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:10,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:10,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:10,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 03:04:10,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:04:10,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-10-14 03:04:10,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:10,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:10,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:04:10,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 03:04:10,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 03:04:10,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:10,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:04:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:10,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:10,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:10,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:04:10,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:04:10,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:10,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:10,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:04:10,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:10,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:04:10,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:10,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:04:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:10,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:11,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:11,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:04:11,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:11,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 03:04:11,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:11,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:04:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:04:11,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:04:11,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042761409] [2020-10-14 03:04:11,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:04:11,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:04:11,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213084319] [2020-10-14 03:04:11,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:04:11,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:04:11,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:04:11,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:04:11,082 INFO L87 Difference]: Start difference. First operand 9280 states and 13464 transitions. Second operand 5 states. [2020-10-14 03:04:34,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:04:34,519 INFO L93 Difference]: Finished difference Result 19431 states and 29482 transitions. [2020-10-14 03:04:34,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:04:34,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-14 03:04:34,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:04:34,582 INFO L225 Difference]: With dead ends: 19431 [2020-10-14 03:04:34,582 INFO L226 Difference]: Without dead ends: 14217 [2020-10-14 03:04:34,595 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 [2020-10-14 03:04:34,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14217 states. [2020-10-14 03:04:34,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14217 to 14154. [2020-10-14 03:04:34,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14154 states. [2020-10-14 03:04:34,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14154 states to 14154 states and 19961 transitions. [2020-10-14 03:04:34,911 INFO L78 Accepts]: Start accepts. Automaton has 14154 states and 19961 transitions. Word has length 105 [2020-10-14 03:04:34,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:04:34,912 INFO L479 AbstractCegarLoop]: Abstraction has 14154 states and 19961 transitions. [2020-10-14 03:04:34,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:04:34,913 INFO L276 IsEmpty]: Start isEmpty. Operand 14154 states and 19961 transitions. [2020-10-14 03:04:34,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 03:04:34,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:04:34,915 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:04:34,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:04:34,916 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:04:34,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:04:34,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1618521953, now seen corresponding path program 1 times [2020-10-14 03:04:34,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:04:34,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618249918] [2020-10-14 03:04:34,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:04:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:34,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:35,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:35,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:35,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 03:04:35,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:04:35,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 841 [2020-10-14 03:04:35,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:35,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:35,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:04:35,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 03:04:35,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 03:04:35,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:35,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:04:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:35,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:35,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:35,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:04:35,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:35,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 03:04:35,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:35,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:04:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:35,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:04:35,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:04:35,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:04:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:35,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:36,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:36,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 03:04:36,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:36,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 03:04:36,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:36,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:04:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 03:04:36,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:04:36,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618249918] [2020-10-14 03:04:36,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:04:36,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:04:36,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2647015] [2020-10-14 03:04:36,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:04:36,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:04:36,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:04:36,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:04:36,116 INFO L87 Difference]: Start difference. First operand 14154 states and 19961 transitions. Second operand 5 states. [2020-10-14 03:05:01,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:05:01,181 INFO L93 Difference]: Finished difference Result 29200 states and 42852 transitions. [2020-10-14 03:05:01,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:05:01,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-14 03:05:01,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:05:01,253 INFO L225 Difference]: With dead ends: 29200 [2020-10-14 03:05:01,253 INFO L226 Difference]: Without dead ends: 19108 [2020-10-14 03:05:01,279 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 [2020-10-14 03:05:01,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19108 states. [2020-10-14 03:05:01,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19108 to 19054. [2020-10-14 03:05:01,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19054 states. [2020-10-14 03:05:02,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19054 states to 19054 states and 26772 transitions. [2020-10-14 03:05:02,782 INFO L78 Accepts]: Start accepts. Automaton has 19054 states and 26772 transitions. Word has length 127 [2020-10-14 03:05:02,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:05:02,783 INFO L479 AbstractCegarLoop]: Abstraction has 19054 states and 26772 transitions. [2020-10-14 03:05:02,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:05:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand 19054 states and 26772 transitions. [2020-10-14 03:05:02,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 03:05:02,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:05:02,790 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:05:02,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:05:02,791 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:05:02,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:05:02,792 INFO L82 PathProgramCache]: Analyzing trace with hash 738668522, now seen corresponding path program 1 times [2020-10-14 03:05:02,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:05:02,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013385522] [2020-10-14 03:05:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:05:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:02,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:02,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:03,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:05,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:05,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 03:05:05,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:05:05,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2681 [2020-10-14 03:05:05,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:05,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:05,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:05:05,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 03:05:05,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:05:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:05,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:05:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:05,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:05,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:05,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:05:05,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:05,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:05:05,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:05,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:05,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:05:05,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:05,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:05:05,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:05,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:05:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:05,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:05,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:05,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 03:05:05,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:05,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 03:05:05,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:05,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:05,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:05:05,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:05,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 03:05:05,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:05,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 03:05:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:05,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:05,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:05,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:05:05,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:05,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 03:05:05,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:05,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:05,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:05:05,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:05:05,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 03:05:05,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:05,957 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:05:05,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013385522] [2020-10-14 03:05:05,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:05:05,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:05:05,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119774889] [2020-10-14 03:05:05,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:05:05,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:05:05,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:05:05,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:05:05,961 INFO L87 Difference]: Start difference. First operand 19054 states and 26772 transitions. Second operand 7 states. [2020-10-14 03:05:33,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:05:33,806 INFO L93 Difference]: Finished difference Result 54224 states and 80211 transitions. [2020-10-14 03:05:33,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:05:33,809 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-10-14 03:05:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:05:33,928 INFO L225 Difference]: With dead ends: 54224 [2020-10-14 03:05:33,928 INFO L226 Difference]: Without dead ends: 35979 [2020-10-14 03:05:33,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:05:34,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35979 states. [2020-10-14 03:05:34,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35979 to 35857. [2020-10-14 03:05:34,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35857 states. [2020-10-14 03:05:34,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35857 states to 35857 states and 49607 transitions. [2020-10-14 03:05:34,900 INFO L78 Accepts]: Start accepts. Automaton has 35857 states and 49607 transitions. Word has length 171 [2020-10-14 03:05:34,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:05:34,900 INFO L479 AbstractCegarLoop]: Abstraction has 35857 states and 49607 transitions. [2020-10-14 03:05:34,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:05:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand 35857 states and 49607 transitions. [2020-10-14 03:05:34,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 03:05:34,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:05:34,905 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:05:34,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:05:34,905 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:05:34,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:05:34,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1022368901, now seen corresponding path program 1 times [2020-10-14 03:05:34,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:05:34,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528592752] [2020-10-14 03:05:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:05:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:34,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:35,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:35,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:35,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 03:05:35,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:05:35,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 993 [2020-10-14 03:05:35,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:35,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:35,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:05:35,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 03:05:35,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 03:05:35,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:05:36,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:05:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:36,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:36,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:36,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:05:36,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:36,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:05:36,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:36,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:36,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:05:36,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:36,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:05:36,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:05:36,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:05:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:36,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:36,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:36,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 03:05:36,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:36,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 03:05:36,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:36,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:05:36,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:36,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 03:05:36,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:36,368 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:05:36,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528592752] [2020-10-14 03:05:36,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:05:36,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:05:36,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652158872] [2020-10-14 03:05:36,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:05:36,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:05:36,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:05:36,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:05:36,371 INFO L87 Difference]: Start difference. First operand 35857 states and 49607 transitions. Second operand 5 states. [2020-10-14 03:06:01,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:06:01,016 INFO L93 Difference]: Finished difference Result 82952 states and 118065 transitions. [2020-10-14 03:06:01,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:06:01,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-14 03:06:01,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:06:01,172 INFO L225 Difference]: With dead ends: 82952 [2020-10-14 03:06:01,172 INFO L226 Difference]: Without dead ends: 47904 [2020-10-14 03:06:01,251 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 [2020-10-14 03:06:01,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47904 states. [2020-10-14 03:06:02,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47904 to 47902. [2020-10-14 03:06:02,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47902 states. [2020-10-14 03:06:02,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47902 states to 47902 states and 64843 transitions. [2020-10-14 03:06:02,482 INFO L78 Accepts]: Start accepts. Automaton has 47902 states and 64843 transitions. Word has length 172 [2020-10-14 03:06:02,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:06:02,482 INFO L479 AbstractCegarLoop]: Abstraction has 47902 states and 64843 transitions. [2020-10-14 03:06:02,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:06:02,483 INFO L276 IsEmpty]: Start isEmpty. Operand 47902 states and 64843 transitions. [2020-10-14 03:06:02,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 03:06:02,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:06:02,489 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-14 03:06:02,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:06:02,490 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:06:02,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:06:02,490 INFO L82 PathProgramCache]: Analyzing trace with hash 234199782, now seen corresponding path program 1 times [2020-10-14 03:06:02,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:06:02,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609184039] [2020-10-14 03:06:02,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:06:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:02,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:02,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:03,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:03,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:03,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 03:06:03,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:06:03,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-10-14 03:06:03,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:03,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:03,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:06:03,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 03:06:03,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 03:06:03,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:06:03,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:06:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:03,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:03,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:03,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:06:03,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:03,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:06:03,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:03,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:06:03,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:03,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:06:03,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:06:03,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:06:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:03,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:03,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:03,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 03:06:03,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:03,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 03:06:03,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:03,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:03,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:06:03,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:03,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 03:06:03,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:03,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 03:06:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:03,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:03,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:03,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:06:03,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:03,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 03:06:03,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:03,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:03,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:06:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:06:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 03:06:03,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:04,153 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:06:04,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609184039] [2020-10-14 03:06:04,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:06:04,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:06:04,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603125587] [2020-10-14 03:06:04,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:06:04,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:06:04,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:06:04,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:06:04,169 INFO L87 Difference]: Start difference. First operand 47902 states and 64843 transitions. Second operand 8 states. [2020-10-14 03:06:06,442 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 37