/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/Problem12_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:45:38,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:45:38,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:45:38,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:45:38,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:45:38,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:45:38,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:45:38,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:45:38,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:45:38,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:45:38,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:45:38,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:45:38,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:45:38,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:45:38,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:45:38,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:45:38,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:45:38,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:45:38,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:45:38,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:45:38,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:45:38,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:45:38,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:45:38,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:45:38,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:45:38,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:45:38,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:45:38,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:45:38,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:45:38,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:45:38,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:45:38,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:45:38,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:45:38,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:45:38,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:45:38,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:45:38,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:45:38,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:45:38,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:45:38,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:45:38,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:45:38,615 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 02:45:38,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:45:38,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:45:38,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:45:38,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:45:38,665 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:45:38,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:45:38,666 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:45:38,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:45:38,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:45:38,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:45:38,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:45:38,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:45:38,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:45:38,669 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:45:38,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:45:38,669 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:45:38,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:45:38,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:45:38,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:45:38,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:45:38,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:45:38,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:45:38,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:45:38,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:45:38,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:45:38,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:45:38,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:45:38,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:45:38,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:45:38,673 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 02:45:38,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:45:39,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:45:39,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:45:39,015 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:45:39,016 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:45:39,017 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16.c [2020-10-14 02:45:39,081 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/519676abb/50ab36b2061c43f8a5132c0defcda68e/FLAG873a7018a [2020-10-14 02:45:39,927 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:45:39,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label16.c [2020-10-14 02:45:39,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/519676abb/50ab36b2061c43f8a5132c0defcda68e/FLAG873a7018a [2020-10-14 02:45:40,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/519676abb/50ab36b2061c43f8a5132c0defcda68e [2020-10-14 02:45:40,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:45:40,041 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:45:40,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:45:40,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:45:40,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:45:40,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:45:40" (1/1) ... [2020-10-14 02:45:40,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424d9305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:40, skipping insertion in model container [2020-10-14 02:45:40,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:45:40" (1/1) ... [2020-10-14 02:45:40,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:45:40,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:45:42,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:45:42,185 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:45:42,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:45:42,935 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:45:42,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:42 WrapperNode [2020-10-14 02:45:42,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:45:42,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:45:42,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:45:42,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:45:42,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:42" (1/1) ... [2020-10-14 02:45:42,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:42" (1/1) ... [2020-10-14 02:45:43,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:42" (1/1) ... [2020-10-14 02:45:43,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:42" (1/1) ... [2020-10-14 02:45:43,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:42" (1/1) ... [2020-10-14 02:45:43,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:42" (1/1) ... [2020-10-14 02:45:43,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:42" (1/1) ... [2020-10-14 02:45:43,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:45:43,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:45:43,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:45:43,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:45:43,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:42" (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 02:45:43,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:45:43,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:45:43,354 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:45:43,354 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:45:43,354 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:45:43,354 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:45:43,354 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:45:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:45:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:45:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:45:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:45:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:45:43,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:45:43,356 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:45:43,356 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:45:43,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:45:43,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:45:49,395 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:45:49,396 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:45:49,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:45:49 BoogieIcfgContainer [2020-10-14 02:45:49,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:45:49,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:45:49,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:45:49,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:45:49,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:45:40" (1/3) ... [2020-10-14 02:45:49,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a93e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:45:49, skipping insertion in model container [2020-10-14 02:45:49,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:45:42" (2/3) ... [2020-10-14 02:45:49,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a93e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:45:49, skipping insertion in model container [2020-10-14 02:45:49,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:45:49" (3/3) ... [2020-10-14 02:45:49,431 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label16.c [2020-10-14 02:45:49,444 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:45:49,458 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:45:49,477 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:45:49,518 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:45:49,518 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:45:49,518 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:45:49,519 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:45:49,519 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:45:49,519 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:45:49,519 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:45:49,519 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:45:49,569 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:45:49,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 02:45:49,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:45:49,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:45:49,587 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:45:49,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:45:49,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1315979506, now seen corresponding path program 1 times [2020-10-14 02:45:49,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:45:49,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903412129] [2020-10-14 02:45:49,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:45:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:49,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:50,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:50,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 02:45:50,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:50,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-14 02:45:50,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:50,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:50,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:45:50,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:45:50,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:45:50,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 02:45:50,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:45:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:50,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:50,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:50,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:45:50,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:50,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 02:45:50,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:50,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:50,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:45:50,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:50,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:45:50,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:50,516 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 02:45:50,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903412129] [2020-10-14 02:45:50,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:45:50,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 02:45:50,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834611060] [2020-10-14 02:45:50,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:45:50,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:45:50,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:45:50,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:45:50,551 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-14 02:46:03,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:03,545 INFO L93 Difference]: Finished difference Result 3253 states and 6293 transitions. [2020-10-14 02:46:03,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:46:03,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-14 02:46:03,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:46:03,613 INFO L225 Difference]: With dead ends: 3253 [2020-10-14 02:46:03,613 INFO L226 Difference]: Without dead ends: 2346 [2020-10-14 02:46:03,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:46:03,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2020-10-14 02:46:03,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2020-10-14 02:46:03,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2020-10-14 02:46:03,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3834 transitions. [2020-10-14 02:46:03,832 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3834 transitions. Word has length 71 [2020-10-14 02:46:03,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:46:03,833 INFO L479 AbstractCegarLoop]: Abstraction has 2331 states and 3834 transitions. [2020-10-14 02:46:03,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:46:03,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3834 transitions. [2020-10-14 02:46:03,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 02:46:03,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:03,842 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:46:03,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:46:03,843 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:03,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:03,843 INFO L82 PathProgramCache]: Analyzing trace with hash -159355990, now seen corresponding path program 1 times [2020-10-14 02:46:03,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:03,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147110753] [2020-10-14 02:46:03,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:03,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:04,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:05,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:05,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:05,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 02:46:05,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:46:05,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1400 [2020-10-14 02:46:05,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:05,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:46:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:46:05,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-14 02:46:05,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:05,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:05,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:05,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:05,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:05,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:46:05,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:05,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:05,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:05,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:05,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:05,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:05,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:46:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:05,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:05,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:05,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 02:46:05,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:05,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 02:46:05,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:05,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:46:05,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:46:05,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2147110753] [2020-10-14 02:46:05,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:46:05,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:46:05,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490664386] [2020-10-14 02:46:05,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:46:05,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:05,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:46:05,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:46:05,620 INFO L87 Difference]: Start difference. First operand 2331 states and 3834 transitions. Second operand 6 states. [2020-10-14 02:46:15,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:15,243 INFO L93 Difference]: Finished difference Result 7012 states and 11662 transitions. [2020-10-14 02:46:15,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:46:15,244 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2020-10-14 02:46:15,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:46:15,272 INFO L225 Difference]: With dead ends: 7012 [2020-10-14 02:46:15,272 INFO L226 Difference]: Without dead ends: 4687 [2020-10-14 02:46:15,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:46:15,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4687 states. [2020-10-14 02:46:15,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4687 to 4672. [2020-10-14 02:46:15,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4672 states. [2020-10-14 02:46:15,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4672 states to 4672 states and 7627 transitions. [2020-10-14 02:46:15,405 INFO L78 Accepts]: Start accepts. Automaton has 4672 states and 7627 transitions. Word has length 149 [2020-10-14 02:46:15,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:46:15,406 INFO L479 AbstractCegarLoop]: Abstraction has 4672 states and 7627 transitions. [2020-10-14 02:46:15,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:46:15,406 INFO L276 IsEmpty]: Start isEmpty. Operand 4672 states and 7627 transitions. [2020-10-14 02:46:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 02:46:15,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:15,412 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:46:15,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:46:15,413 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:15,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:15,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1488141347, now seen corresponding path program 1 times [2020-10-14 02:46:15,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:15,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061551316] [2020-10-14 02:46:15,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:15,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:15,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:16,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:16,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 02:46:16,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:46:16,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 884 [2020-10-14 02:46:16,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:16,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 02:46:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:46:16,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:16,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:16,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:16,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:16,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:16,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:16,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:46:16,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:16,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:16,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:16,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:16,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:16,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:46:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:16,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:16,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:16,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 02:46:16,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:16,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 02:46:16,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:16,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:46:16,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:46:16,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061551316] [2020-10-14 02:46:16,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:46:16,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:46:16,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296923181] [2020-10-14 02:46:16,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:46:16,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:16,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:46:16,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:46:16,681 INFO L87 Difference]: Start difference. First operand 4672 states and 7627 transitions. Second operand 5 states. [2020-10-14 02:46:27,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:27,748 INFO L93 Difference]: Finished difference Result 14009 states and 23232 transitions. [2020-10-14 02:46:27,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:46:27,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-14 02:46:27,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:46:27,800 INFO L225 Difference]: With dead ends: 14009 [2020-10-14 02:46:27,800 INFO L226 Difference]: Without dead ends: 9343 [2020-10-14 02:46:27,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 02:46:27,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9343 states. [2020-10-14 02:46:28,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9343 to 9339. [2020-10-14 02:46:28,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9339 states. [2020-10-14 02:46:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9339 states to 9339 states and 13420 transitions. [2020-10-14 02:46:28,136 INFO L78 Accepts]: Start accepts. Automaton has 9339 states and 13420 transitions. Word has length 174 [2020-10-14 02:46:28,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:46:28,143 INFO L479 AbstractCegarLoop]: Abstraction has 9339 states and 13420 transitions. [2020-10-14 02:46:28,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:46:28,144 INFO L276 IsEmpty]: Start isEmpty. Operand 9339 states and 13420 transitions. [2020-10-14 02:46:28,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 02:46:28,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:28,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:46:28,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:46:28,152 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:28,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:28,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1717971578, now seen corresponding path program 1 times [2020-10-14 02:46:28,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:28,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970113698] [2020-10-14 02:46:28,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:28,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:28,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:29,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:29,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:29,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 02:46:29,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:46:29,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1270 [2020-10-14 02:46:29,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:29,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:29,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:29,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-14 02:46:29,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:46:29,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:29,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:29,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:29,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:29,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:29,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:29,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:46:29,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:29,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:29,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:29,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:29,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:29,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:29,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:46:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:29,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:29,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:29,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 02:46:29,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:29,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 02:46:29,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:29,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:29,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:29,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:29,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:46:29,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:29,874 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:46:29,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970113698] [2020-10-14 02:46:29,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:46:29,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:46:29,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053800560] [2020-10-14 02:46:29,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:46:29,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:29,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:46:29,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:46:29,888 INFO L87 Difference]: Start difference. First operand 9339 states and 13420 transitions. Second operand 5 states. [2020-10-14 02:46:42,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:42,444 INFO L93 Difference]: Finished difference Result 26420 states and 38894 transitions. [2020-10-14 02:46:42,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:46:42,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-14 02:46:42,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:46:42,526 INFO L225 Difference]: With dead ends: 26420 [2020-10-14 02:46:42,527 INFO L226 Difference]: Without dead ends: 17087 [2020-10-14 02:46:42,547 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 02:46:42,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17087 states. [2020-10-14 02:46:42,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17087 to 17083. [2020-10-14 02:46:42,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17083 states. [2020-10-14 02:46:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17083 states to 17083 states and 22794 transitions. [2020-10-14 02:46:42,933 INFO L78 Accepts]: Start accepts. Automaton has 17083 states and 22794 transitions. Word has length 189 [2020-10-14 02:46:42,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:46:42,934 INFO L479 AbstractCegarLoop]: Abstraction has 17083 states and 22794 transitions. [2020-10-14 02:46:42,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:46:42,934 INFO L276 IsEmpty]: Start isEmpty. Operand 17083 states and 22794 transitions. [2020-10-14 02:46:42,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-14 02:46:42,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:42,942 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:46:42,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:46:42,943 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:42,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:42,943 INFO L82 PathProgramCache]: Analyzing trace with hash -25610105, now seen corresponding path program 1 times [2020-10-14 02:46:42,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:42,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255192936] [2020-10-14 02:46:42,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:43,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:43,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:43,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:44,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:44,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:44,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 02:46:44,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:46:44,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1970 [2020-10-14 02:46:44,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:44,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:46:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 02:46:44,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:45,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:45,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:45,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:45,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:45,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:45,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:46:45,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:45,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:45,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:45,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:45,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:45,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:45,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:46:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:45,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:45,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:45,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:46:45,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:45,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 02:46:45,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:45,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:46:45,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:45,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 02:46:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:45,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:45,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:45,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 02:46:45,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:45,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 02:46:45,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:45,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:45,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:45,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:46:45,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 02:46:45,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:45,431 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:46:45,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255192936] [2020-10-14 02:46:45,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:46:45,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:46:45,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340755734] [2020-10-14 02:46:45,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:46:45,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:45,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:46:45,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:46:45,439 INFO L87 Difference]: Start difference. First operand 17083 states and 22794 transitions. Second operand 7 states. [2020-10-14 02:47:00,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:47:00,281 INFO L93 Difference]: Finished difference Result 47601 states and 66482 transitions. [2020-10-14 02:47:00,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:47:00,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-10-14 02:47:00,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:47:00,441 INFO L225 Difference]: With dead ends: 47601 [2020-10-14 02:47:00,442 INFO L226 Difference]: Without dead ends: 30524 [2020-10-14 02:47:00,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:47:00,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30524 states. [2020-10-14 02:47:01,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30524 to 29697. [2020-10-14 02:47:01,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29697 states. [2020-10-14 02:47:01,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29697 states to 29697 states and 39492 transitions. [2020-10-14 02:47:01,307 INFO L78 Accepts]: Start accepts. Automaton has 29697 states and 39492 transitions. Word has length 226 [2020-10-14 02:47:01,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:47:01,307 INFO L479 AbstractCegarLoop]: Abstraction has 29697 states and 39492 transitions. [2020-10-14 02:47:01,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:47:01,308 INFO L276 IsEmpty]: Start isEmpty. Operand 29697 states and 39492 transitions. [2020-10-14 02:47:01,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-14 02:47:01,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:47:01,320 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:47:01,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:47:01,321 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:47:01,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:47:01,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1304990686, now seen corresponding path program 1 times [2020-10-14 02:47:01,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:47:01,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029597639] [2020-10-14 02:47:01,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:47:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:02,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:02,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:03,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:03,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:03,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 02:47:03,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:47:03,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2482 [2020-10-14 02:47:03,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:03,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:03,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:03,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-14 02:47:03,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:47:03,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:04,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:47:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:04,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:04,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:04,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:47:04,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:04,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:47:04,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:04,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:04,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:47:04,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:04,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:47:04,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:04,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:47:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:04,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:04,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:04,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 02:47:04,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:04,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 02:47:04,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:04,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:04,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:47:04,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:04,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-14 02:47:04,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:04,378 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:47:04,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029597639] [2020-10-14 02:47:04,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:47:04,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:47:04,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538188265] [2020-10-14 02:47:04,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:47:04,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:47:04,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:47:04,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:47:04,383 INFO L87 Difference]: Start difference. First operand 29697 states and 39492 transitions. Second operand 5 states. [2020-10-14 02:47:16,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:47:16,547 INFO L93 Difference]: Finished difference Result 65623 states and 88214 transitions. [2020-10-14 02:47:16,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:47:16,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-14 02:47:16,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:47:16,676 INFO L225 Difference]: With dead ends: 65623 [2020-10-14 02:47:16,676 INFO L226 Difference]: Without dead ends: 35932 [2020-10-14 02:47:16,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 02:47:16,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35932 states. [2020-10-14 02:47:17,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35932 to 34394. [2020-10-14 02:47:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34394 states. [2020-10-14 02:47:17,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34394 states to 34394 states and 45292 transitions. [2020-10-14 02:47:17,401 INFO L78 Accepts]: Start accepts. Automaton has 34394 states and 45292 transitions. Word has length 241 [2020-10-14 02:47:17,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:47:17,402 INFO L479 AbstractCegarLoop]: Abstraction has 34394 states and 45292 transitions. [2020-10-14 02:47:17,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:47:17,402 INFO L276 IsEmpty]: Start isEmpty. Operand 34394 states and 45292 transitions. [2020-10-14 02:47:17,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-14 02:47:17,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:47:17,415 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:47:17,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:47:17,415 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:47:17,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:47:17,416 INFO L82 PathProgramCache]: Analyzing trace with hash 320809715, now seen corresponding path program 1 times [2020-10-14 02:47:17,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:47:17,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458820026] [2020-10-14 02:47:17,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:47:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:17,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:17,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:18,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:19,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:22,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:22,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-14 02:47:22,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:47:22,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 02:47:22,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:22,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 02:47:22,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 02:47:22,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:22,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:47:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:22,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:22,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:22,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:47:22,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:22,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:47:22,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:22,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:47:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:47:22,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:22,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:47:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:22,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:22,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:22,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 02:47:22,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:22,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 02:47:22,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:22,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:47:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 02:47:22,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:22,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-14 02:47:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:22,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:22,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:22,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 02:47:22,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:22,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 02:47:22,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:22,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:22,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:22,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:47:22,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 02:47:22,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:22,997 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:47:22,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458820026] [2020-10-14 02:47:22,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:47:22,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:47:22,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568898378] [2020-10-14 02:47:22,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:47:22,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:47:22,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:47:23,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:47:23,000 INFO L87 Difference]: Start difference. First operand 34394 states and 45292 transitions. Second operand 7 states. [2020-10-14 02:47:43,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:47:43,520 INFO L93 Difference]: Finished difference Result 82057 states and 120057 transitions. [2020-10-14 02:47:43,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:47:43,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 264 [2020-10-14 02:47:43,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:47:43,702 INFO L225 Difference]: With dead ends: 82057 [2020-10-14 02:47:43,702 INFO L226 Difference]: Without dead ends: 42127 [2020-10-14 02:47:43,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:47:43,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42127 states. [2020-10-14 02:47:44,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42127 to 38560. [2020-10-14 02:47:44,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38560 states. [2020-10-14 02:47:44,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38560 states to 38560 states and 48029 transitions. [2020-10-14 02:47:44,683 INFO L78 Accepts]: Start accepts. Automaton has 38560 states and 48029 transitions. Word has length 264 [2020-10-14 02:47:44,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:47:44,683 INFO L479 AbstractCegarLoop]: Abstraction has 38560 states and 48029 transitions. [2020-10-14 02:47:44,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:47:44,684 INFO L276 IsEmpty]: Start isEmpty. Operand 38560 states and 48029 transitions. [2020-10-14 02:47:44,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-14 02:47:44,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:47:44,696 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:47:44,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:47:44,696 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:47:44,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:47:44,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1985598427, now seen corresponding path program 1 times [2020-10-14 02:47:44,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:47:44,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135064209] [2020-10-14 02:47:44,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:47:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:44,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:44,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:45,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:47,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:47,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-14 02:47:47,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:47:47,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3130 [2020-10-14 02:47:47,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:47,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:47,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-10-14 02:47:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:47:47,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:47,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:47:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:47,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:47,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:47,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:47:47,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:47,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:47:47,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:47,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:47:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:47:47,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:48,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:47:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:48,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:48,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:48,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 02:47:48,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:48,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 02:47:48,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:48,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:47:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:47:48,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:48,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 02:47:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:48,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:48,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:48,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 02:47:48,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:48,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 02:47:48,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:48,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:47:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 02:47:48,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 02:47:48,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135064209] [2020-10-14 02:47:48,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:47:48,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:47:48,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922033960] [2020-10-14 02:47:48,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:47:48,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:47:48,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:47:48,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:47:48,311 INFO L87 Difference]: Start difference. First operand 38560 states and 48029 transitions. Second operand 5 states. [2020-10-14 02:48:03,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:48:03,219 INFO L93 Difference]: Finished difference Result 98993 states and 126911 transitions. [2020-10-14 02:48:03,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:48:03,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2020-10-14 02:48:03,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:48:03,432 INFO L225 Difference]: With dead ends: 98993 [2020-10-14 02:48:03,432 INFO L226 Difference]: Without dead ends: 61199 [2020-10-14 02:48:03,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 02:48:03,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61199 states. [2020-10-14 02:48:04,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61199 to 61193. [2020-10-14 02:48:04,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61193 states. [2020-10-14 02:48:04,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61193 states to 61193 states and 76539 transitions. [2020-10-14 02:48:04,873 INFO L78 Accepts]: Start accepts. Automaton has 61193 states and 76539 transitions. Word has length 284 [2020-10-14 02:48:04,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:48:04,874 INFO L479 AbstractCegarLoop]: Abstraction has 61193 states and 76539 transitions. [2020-10-14 02:48:04,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:48:04,875 INFO L276 IsEmpty]: Start isEmpty. Operand 61193 states and 76539 transitions. [2020-10-14 02:48:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-14 02:48:04,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:48:04,893 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:48:04,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:48:04,894 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:48:04,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:48:04,894 INFO L82 PathProgramCache]: Analyzing trace with hash 917680494, now seen corresponding path program 1 times [2020-10-14 02:48:04,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:48:04,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816954223] [2020-10-14 02:48:04,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:48:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:04,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:05,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:06,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:09,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:09,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-14 02:48:09,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:48:09,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 02:48:09,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:09,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:09,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:48:09,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 02:48:09,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 02:48:09,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:10,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:48:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:10,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:10,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:10,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:48:10,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:10,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:48:10,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:10,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:10,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:48:10,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:10,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:48:10,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:10,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:48:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:10,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:10,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:10,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 02:48:10,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:10,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 02:48:10,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:10,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:10,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:48:10,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:10,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 02:48:10,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:48:10,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 02:48:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:10,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:10,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:10,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 02:48:10,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-14 02:48:10,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:10,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:10,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:48:10,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:48:10,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 02:48:10,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:48:11,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816954223] [2020-10-14 02:48:11,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:48:11,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:48:11,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418620992] [2020-10-14 02:48:11,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:48:11,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:48:11,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:48:11,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:48:11,102 INFO L87 Difference]: Start difference. First operand 61193 states and 76539 transitions. Second operand 7 states. [2020-10-14 02:48:34,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:48:34,463 INFO L93 Difference]: Finished difference Result 123209 states and 160201 transitions. [2020-10-14 02:48:34,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:48:34,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2020-10-14 02:48:34,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:48:34,755 INFO L225 Difference]: With dead ends: 123209 [2020-10-14 02:48:34,756 INFO L226 Difference]: Without dead ends: 62782 [2020-10-14 02:48:34,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:48:34,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62782 states. [2020-10-14 02:48:36,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62782 to 60839. [2020-10-14 02:48:36,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60839 states. [2020-10-14 02:48:36,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60839 states to 60839 states and 74456 transitions. [2020-10-14 02:48:36,151 INFO L78 Accepts]: Start accepts. Automaton has 60839 states and 74456 transitions. Word has length 313 [2020-10-14 02:48:36,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:48:36,152 INFO L479 AbstractCegarLoop]: Abstraction has 60839 states and 74456 transitions. [2020-10-14 02:48:36,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:48:36,152 INFO L276 IsEmpty]: Start isEmpty. Operand 60839 states and 74456 transitions. [2020-10-14 02:48:36,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-14 02:48:36,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:48:36,170 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:48:36,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:48:36,171 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:48:36,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:48:36,171 INFO L82 PathProgramCache]: Analyzing trace with hash 51141647, now seen corresponding path program 1 times [2020-10-14 02:48:36,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:48:36,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353263959] [2020-10-14 02:48:36,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:48:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:36,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:36,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:37,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:40,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:40,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-14 02:48:40,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:48:40,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4299 [2020-10-14 02:48:40,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:40,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:40,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:48:40,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 02:48:40,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 02:48:40,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:40,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:48:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:40,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:40,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:40,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:48:40,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:40,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:48:40,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:40,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:48:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:48:40,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:40,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:48:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:40,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:40,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:40,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 02:48:40,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:40,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 02:48:40,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:40,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:48:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:48:40,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:40,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 02:48:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:40,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:41,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:41,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 02:48:41,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:41,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-14 02:48:41,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:41,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:48:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:48:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 02:48:41,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:41,380 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 228 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:48:41,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353263959] [2020-10-14 02:48:41,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:48:41,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:48:41,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425114084] [2020-10-14 02:48:41,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:48:41,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:48:41,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:48:41,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:48:41,382 INFO L87 Difference]: Start difference. First operand 60839 states and 74456 transitions. Second operand 7 states. [2020-10-14 02:49:08,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:49:08,310 INFO L93 Difference]: Finished difference Result 136790 states and 171015 transitions. [2020-10-14 02:49:08,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:49:08,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 326 [2020-10-14 02:49:08,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:49:08,678 INFO L225 Difference]: With dead ends: 136790 [2020-10-14 02:49:08,679 INFO L226 Difference]: Without dead ends: 76722 [2020-10-14 02:49:08,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:49:08,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76722 states. [2020-10-14 02:49:10,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76722 to 75916. [2020-10-14 02:49:10,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75916 states. [2020-10-14 02:49:10,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75916 states to 75916 states and 89918 transitions. [2020-10-14 02:49:10,279 INFO L78 Accepts]: Start accepts. Automaton has 75916 states and 89918 transitions. Word has length 326 [2020-10-14 02:49:10,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:49:10,280 INFO L479 AbstractCegarLoop]: Abstraction has 75916 states and 89918 transitions. [2020-10-14 02:49:10,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:49:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 75916 states and 89918 transitions. [2020-10-14 02:49:10,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-14 02:49:10,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:49:10,299 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:49:10,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:49:10,300 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:49:10,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:49:10,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1939274230, now seen corresponding path program 1 times [2020-10-14 02:49:10,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:49:10,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235619169] [2020-10-14 02:49:10,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:49:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:10,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:10,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:11,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:13,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:14,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:14,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-14 02:49:14,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:49:14,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3948 [2020-10-14 02:49:14,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:14,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:49:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-14 02:49:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 02:49:14,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:49:14,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:49:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:14,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:14,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:14,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:49:14,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:14,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:49:14,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:14,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:14,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:49:14,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:14,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:49:14,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:49:14,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:49:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:14,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:14,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:14,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 02:49:14,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:14,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 02:49:14,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:14,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:14,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:49:14,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:14,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-14 02:49:14,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:49:14,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-14 02:49:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:14,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:14,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:14,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 02:49:14,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:14,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 02:49:14,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:14,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:14,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:49:14,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:49:14,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 02:49:14,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:49:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:49:14,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235619169] [2020-10-14 02:49:14,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:49:14,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:49:14,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68329815] [2020-10-14 02:49:14,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:49:14,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:49:14,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:49:14,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:49:14,800 INFO L87 Difference]: Start difference. First operand 75916 states and 89918 transitions. Second operand 7 states.