/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:09:15,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:09:15,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:09:15,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:09:15,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:09:15,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:09:15,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:09:15,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:09:15,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:09:15,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:09:15,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:09:15,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:09:15,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:09:15,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:09:15,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:09:15,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:09:15,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:09:15,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:09:15,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:09:15,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:09:15,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:09:15,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:09:15,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:09:15,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:09:15,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:09:15,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:09:15,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:09:15,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:09:15,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:09:15,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:09:15,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:09:15,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:09:15,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:09:15,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:09:15,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:09:15,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:09:15,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:09:15,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:09:15,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:09:15,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:09:15,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:09:15,974 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 03:09:15,997 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:09:15,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:09:15,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:09:15,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:09:15,999 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:09:15,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:09:15,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:09:16,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:09:16,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:09:16,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:09:16,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:09:16,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:09:16,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:09:16,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:09:16,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:09:16,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:09:16,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:09:16,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:09:16,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:09:16,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:09:16,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:09:16,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:09:16,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:09:16,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:09:16,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:09:16,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:09:16,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:09:16,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:09:16,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:09:16,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:09:16,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:09:16,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:09:16,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:09:16,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:09:16,361 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:09:16,362 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label46.c [2020-10-14 03:09:16,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0a2db751/9ac9c7cf12ed42a6a5b8dc9375ca221e/FLAG14ea6be5d [2020-10-14 03:09:17,258 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:09:17,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label46.c [2020-10-14 03:09:17,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0a2db751/9ac9c7cf12ed42a6a5b8dc9375ca221e/FLAG14ea6be5d [2020-10-14 03:09:17,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0a2db751/9ac9c7cf12ed42a6a5b8dc9375ca221e [2020-10-14 03:09:17,760 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:09:17,762 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:09:17,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:09:17,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:09:17,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:09:17,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:09:17" (1/1) ... [2020-10-14 03:09:17,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:17, skipping insertion in model container [2020-10-14 03:09:17,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:09:17" (1/1) ... [2020-10-14 03:09:17,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:09:17,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:09:19,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:09:19,594 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:09:20,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:09:20,332 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:09:20,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:20 WrapperNode [2020-10-14 03:09:20,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:09:20,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:09:20,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:09:20,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:09:20,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:20" (1/1) ... [2020-10-14 03:09:20,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:20" (1/1) ... [2020-10-14 03:09:20,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:20" (1/1) ... [2020-10-14 03:09:20,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:20" (1/1) ... [2020-10-14 03:09:20,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:20" (1/1) ... [2020-10-14 03:09:20,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:20" (1/1) ... [2020-10-14 03:09:20,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:20" (1/1) ... [2020-10-14 03:09:20,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:09:20,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:09:20,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:09:20,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:09:20,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:09:20,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:09:20,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:09:20,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:09:20,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:09:20,781 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:09:20,781 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:09:20,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:09:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:09:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:09:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:09:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:09:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:09:20,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:09:20,784 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:09:20,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:09:20,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:09:20,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:09:34,544 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:09:34,545 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:09:34,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:09:34 BoogieIcfgContainer [2020-10-14 03:09:34,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:09:34,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:09:34,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:09:34,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:09:34,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:09:17" (1/3) ... [2020-10-14 03:09:34,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b5c98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:09:34, skipping insertion in model container [2020-10-14 03:09:34,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:20" (2/3) ... [2020-10-14 03:09:34,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b5c98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:09:34, skipping insertion in model container [2020-10-14 03:09:34,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:09:34" (3/3) ... [2020-10-14 03:09:34,568 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label46.c [2020-10-14 03:09:34,583 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:09:34,593 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:09:34,608 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:09:34,637 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:09:34,637 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:09:34,637 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:09:34,637 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:09:34,637 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:09:34,637 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:09:34,638 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:09:34,638 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:09:34,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:09:34,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 03:09:34,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:09:34,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:09:34,691 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:09:34,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:09:34,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1542666417, now seen corresponding path program 1 times [2020-10-14 03:09:34,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:09:34,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165379564] [2020-10-14 03:09:34,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:09:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:34,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:35,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:35,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:09:35,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:35,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-14 03:09:35,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:35,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:35,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:09:35,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:09:35,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:09:35,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:09:35,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:09:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:35,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:35,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:35,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:09:35,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:35,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 03:09:35,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:35,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:35,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:09:35,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:09:35,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:09:35,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:35,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:09:35,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165379564] [2020-10-14 03:09:35,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:09:35,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 03:09:35,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615600220] [2020-10-14 03:09:35,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:09:35,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:09:35,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:09:35,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:09:35,594 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-14 03:09:59,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:09:59,859 INFO L93 Difference]: Finished difference Result 4116 states and 7691 transitions. [2020-10-14 03:09:59,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:09:59,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-14 03:09:59,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:09:59,911 INFO L225 Difference]: With dead ends: 4116 [2020-10-14 03:09:59,911 INFO L226 Difference]: Without dead ends: 2899 [2020-10-14 03:09:59,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:10:00,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-14 03:10:00,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 2762. [2020-10-14 03:10:00,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2762 states. [2020-10-14 03:10:00,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4546 transitions. [2020-10-14 03:10:00,200 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 4546 transitions. Word has length 72 [2020-10-14 03:10:00,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:10:00,204 INFO L479 AbstractCegarLoop]: Abstraction has 2762 states and 4546 transitions. [2020-10-14 03:10:00,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:10:00,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 4546 transitions. [2020-10-14 03:10:00,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 03:10:00,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:10:00,224 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:10:00,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:10:00,225 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:10:00,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:10:00,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1070666394, now seen corresponding path program 1 times [2020-10-14 03:10:00,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:10:00,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415058186] [2020-10-14 03:10:00,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:10:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:00,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:00,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:01,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:01,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 03:10:01,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:10:01,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1487 [2020-10-14 03:10:01,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:01,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:01,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:10:01,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:10:01,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:10:01,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:10:01,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:10:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:01,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:01,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:01,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:10:01,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:01,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:10:01,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:01,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:10:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:10:01,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:10:02,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:10:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:02,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:02,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:02,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:10:02,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:02,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 03:10:02,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:02,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:02,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:10:02,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:02,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:10:02,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:10:02,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415058186] [2020-10-14 03:10:02,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:10:02,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:10:02,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969066402] [2020-10-14 03:10:02,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:10:02,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:10:02,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:10:02,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:10:02,334 INFO L87 Difference]: Start difference. First operand 2762 states and 4546 transitions. Second operand 6 states. [2020-10-14 03:10:25,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:10:25,789 INFO L93 Difference]: Finished difference Result 10482 states and 17638 transitions. [2020-10-14 03:10:25,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:10:25,791 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-10-14 03:10:25,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:10:25,852 INFO L225 Difference]: With dead ends: 10482 [2020-10-14 03:10:25,853 INFO L226 Difference]: Without dead ends: 7726 [2020-10-14 03:10:25,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:10:25,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7726 states. [2020-10-14 03:10:26,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7726 to 7684. [2020-10-14 03:10:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7684 states. [2020-10-14 03:10:26,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7684 states to 7684 states and 12115 transitions. [2020-10-14 03:10:26,138 INFO L78 Accepts]: Start accepts. Automaton has 7684 states and 12115 transitions. Word has length 142 [2020-10-14 03:10:26,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:10:26,142 INFO L479 AbstractCegarLoop]: Abstraction has 7684 states and 12115 transitions. [2020-10-14 03:10:26,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:10:26,142 INFO L276 IsEmpty]: Start isEmpty. Operand 7684 states and 12115 transitions. [2020-10-14 03:10:26,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 03:10:26,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:10:26,150 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:10:26,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:10:26,151 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:10:26,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:10:26,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1826001525, now seen corresponding path program 1 times [2020-10-14 03:10:26,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:10:26,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030330565] [2020-10-14 03:10:26,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:10:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:26,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:26,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:27,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:28,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:28,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 03:10:28,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:10:28,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2313 [2020-10-14 03:10:28,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:28,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:28,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:10:28,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:10:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:10:28,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:28,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:10:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:28,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:28,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:28,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:10:28,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:28,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:10:28,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:28,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:10:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:10:28,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:28,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:10:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:28,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:28,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:28,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:10:28,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:28,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 03:10:28,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:28,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:28,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:10:28,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:10:28,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:10:28,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030330565] [2020-10-14 03:10:28,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:10:28,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:10:28,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163157316] [2020-10-14 03:10:28,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:10:28,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:10:28,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:10:28,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:10:28,836 INFO L87 Difference]: Start difference. First operand 7684 states and 12115 transitions. Second operand 5 states. [2020-10-14 03:10:50,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:10:50,169 INFO L93 Difference]: Finished difference Result 17945 states and 29502 transitions. [2020-10-14 03:10:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:10:50,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-14 03:10:50,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:10:50,244 INFO L225 Difference]: With dead ends: 17945 [2020-10-14 03:10:50,245 INFO L226 Difference]: Without dead ends: 12717 [2020-10-14 03:10:50,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:10:50,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12717 states. [2020-10-14 03:10:50,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12717 to 12618. [2020-10-14 03:10:50,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12618 states. [2020-10-14 03:10:50,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12618 states to 12618 states and 20493 transitions. [2020-10-14 03:10:50,752 INFO L78 Accepts]: Start accepts. Automaton has 12618 states and 20493 transitions. Word has length 147 [2020-10-14 03:10:50,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:10:50,760 INFO L479 AbstractCegarLoop]: Abstraction has 12618 states and 20493 transitions. [2020-10-14 03:10:50,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:10:50,762 INFO L276 IsEmpty]: Start isEmpty. Operand 12618 states and 20493 transitions. [2020-10-14 03:10:50,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 03:10:50,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:10:50,770 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, 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] [2020-10-14 03:10:50,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:10:50,771 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:10:50,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:10:50,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1499317899, now seen corresponding path program 1 times [2020-10-14 03:10:50,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:10:50,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59381548] [2020-10-14 03:10:50,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:10:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:50,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:51,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:51,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:51,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 03:10:51,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:10:51,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 879 [2020-10-14 03:10:51,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:51,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:10:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 03:10:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:10:51,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:10:51,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:10:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:51,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:51,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:51,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:10:51,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:51,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:10:51,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:51,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:10:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:10:51,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:51,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:10:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:51,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:51,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:51,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 03:10:51,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:51,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 03:10:51,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:51,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:51,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:10:51,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:51,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 03:10:51,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:10:52,057 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:10:52,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59381548] [2020-10-14 03:10:52,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:10:52,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:10:52,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220832653] [2020-10-14 03:10:52,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:10:52,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:10:52,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:10:52,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:10:52,063 INFO L87 Difference]: Start difference. First operand 12618 states and 20493 transitions. Second operand 5 states. [2020-10-14 03:11:15,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:11:15,348 INFO L93 Difference]: Finished difference Result 37423 states and 62620 transitions. [2020-10-14 03:11:15,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:11:15,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-14 03:11:15,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:11:15,468 INFO L225 Difference]: With dead ends: 37423 [2020-10-14 03:11:15,468 INFO L226 Difference]: Without dead ends: 24811 [2020-10-14 03:11:15,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:11:15,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24811 states. [2020-10-14 03:11:16,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24811 to 24799. [2020-10-14 03:11:16,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24799 states. [2020-10-14 03:11:16,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24799 states to 24799 states and 37983 transitions. [2020-10-14 03:11:16,281 INFO L78 Accepts]: Start accepts. Automaton has 24799 states and 37983 transitions. Word has length 172 [2020-10-14 03:11:16,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:11:16,282 INFO L479 AbstractCegarLoop]: Abstraction has 24799 states and 37983 transitions. [2020-10-14 03:11:16,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:11:16,282 INFO L276 IsEmpty]: Start isEmpty. Operand 24799 states and 37983 transitions. [2020-10-14 03:11:16,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-14 03:11:16,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:11:16,290 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, 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] [2020-10-14 03:11:16,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:11:16,292 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:11:16,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:11:16,292 INFO L82 PathProgramCache]: Analyzing trace with hash 969442181, now seen corresponding path program 1 times [2020-10-14 03:11:16,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:11:16,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762542419] [2020-10-14 03:11:16,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:11:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:17,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:17,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:18,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:18,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 03:11:18,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:11:18,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2317 [2020-10-14 03:11:18,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:18,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:18,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:11:18,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-14 03:11:18,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:11:18,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:18,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:11:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:18,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:18,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:11:18,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:18,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:11:18,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:18,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:11:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:11:18,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:18,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:11:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:18,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:19,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:19,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 03:11:19,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:19,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 03:11:19,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:19,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:11:19,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:19,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 03:11:19,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 03:11:19,182 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:11:19,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762542419] [2020-10-14 03:11:19,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:11:19,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:11:19,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418336525] [2020-10-14 03:11:19,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:11:19,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:11:19,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:11:19,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:11:19,185 INFO L87 Difference]: Start difference. First operand 24799 states and 37983 transitions. Second operand 6 states. [2020-10-14 03:11:45,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:11:45,795 INFO L93 Difference]: Finished difference Result 69080 states and 110365 transitions. [2020-10-14 03:11:45,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:11:45,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 214 [2020-10-14 03:11:45,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:11:46,019 INFO L225 Difference]: With dead ends: 69080 [2020-10-14 03:11:46,019 INFO L226 Difference]: Without dead ends: 44287 [2020-10-14 03:11:46,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:11:46,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44287 states. [2020-10-14 03:11:47,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44287 to 44285. [2020-10-14 03:11:47,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44285 states. [2020-10-14 03:11:47,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44285 states to 44285 states and 66840 transitions. [2020-10-14 03:11:47,368 INFO L78 Accepts]: Start accepts. Automaton has 44285 states and 66840 transitions. Word has length 214 [2020-10-14 03:11:47,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:11:47,369 INFO L479 AbstractCegarLoop]: Abstraction has 44285 states and 66840 transitions. [2020-10-14 03:11:47,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:11:47,369 INFO L276 IsEmpty]: Start isEmpty. Operand 44285 states and 66840 transitions. [2020-10-14 03:11:47,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-14 03:11:47,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:11:47,396 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:11:47,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:11:47,396 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:11:47,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:11:47,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1854293041, now seen corresponding path program 1 times [2020-10-14 03:11:47,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:11:47,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467811406] [2020-10-14 03:11:47,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:11:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:47,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:47,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:47,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:49,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:52,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:52,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-14 03:11:52,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:11:52,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 03:11:52,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:52,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:52,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:11:52,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:11:52,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 03:11:52,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:52,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:11:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:52,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:52,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:52,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:11:52,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:52,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:11:52,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:52,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:52,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:11:52,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:52,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:11:52,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:52,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:11:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:52,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:52,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:52,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:11:52,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:52,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 03:11:52,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:52,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:52,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:11:52,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:52,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:11:52,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:52,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 03:11:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:52,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:53,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:53,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 03:11:53,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:53,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-14 03:11:53,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:53,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:53,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:11:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:11:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 03:11:53,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:11:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:11:53,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467811406] [2020-10-14 03:11:53,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:11:53,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:11:53,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502432] [2020-10-14 03:11:53,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:11:53,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:11:53,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:11:53,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:11:53,944 INFO L87 Difference]: Start difference. First operand 44285 states and 66840 transitions. Second operand 7 states. [2020-10-14 03:12:20,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:12:20,599 INFO L93 Difference]: Finished difference Result 89143 states and 140916 transitions. [2020-10-14 03:12:20,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:12:20,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2020-10-14 03:12:20,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:12:20,824 INFO L225 Difference]: With dead ends: 89143 [2020-10-14 03:12:20,824 INFO L226 Difference]: Without dead ends: 45667 [2020-10-14 03:12:20,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:12:20,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45667 states. [2020-10-14 03:12:23,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45667 to 45425. [2020-10-14 03:12:23,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45425 states. [2020-10-14 03:12:23,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45425 states to 45425 states and 63785 transitions. [2020-10-14 03:12:23,553 INFO L78 Accepts]: Start accepts. Automaton has 45425 states and 63785 transitions. Word has length 304 [2020-10-14 03:12:23,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:12:23,554 INFO L479 AbstractCegarLoop]: Abstraction has 45425 states and 63785 transitions. [2020-10-14 03:12:23,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:12:23,554 INFO L276 IsEmpty]: Start isEmpty. Operand 45425 states and 63785 transitions. [2020-10-14 03:12:23,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-14 03:12:23,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:12:23,578 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:12:23,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:12:23,579 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:12:23,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:12:23,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1114560053, now seen corresponding path program 1 times [2020-10-14 03:12:23,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:12:23,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522301909] [2020-10-14 03:12:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:12:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:23,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:23,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:23,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:25,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:27,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:27,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-14 03:12:27,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:12:27,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3639 [2020-10-14 03:12:27,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:27,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:12:27,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 03:12:27,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 03:12:27,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:27,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:12:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:27,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:27,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:27,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:12:27,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:27,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:12:27,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:27,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:27,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:12:27,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:12:27,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:12:27,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:12:27,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:12:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:27,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:27,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:27,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 03:12:27,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:27,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 03:12:27,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:27,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:12:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:12:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:12:27,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:12:27,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 03:12:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:27,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:27,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:27,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:27,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 03:12:27,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:12:27,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-14 03:12:27,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:27,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:12:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:12:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 03:12:27,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:12:28,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522301909] [2020-10-14 03:12:28,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:12:28,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:12:28,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615451049] [2020-10-14 03:12:28,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:12:28,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:12:28,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:12:28,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:12:28,162 INFO L87 Difference]: Start difference. First operand 45425 states and 63785 transitions. Second operand 7 states. [2020-10-14 03:13:09,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:13:09,986 INFO L93 Difference]: Finished difference Result 129419 states and 199498 transitions. [2020-10-14 03:13:09,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:13:09,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-10-14 03:13:09,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:13:10,413 INFO L225 Difference]: With dead ends: 129419 [2020-10-14 03:13:10,414 INFO L226 Difference]: Without dead ends: 84803 [2020-10-14 03:13:10,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:13:10,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84803 states.