/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem06_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 20:04:23,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 20:04:23,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 20:04:23,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 20:04:23,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 20:04:23,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 20:04:23,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 20:04:23,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 20:04:23,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 20:04:23,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 20:04:23,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 20:04:23,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 20:04:23,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 20:04:23,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 20:04:23,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 20:04:23,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 20:04:23,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 20:04:23,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 20:04:23,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 20:04:23,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 20:04:23,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 20:04:23,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 20:04:23,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 20:04:23,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 20:04:23,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 20:04:23,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 20:04:23,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 20:04:23,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 20:04:23,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 20:04:23,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 20:04:23,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 20:04:23,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 20:04:23,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 20:04:23,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 20:04:23,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 20:04:23,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 20:04:23,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 20:04:23,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 20:04:23,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 20:04:23,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 20:04:23,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 20:04:23,966 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 20:04:24,002 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 20:04:24,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 20:04:24,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 20:04:24,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 20:04:24,005 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 20:04:24,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 20:04:24,006 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 20:04:24,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 20:04:24,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 20:04:24,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 20:04:24,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 20:04:24,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 20:04:24,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 20:04:24,008 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 20:04:24,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 20:04:24,009 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 20:04:24,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 20:04:24,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 20:04:24,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 20:04:24,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 20:04:24,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 20:04:24,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 20:04:24,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 20:04:24,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 20:04:24,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 20:04:24,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 20:04:24,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 20:04:24,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 20:04:24,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 20:04:24,011 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 20:04:24,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 20:04:24,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 20:04:24,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 20:04:24,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 20:04:24,325 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 20:04:24,325 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label54.c [2020-10-14 20:04:24,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91a6cb1d9/acae23b1cf93419badea1bd8eb2ba4b2/FLAGf67ab57c0 [2020-10-14 20:04:25,450 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 20:04:25,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label54.c [2020-10-14 20:04:25,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91a6cb1d9/acae23b1cf93419badea1bd8eb2ba4b2/FLAGf67ab57c0 [2020-10-14 20:04:25,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91a6cb1d9/acae23b1cf93419badea1bd8eb2ba4b2 [2020-10-14 20:04:25,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 20:04:25,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 20:04:25,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 20:04:25,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 20:04:25,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 20:04:25,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:04:25" (1/1) ... [2020-10-14 20:04:25,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4839a71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:04:25, skipping insertion in model container [2020-10-14 20:04:25,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:04:25" (1/1) ... [2020-10-14 20:04:25,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 20:04:26,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 20:04:28,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 20:04:28,351 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 20:04:29,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 20:04:29,469 INFO L208 MainTranslator]: Completed translation [2020-10-14 20:04:29,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:04:29 WrapperNode [2020-10-14 20:04:29,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 20:04:29,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 20:04:29,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 20:04:29,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 20:04:29,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:04:29" (1/1) ... [2020-10-14 20:04:29,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:04:29" (1/1) ... [2020-10-14 20:04:29,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:04:29" (1/1) ... [2020-10-14 20:04:29,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:04:29" (1/1) ... [2020-10-14 20:04:29,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:04:29" (1/1) ... [2020-10-14 20:04:29,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:04:29" (1/1) ... [2020-10-14 20:04:29,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:04:29" (1/1) ... [2020-10-14 20:04:29,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 20:04:29,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 20:04:29,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 20:04:29,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 20:04:29,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:04:29" (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 20:04:29,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 20:04:29,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 20:04:29,850 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 20:04:29,850 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 20:04:29,851 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 20:04:29,851 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 20:04:29,851 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 20:04:29,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 20:04:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 20:04:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 20:04:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 20:04:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 20:04:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 20:04:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 20:04:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 20:04:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 20:04:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 20:04:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 20:04:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 20:04:36,621 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 20:04:36,621 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 20:04:36,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:04:36 BoogieIcfgContainer [2020-10-14 20:04:36,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 20:04:36,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 20:04:36,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 20:04:36,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 20:04:36,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:04:25" (1/3) ... [2020-10-14 20:04:36,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bf0413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:04:36, skipping insertion in model container [2020-10-14 20:04:36,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:04:29" (2/3) ... [2020-10-14 20:04:36,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bf0413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:04:36, skipping insertion in model container [2020-10-14 20:04:36,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:04:36" (3/3) ... [2020-10-14 20:04:36,649 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label54.c [2020-10-14 20:04:36,659 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 20:04:36,669 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 20:04:36,683 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 20:04:36,715 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 20:04:36,715 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 20:04:36,715 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 20:04:36,715 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 20:04:36,716 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 20:04:36,716 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 20:04:36,716 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 20:04:36,716 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 20:04:36,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 20:04:36,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2020-10-14 20:04:36,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:04:36,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:04:36,811 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:04:36,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:04:36,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1733621080, now seen corresponding path program 1 times [2020-10-14 20:04:36,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:04:36,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570922289] [2020-10-14 20:04:36,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:04:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:38,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:40,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:42,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:42,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 995 [2020-10-14 20:04:42,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:04:42,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5277 [2020-10-14 20:04:42,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:42,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:42,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 20:04:42,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:04:42,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 989 [2020-10-14 20:04:42,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 20:04:44,750 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:04:44,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:04:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:44,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:44,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:44,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:04:44,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:04:44,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 20:04:44,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:44,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:44,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:04:44,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:04:44,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:04:44,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:04:46,089 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 20:04:46,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570922289] [2020-10-14 20:04:46,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:04:46,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 20:04:46,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690528695] [2020-10-14 20:04:46,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:04:46,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:04:46,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:04:46,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:04:46,114 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 5 states. [2020-10-14 20:04:46,311 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:04:46,591 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 20:05:05,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:05:05,341 INFO L93 Difference]: Finished difference Result 4871 states and 9169 transitions. [2020-10-14 20:05:05,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:05:05,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 979 [2020-10-14 20:05:05,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:05:05,407 INFO L225 Difference]: With dead ends: 4871 [2020-10-14 20:05:05,407 INFO L226 Difference]: Without dead ends: 3488 [2020-10-14 20:05:05,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:05:05,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2020-10-14 20:05:05,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 3449. [2020-10-14 20:05:05,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3449 states. [2020-10-14 20:05:05,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 5686 transitions. [2020-10-14 20:05:05,630 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 5686 transitions. Word has length 979 [2020-10-14 20:05:05,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:05:05,635 INFO L479 AbstractCegarLoop]: Abstraction has 3449 states and 5686 transitions. [2020-10-14 20:05:05,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:05:05,635 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 5686 transitions. [2020-10-14 20:05:05,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1008 [2020-10-14 20:05:05,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:05:05,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:05,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 20:05:05,686 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:05:05,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:05:05,687 INFO L82 PathProgramCache]: Analyzing trace with hash -549216036, now seen corresponding path program 1 times [2020-10-14 20:05:05,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:05:05,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380959550] [2020-10-14 20:05:05,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:05:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:06,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:07,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:11,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:11,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1025 [2020-10-14 20:05:11,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:05:11,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 20:05:11,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:11,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:11,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 20:05:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 20:05:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 986 [2020-10-14 20:05:11,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:12,428 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:05:12,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:05:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:12,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:12,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:12,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:05:12,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:12,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 20:05:12,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:12,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:05:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:05:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:05:12,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:12,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:05:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:12,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:12,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:12,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 20:05:12,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:12,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 20:05:12,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:12,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:12,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:05:12,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:05:12,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 20:05:12,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:13,479 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:05:13,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380959550] [2020-10-14 20:05:13,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:05:13,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:05:13,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124549707] [2020-10-14 20:05:13,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:05:13,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:05:13,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:05:13,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:05:13,490 INFO L87 Difference]: Start difference. First operand 3449 states and 5686 transitions. Second operand 5 states. [2020-10-14 20:05:13,632 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:05:27,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:05:27,251 INFO L93 Difference]: Finished difference Result 10051 states and 16804 transitions. [2020-10-14 20:05:27,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:05:27,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1007 [2020-10-14 20:05:27,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:05:27,289 INFO L225 Difference]: With dead ends: 10051 [2020-10-14 20:05:27,289 INFO L226 Difference]: Without dead ends: 6608 [2020-10-14 20:05:27,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:05:27,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6608 states. [2020-10-14 20:05:27,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6608 to 6591. [2020-10-14 20:05:27,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6591 states. [2020-10-14 20:05:27,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6591 states to 6591 states and 10242 transitions. [2020-10-14 20:05:27,473 INFO L78 Accepts]: Start accepts. Automaton has 6591 states and 10242 transitions. Word has length 1007 [2020-10-14 20:05:27,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:05:27,475 INFO L479 AbstractCegarLoop]: Abstraction has 6591 states and 10242 transitions. [2020-10-14 20:05:27,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:05:27,475 INFO L276 IsEmpty]: Start isEmpty. Operand 6591 states and 10242 transitions. [2020-10-14 20:05:27,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2020-10-14 20:05:27,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:05:27,505 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:27,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 20:05:27,506 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:05:27,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:05:27,506 INFO L82 PathProgramCache]: Analyzing trace with hash 997112545, now seen corresponding path program 1 times [2020-10-14 20:05:27,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:05:27,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987363261] [2020-10-14 20:05:27,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:05:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:27,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:28,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:30,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:32,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:32,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1043 [2020-10-14 20:05:32,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:05:32,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5160 [2020-10-14 20:05:32,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:32,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:32,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 20:05:32,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:05:32,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 20:05:32,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:33,111 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:05:33,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:05:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:33,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:33,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:33,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:05:33,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:33,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 20:05:33,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:33,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:33,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:05:33,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:05:33,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:05:33,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:33,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:05:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:33,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:33,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:33,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:33,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 20:05:33,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:05:33,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 20:05:33,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:33,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:33,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:05:33,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:05:33,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 20:05:33,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:33,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 20:05:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:33,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:33,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:33,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:05:33,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:33,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 20:05:33,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:33,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:05:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:05:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 20:05:33,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 20:05:34,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987363261] [2020-10-14 20:05:34,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:05:34,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:05:34,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657871295] [2020-10-14 20:05:34,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:05:34,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:05:34,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:05:34,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:05:34,057 INFO L87 Difference]: Start difference. First operand 6591 states and 10242 transitions. Second operand 8 states. [2020-10-14 20:05:34,201 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:05:34,541 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:05:51,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:05:51,151 INFO L93 Difference]: Finished difference Result 19803 states and 31779 transitions. [2020-10-14 20:05:51,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:05:51,152 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1023 [2020-10-14 20:05:51,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:05:51,211 INFO L225 Difference]: With dead ends: 19803 [2020-10-14 20:05:51,212 INFO L226 Difference]: Without dead ends: 13218 [2020-10-14 20:05:51,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 20:05:51,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13218 states. [2020-10-14 20:05:51,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13218 to 13055. [2020-10-14 20:05:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13055 states. [2020-10-14 20:05:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13055 states to 13055 states and 19337 transitions. [2020-10-14 20:05:51,625 INFO L78 Accepts]: Start accepts. Automaton has 13055 states and 19337 transitions. Word has length 1023 [2020-10-14 20:05:51,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:05:51,626 INFO L479 AbstractCegarLoop]: Abstraction has 13055 states and 19337 transitions. [2020-10-14 20:05:51,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:05:51,626 INFO L276 IsEmpty]: Start isEmpty. Operand 13055 states and 19337 transitions. [2020-10-14 20:05:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1041 [2020-10-14 20:05:51,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:05:51,702 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:51,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 20:05:51,702 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:05:51,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:05:51,703 INFO L82 PathProgramCache]: Analyzing trace with hash 633012695, now seen corresponding path program 1 times [2020-10-14 20:05:51,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:05:51,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311657108] [2020-10-14 20:05:51,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:05:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:51,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:52,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:53,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:53,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:57,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:57,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1062 [2020-10-14 20:05:57,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:05:57,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5171 [2020-10-14 20:05:57,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:57,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:57,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:05:57,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 20:05:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 20:05:57,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 20:05:57,470 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:05:57,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:05:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:57,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:57,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:57,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:05:57,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:57,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 20:05:57,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:57,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:57,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:05:57,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:05:57,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:05:57,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:57,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:05:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:57,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:57,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:57,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 20:05:57,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:57,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 20:05:57,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:57,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:57,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:05:57,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:05:57,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 20:05:57,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:57,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 20:05:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:57,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:57,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:57,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:57,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 20:05:57,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:05:57,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 20:05:57,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:57,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:05:57,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:05:57,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 20:05:57,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:57,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 20:05:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:57,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:57,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:57,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:05:57,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:57,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 20:05:57,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:57,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:05:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:05:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 20:05:57,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 68 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 20:05:58,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311657108] [2020-10-14 20:05:58,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:05:58,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 20:05:58,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438591164] [2020-10-14 20:05:58,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:05:58,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:05:58,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:05:58,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:05:58,561 INFO L87 Difference]: Start difference. First operand 13055 states and 19337 transitions. Second operand 8 states. [2020-10-14 20:05:58,808 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:05:59,341 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:06:18,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:06:18,567 INFO L93 Difference]: Finished difference Result 32696 states and 51206 transitions. [2020-10-14 20:06:18,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:06:18,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1040 [2020-10-14 20:06:18,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:06:18,654 INFO L225 Difference]: With dead ends: 32696 [2020-10-14 20:06:18,654 INFO L226 Difference]: Without dead ends: 19647 [2020-10-14 20:06:18,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-10-14 20:06:18,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19647 states. [2020-10-14 20:06:19,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19647 to 19532. [2020-10-14 20:06:19,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19532 states. [2020-10-14 20:06:19,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19532 states to 19532 states and 29001 transitions. [2020-10-14 20:06:19,249 INFO L78 Accepts]: Start accepts. Automaton has 19532 states and 29001 transitions. Word has length 1040 [2020-10-14 20:06:19,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:06:19,249 INFO L479 AbstractCegarLoop]: Abstraction has 19532 states and 29001 transitions. [2020-10-14 20:06:19,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:06:19,250 INFO L276 IsEmpty]: Start isEmpty. Operand 19532 states and 29001 transitions. [2020-10-14 20:06:19,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1049 [2020-10-14 20:06:19,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:06:19,339 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:19,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 20:06:19,340 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:06:19,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:06:19,340 INFO L82 PathProgramCache]: Analyzing trace with hash 2098838071, now seen corresponding path program 1 times [2020-10-14 20:06:19,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:06:19,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389268730] [2020-10-14 20:06:19,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:06:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:19,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:19,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:24,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:24,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1068 [2020-10-14 20:06:24,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:06:24,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-14 20:06:24,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:24,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:06:24,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 20:06:24,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 20:06:24,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:06:25,093 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:06:25,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:06:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:25,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:25,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:25,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:06:25,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:06:25,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 20:06:25,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:25,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:25,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:06:25,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:06:25,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:06:25,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:06:25,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:06:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:25,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:25,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:25,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 20:06:25,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:06:25,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 20:06:25,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:25,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:25,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:06:25,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:06:25,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 20:06:25,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:25,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 20:06:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:25,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:25,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:25,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 20:06:25,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:06:25,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 20:06:25,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:25,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:06:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:06:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 20:06:25,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:06:26,254 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:06:26,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389268730] [2020-10-14 20:06:26,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:06:26,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:06:26,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844426107] [2020-10-14 20:06:26,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:06:26,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:06:26,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:06:26,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:06:26,257 INFO L87 Difference]: Start difference. First operand 19532 states and 29001 transitions. Second operand 7 states. [2020-10-14 20:06:26,391 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:06:27,551 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 20:06:42,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:06:42,120 INFO L93 Difference]: Finished difference Result 59299 states and 94702 transitions. [2020-10-14 20:06:42,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 20:06:42,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1048 [2020-10-14 20:06:42,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:06:42,518 INFO L225 Difference]: With dead ends: 59299 [2020-10-14 20:06:42,518 INFO L226 Difference]: Without dead ends: 39773 [2020-10-14 20:06:42,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:06:42,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39773 states. [2020-10-14 20:06:43,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39773 to 39652. [2020-10-14 20:06:43,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39652 states. [2020-10-14 20:06:43,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39652 states to 39652 states and 61002 transitions. [2020-10-14 20:06:43,655 INFO L78 Accepts]: Start accepts. Automaton has 39652 states and 61002 transitions. Word has length 1048 [2020-10-14 20:06:43,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:06:43,656 INFO L479 AbstractCegarLoop]: Abstraction has 39652 states and 61002 transitions. [2020-10-14 20:06:43,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:06:43,656 INFO L276 IsEmpty]: Start isEmpty. Operand 39652 states and 61002 transitions. [2020-10-14 20:06:43,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1070 [2020-10-14 20:06:43,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:06:43,796 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:43,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 20:06:43,797 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:06:43,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:06:43,798 INFO L82 PathProgramCache]: Analyzing trace with hash 195355921, now seen corresponding path program 1 times [2020-10-14 20:06:43,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:06:43,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773432553] [2020-10-14 20:06:43,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:06:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:44,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:44,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:44,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:48,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:48,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1091 [2020-10-14 20:06:48,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:06:48,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 20:06:48,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:48,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:48,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:06:48,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 20:06:48,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 20:06:48,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:49,250 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:06:49,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:06:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:49,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:49,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:49,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:06:49,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:06:49,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 20:06:49,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:49,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:06:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:06:49,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:06:49,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:49,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:06:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:49,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:49,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:49,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 20:06:49,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:06:49,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 20:06:49,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:49,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:06:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:06:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:06:49,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:49,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 20:06:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:49,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:49,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:49,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 20:06:49,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:06:49,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 20:06:49,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:49,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:49,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:06:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:06:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 20:06:49,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:49,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 20:06:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:49,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:49,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:49,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 20:06:49,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:06:49,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 20:06:49,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:49,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:49,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:06:49,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:06:49,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 20:06:49,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 20:06:51,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773432553] [2020-10-14 20:06:51,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:06:51,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:06:51,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616781386] [2020-10-14 20:06:51,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:06:51,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:06:51,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:06:51,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:06:51,452 INFO L87 Difference]: Start difference. First operand 39652 states and 61002 transitions. Second operand 7 states. [2020-10-14 20:06:51,862 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:06:53,151 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 20:07:09,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:07:09,281 INFO L93 Difference]: Finished difference Result 80589 states and 132555 transitions. [2020-10-14 20:07:09,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:07:09,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1069 [2020-10-14 20:07:09,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:07:09,455 INFO L225 Difference]: With dead ends: 80589 [2020-10-14 20:07:09,455 INFO L226 Difference]: Without dead ends: 40943 [2020-10-14 20:07:09,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:07:09,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40943 states. [2020-10-14 20:07:10,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40943 to 40428. [2020-10-14 20:07:10,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40428 states. [2020-10-14 20:07:10,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40428 states to 40428 states and 57493 transitions. [2020-10-14 20:07:10,622 INFO L78 Accepts]: Start accepts. Automaton has 40428 states and 57493 transitions. Word has length 1069 [2020-10-14 20:07:10,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:07:10,623 INFO L479 AbstractCegarLoop]: Abstraction has 40428 states and 57493 transitions. [2020-10-14 20:07:10,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:07:10,623 INFO L276 IsEmpty]: Start isEmpty. Operand 40428 states and 57493 transitions. [2020-10-14 20:07:10,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2020-10-14 20:07:10,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:07:10,725 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:10,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 20:07:10,725 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:07:10,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:07:10,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1939466572, now seen corresponding path program 1 times [2020-10-14 20:07:10,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:07:10,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896378938] [2020-10-14 20:07:10,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:07:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:07:10,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:11,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:11,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:12,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:16,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:07:16,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1103 [2020-10-14 20:07:16,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:07:16,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5177 [2020-10-14 20:07:16,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:07:16,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:07:16,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:07:16,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 20:07:16,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 20:07:16,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:07:16,326 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:07:16,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:07:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:07:16,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:16,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:07:16,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:07:16,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:07:16,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 20:07:16,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:07:16,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:07:16,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:07:16,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:07:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:07:16,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:07:16,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:07:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:07:16,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:16,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:07:16,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 20:07:16,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:07:16,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 20:07:16,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:07:16,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:07:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:07:16,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:07:16,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 20:07:16,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:07:16,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 20:07:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:07:16,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:16,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:07:16,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 20:07:16,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:07:16,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 20:07:16,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:07:16,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:07:16,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:07:16,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:07:16,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 20:07:16,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:07:16,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 20:07:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:07:16,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:16,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:07:16,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:07:16,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:07:16,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 20:07:16,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:07:16,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:07:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:07:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 20:07:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:07:16,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:07:16,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 20:07:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:07:16,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:16,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:07:16,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 20:07:16,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:07:16,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 20:07:16,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:07:16,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:07:16,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:07:16,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 20:07:16,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:07:16,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:07:16,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 20:07:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:07:16,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:16,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:07:16,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:07:16,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:07:16,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 20:07:16,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:07:16,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:07:16,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:07:16,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 20:07:16,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:07:16,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:07:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 101 proven. 41 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 20:07:17,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896378938] [2020-10-14 20:07:17,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:07:17,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:07:17,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989075462] [2020-10-14 20:07:17,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:07:17,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:07:17,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:07:17,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:07:17,074 INFO L87 Difference]: Start difference. First operand 40428 states and 57493 transitions. Second operand 7 states. [2020-10-14 20:07:17,216 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:07:18,664 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:07:36,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:07:36,624 INFO L93 Difference]: Finished difference Result 121861 states and 210827 transitions. [2020-10-14 20:07:36,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:07:36,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1077 [2020-10-14 20:07:36,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:07:37,080 INFO L225 Difference]: With dead ends: 121861 [2020-10-14 20:07:37,080 INFO L226 Difference]: Without dead ends: 81439 [2020-10-14 20:07:37,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:07:37,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81439 states. [2020-10-14 20:07:38,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81439 to 80350. [2020-10-14 20:07:38,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80350 states. [2020-10-14 20:07:39,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80350 states to 80350 states and 113846 transitions. [2020-10-14 20:07:39,177 INFO L78 Accepts]: Start accepts. Automaton has 80350 states and 113846 transitions. Word has length 1077 [2020-10-14 20:07:39,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:07:39,178 INFO L479 AbstractCegarLoop]: Abstraction has 80350 states and 113846 transitions. [2020-10-14 20:07:39,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:07:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 80350 states and 113846 transitions. [2020-10-14 20:07:39,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1099 [2020-10-14 20:07:39,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:07:39,407 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:39,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 20:07:39,407 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:07:39,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:07:39,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1315731694, now seen corresponding path program 1 times [2020-10-14 20:07:39,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:07:39,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177240488] [2020-10-14 20:07:39,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:07:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:07:39,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:39,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:39,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:43,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:44,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:07:44,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1122 [2020-10-14 20:07:44,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:07:44,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-14 20:07:44,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:07:44,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:07:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:07:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 20:07:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 20:07:44,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:07:44,974 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:07:44,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:07:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:07:44,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:44,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:07:44,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:07:44,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:07:44,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 20:07:44,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:07:44,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:07:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:07:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:07:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:07:44,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:07:45,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:07:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:07:45,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:45,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:07:45,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 20:07:45,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:07:45,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 20:07:45,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:07:45,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:07:45,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:07:45,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:07:45,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:07:45,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:07:45,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 20:07:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:07:45,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:45,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:07:45,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:07:45,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:07:45,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 20:07:45,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:07:45,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:07:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:07:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:07:45,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 20:07:45,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:07:45,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 20:07:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:07:45,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:45,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:07:45,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 20:07:45,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:07:45,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 20:07:45,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:07:45,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:07:45,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:07:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:07:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 20:07:45,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:07:45,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 20:07:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:07:45,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:07:45,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:07:45,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:07:45,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:07:45,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 20:07:45,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:07:45,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:07:45,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:07:45,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:07:45,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 20:07:45,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:07:45,955 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 172 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 20:07:45,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177240488] [2020-10-14 20:07:45,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:07:45,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:07:45,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896452110] [2020-10-14 20:07:45,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:07:45,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:07:45,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:07:45,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:07:45,958 INFO L87 Difference]: Start difference. First operand 80350 states and 113846 transitions. Second operand 7 states. [2020-10-14 20:07:46,296 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:07:47,043 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129