/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/Problem15_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:55:15,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:55:15,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:55:15,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:55:15,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:55:15,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:55:15,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:55:15,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:55:15,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:55:15,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:55:15,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:55:15,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:55:15,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:55:15,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:55:15,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:55:15,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:55:15,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:55:15,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:55:15,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:55:15,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:55:15,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:55:15,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:55:15,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:55:15,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:55:15,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:55:15,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:55:15,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:55:15,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:55:15,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:55:15,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:55:15,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:55:15,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:55:15,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:55:15,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:55:15,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:55:15,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:55:15,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:55:15,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:55:15,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:55:15,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:55:15,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:55:15,980 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 21:55:16,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:55:16,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:55:16,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:55:16,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:55:16,006 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:55:16,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:55:16,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:55:16,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:55:16,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:55:16,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:55:16,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:55:16,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:55:16,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:55:16,008 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:55:16,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:55:16,009 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:55:16,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:55:16,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:55:16,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:55:16,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:55:16,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:55:16,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:55:16,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:55:16,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:55:16,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:55:16,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:55:16,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:55:16,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:55:16,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:55:16,012 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 21:55:16,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:55:16,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:55:16,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:55:16,414 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:55:16,415 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:55:16,416 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label15.c [2020-10-14 21:55:16,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e103c5399/a51e8c0bb0b14bffa64cebc44cf649bc/FLAG466214823 [2020-10-14 21:55:17,297 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:55:17,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label15.c [2020-10-14 21:55:17,328 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e103c5399/a51e8c0bb0b14bffa64cebc44cf649bc/FLAG466214823 [2020-10-14 21:55:17,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e103c5399/a51e8c0bb0b14bffa64cebc44cf649bc [2020-10-14 21:55:17,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:55:17,423 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:55:17,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:55:17,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:55:17,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:55:17,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:55:17" (1/1) ... [2020-10-14 21:55:17,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a04e0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:17, skipping insertion in model container [2020-10-14 21:55:17,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:55:17" (1/1) ... [2020-10-14 21:55:17,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:55:17,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:55:18,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:55:18,830 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:55:19,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:55:19,237 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:55:19,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:19 WrapperNode [2020-10-14 21:55:19,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:55:19,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:55:19,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:55:19,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:55:19,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:19" (1/1) ... [2020-10-14 21:55:19,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:19" (1/1) ... [2020-10-14 21:55:19,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:19" (1/1) ... [2020-10-14 21:55:19,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:19" (1/1) ... [2020-10-14 21:55:19,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:19" (1/1) ... [2020-10-14 21:55:19,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:19" (1/1) ... [2020-10-14 21:55:19,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:19" (1/1) ... [2020-10-14 21:55:19,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:55:19,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:55:19,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:55:19,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:55:19,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:19" (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 21:55:19,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:55:19,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:55:19,539 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:55:19,539 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:55:19,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:55:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:55:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:55:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:55:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:55:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:55:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:55:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:55:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:55:28,076 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:55:28,076 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:55:28,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:55:28 BoogieIcfgContainer [2020-10-14 21:55:28,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:55:28,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:55:28,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:55:28,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:55:28,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:55:17" (1/3) ... [2020-10-14 21:55:28,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e886ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:55:28, skipping insertion in model container [2020-10-14 21:55:28,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:19" (2/3) ... [2020-10-14 21:55:28,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e886ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:55:28, skipping insertion in model container [2020-10-14 21:55:28,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:55:28" (3/3) ... [2020-10-14 21:55:28,099 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label15.c [2020-10-14 21:55:28,113 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:55:28,124 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:55:28,141 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:55:28,175 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:55:28,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:55:28,175 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:55:28,176 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:55:28,176 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:55:28,176 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:55:28,176 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:55:28,176 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:55:28,208 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 21:55:28,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 21:55:28,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:28,217 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] [2020-10-14 21:55:28,218 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:28,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:28,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1844678893, now seen corresponding path program 1 times [2020-10-14 21:55:28,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:28,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034464019] [2020-10-14 21:55:28,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:28,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:28,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:28,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 21:55:28,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-14 21:55:28,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:28,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:55:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:55:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 21:55:28,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:55:28,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:28,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:28,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:28,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:28,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:28,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 21:55:28,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:28,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:28,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:28,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:28,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:55:28,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:28,867 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 21:55:28,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034464019] [2020-10-14 21:55:28,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:55:28,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:55:28,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633174597] [2020-10-14 21:55:28,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:55:28,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:28,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:55:28,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:55:28,898 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 21:55:37,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:37,013 INFO L93 Difference]: Finished difference Result 1245 states and 2225 transitions. [2020-10-14 21:55:37,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:55:37,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-14 21:55:37,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:37,049 INFO L225 Difference]: With dead ends: 1245 [2020-10-14 21:55:37,050 INFO L226 Difference]: Without dead ends: 729 [2020-10-14 21:55:37,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:55:37,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2020-10-14 21:55:37,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 712. [2020-10-14 21:55:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-10-14 21:55:37,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1206 transitions. [2020-10-14 21:55:37,165 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1206 transitions. Word has length 25 [2020-10-14 21:55:37,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:37,165 INFO L479 AbstractCegarLoop]: Abstraction has 712 states and 1206 transitions. [2020-10-14 21:55:37,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:55:37,166 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1206 transitions. [2020-10-14 21:55:37,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 21:55:37,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:37,170 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:55:37,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:55:37,171 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:37,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:37,172 INFO L82 PathProgramCache]: Analyzing trace with hash -98981398, now seen corresponding path program 1 times [2020-10-14 21:55:37,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:37,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469646477] [2020-10-14 21:55:37,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:37,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:37,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:38,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:38,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 21:55:38,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:55:38,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1518 [2020-10-14 21:55:38,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:38,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:38,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:55:38,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:55:38,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:55:38,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:55:38,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:38,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:38,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:38,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:38,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:38,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:55:38,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:38,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:38,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:38,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:38,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:55:38,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:38,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:38,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:39,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:39,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:55:39,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:39,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 21:55:39,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:39,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:39,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:39,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:39,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:55:39,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:55:39,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469646477] [2020-10-14 21:55:39,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:55:39,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:55:39,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832843785] [2020-10-14 21:55:39,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:55:39,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:39,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:55:39,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:55:39,122 INFO L87 Difference]: Start difference. First operand 712 states and 1206 transitions. Second operand 7 states. [2020-10-14 21:55:51,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:51,373 INFO L93 Difference]: Finished difference Result 2100 states and 3613 transitions. [2020-10-14 21:55:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:55:51,374 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-14 21:55:51,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:51,389 INFO L225 Difference]: With dead ends: 2100 [2020-10-14 21:55:51,389 INFO L226 Difference]: Without dead ends: 1394 [2020-10-14 21:55:51,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:55:51,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2020-10-14 21:55:51,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1356. [2020-10-14 21:55:51,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1356 states. [2020-10-14 21:55:51,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 1971 transitions. [2020-10-14 21:55:51,494 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 1971 transitions. Word has length 94 [2020-10-14 21:55:51,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:51,495 INFO L479 AbstractCegarLoop]: Abstraction has 1356 states and 1971 transitions. [2020-10-14 21:55:51,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:55:51,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 1971 transitions. [2020-10-14 21:55:51,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 21:55:51,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:51,506 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:55:51,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:55:51,507 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:51,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:51,508 INFO L82 PathProgramCache]: Analyzing trace with hash -626949676, now seen corresponding path program 1 times [2020-10-14 21:55:51,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:51,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630392379] [2020-10-14 21:55:51,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:51,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:51,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:52,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:52,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 21:55:52,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:55:52,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-14 21:55:52,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:52,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:52,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:55:52,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:55:52,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 21:55:52,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:52,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:52,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:52,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:52,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:52,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:52,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:55:52,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:52,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:52,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:55:52,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:52,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:52,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:52,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:52,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:55:52,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:52,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 21:55:52,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:52,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:55:52,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:55:52,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630392379] [2020-10-14 21:55:52,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:55:52,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:55:52,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754759256] [2020-10-14 21:55:52,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:55:52,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:52,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:55:52,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:55:52,447 INFO L87 Difference]: Start difference. First operand 1356 states and 1971 transitions. Second operand 7 states. [2020-10-14 21:56:00,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:00,101 INFO L93 Difference]: Finished difference Result 4019 states and 5922 transitions. [2020-10-14 21:56:00,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:56:00,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-14 21:56:00,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:00,131 INFO L225 Difference]: With dead ends: 4019 [2020-10-14 21:56:00,131 INFO L226 Difference]: Without dead ends: 2669 [2020-10-14 21:56:00,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:56:00,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2020-10-14 21:56:00,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 2297. [2020-10-14 21:56:00,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2297 states. [2020-10-14 21:56:00,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 3051 transitions. [2020-10-14 21:56:00,224 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 3051 transitions. Word has length 111 [2020-10-14 21:56:00,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:00,224 INFO L479 AbstractCegarLoop]: Abstraction has 2297 states and 3051 transitions. [2020-10-14 21:56:00,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:56:00,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 3051 transitions. [2020-10-14 21:56:00,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-14 21:56:00,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:00,229 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:56:00,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:56:00,230 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:00,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:00,230 INFO L82 PathProgramCache]: Analyzing trace with hash -707274951, now seen corresponding path program 1 times [2020-10-14 21:56:00,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:00,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343133613] [2020-10-14 21:56:00,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:00,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:00,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:02,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:02,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-14 21:56:02,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:56:02,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1812 [2020-10-14 21:56:02,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:02,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:02,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:56:02,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:56:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-14 21:56:02,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:02,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:02,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:02,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:02,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:02,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:02,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:56:02,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:02,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:02,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:56:02,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:02,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:02,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:02,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:02,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:56:02,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:02,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-14 21:56:02,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:02,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:02,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:02,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:02,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-14 21:56:02,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:03,141 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:56:03,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343133613] [2020-10-14 21:56:03,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:03,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:56:03,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368993030] [2020-10-14 21:56:03,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:56:03,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:03,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:56:03,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:56:03,148 INFO L87 Difference]: Start difference. First operand 2297 states and 3051 transitions. Second operand 6 states. [2020-10-14 21:56:10,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:10,828 INFO L93 Difference]: Finished difference Result 5555 states and 7665 transitions. [2020-10-14 21:56:10,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:56:10,830 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 299 [2020-10-14 21:56:10,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:10,857 INFO L225 Difference]: With dead ends: 5555 [2020-10-14 21:56:10,857 INFO L226 Difference]: Without dead ends: 4198 [2020-10-14 21:56:10,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:56:10,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2020-10-14 21:56:10,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 4175. [2020-10-14 21:56:10,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4175 states. [2020-10-14 21:56:10,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4175 states to 4175 states and 5231 transitions. [2020-10-14 21:56:10,980 INFO L78 Accepts]: Start accepts. Automaton has 4175 states and 5231 transitions. Word has length 299 [2020-10-14 21:56:10,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:10,982 INFO L479 AbstractCegarLoop]: Abstraction has 4175 states and 5231 transitions. [2020-10-14 21:56:10,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:56:10,982 INFO L276 IsEmpty]: Start isEmpty. Operand 4175 states and 5231 transitions. [2020-10-14 21:56:10,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-14 21:56:10,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:10,990 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:10,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:56:10,990 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:10,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:10,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1265050901, now seen corresponding path program 1 times [2020-10-14 21:56:10,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:10,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14500161] [2020-10-14 21:56:10,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:11,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:11,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:11,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:16,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:16,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-14 21:56:16,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:56:16,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 21:56:16,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:16,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:16,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:56:16,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:56:16,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 21:56:16,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:16,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:16,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:16,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:16,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:16,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:16,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:56:16,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:16,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:16,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:16,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:16,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:56:16,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:16,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:16,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:16,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:16,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:56:16,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:16,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-14 21:56:16,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:16,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:16,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:16,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 21:56:16,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:17,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 21:56:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:17,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:17,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:17,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:56:17,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:17,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 21:56:17,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:17,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:17,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:17,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 21:56:17,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:17,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:17,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-14 21:56:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:17,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:17,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:17,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:56:17,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:17,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 21:56:17,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:17,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 21:56:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:17,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:56:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 54 proven. 156 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 21:56:18,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14500161] [2020-10-14 21:56:18,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:18,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:56:18,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927226518] [2020-10-14 21:56:18,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:56:18,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:18,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:56:18,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:56:18,062 INFO L87 Difference]: Start difference. First operand 4175 states and 5231 transitions. Second operand 7 states. [2020-10-14 21:56:27,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:27,264 INFO L93 Difference]: Finished difference Result 8101 states and 10249 transitions. [2020-10-14 21:56:27,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:56:27,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 391 [2020-10-14 21:56:27,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:27,292 INFO L225 Difference]: With dead ends: 8101 [2020-10-14 21:56:27,292 INFO L226 Difference]: Without dead ends: 4239 [2020-10-14 21:56:27,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:56:27,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4239 states. [2020-10-14 21:56:27,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 4189. [2020-10-14 21:56:27,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4189 states. [2020-10-14 21:56:27,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 5246 transitions. [2020-10-14 21:56:27,446 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 5246 transitions. Word has length 391 [2020-10-14 21:56:27,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:27,447 INFO L479 AbstractCegarLoop]: Abstraction has 4189 states and 5246 transitions. [2020-10-14 21:56:27,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:56:27,447 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 5246 transitions. [2020-10-14 21:56:27,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-14 21:56:27,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:27,458 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:56:27,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:56:27,458 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:27,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:27,459 INFO L82 PathProgramCache]: Analyzing trace with hash 502199864, now seen corresponding path program 1 times [2020-10-14 21:56:27,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:27,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883989099] [2020-10-14 21:56:27,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:27,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:28,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:28,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:29,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:31,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:31,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 406 [2020-10-14 21:56:31,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:56:31,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3850 [2020-10-14 21:56:31,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:31,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:56:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:56:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 400 [2020-10-14 21:56:31,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:31,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:31,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:31,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:31,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:31,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:31,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:56:31,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:31,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:31,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:31,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:31,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:56:31,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:31,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:31,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:31,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:31,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:31,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:56:31,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:56:31,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-14 21:56:31,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:31,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:56:31,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:32,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:56:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:32,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:32,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:33,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:33,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:56:33,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:56:33,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1209 [2020-10-14 21:56:33,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:33,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:33,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:33,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:33,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:56:33,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 21:56:33,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883989099] [2020-10-14 21:56:33,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:33,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:56:33,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455816862] [2020-10-14 21:56:33,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:56:33,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:33,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:56:33,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:56:33,715 INFO L87 Difference]: Start difference. First operand 4189 states and 5246 transitions. Second operand 7 states. [2020-10-14 21:56:48,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:48,599 INFO L93 Difference]: Finished difference Result 9315 states and 12577 transitions. [2020-10-14 21:56:48,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:56:48,601 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 394 [2020-10-14 21:56:48,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:48,642 INFO L225 Difference]: With dead ends: 9315 [2020-10-14 21:56:48,642 INFO L226 Difference]: Without dead ends: 7005 [2020-10-14 21:56:48,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:56:48,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7005 states. [2020-10-14 21:56:48,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7005 to 5127. [2020-10-14 21:56:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5127 states. [2020-10-14 21:56:48,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 6608 transitions. [2020-10-14 21:56:48,832 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 6608 transitions. Word has length 394 [2020-10-14 21:56:48,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:48,833 INFO L479 AbstractCegarLoop]: Abstraction has 5127 states and 6608 transitions. [2020-10-14 21:56:48,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:56:48,834 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 6608 transitions. [2020-10-14 21:56:48,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-14 21:56:48,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:48,847 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:48,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:56:48,847 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:48,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:48,848 INFO L82 PathProgramCache]: Analyzing trace with hash 2125689620, now seen corresponding path program 1 times [2020-10-14 21:56:48,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:48,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138514926] [2020-10-14 21:56:48,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:49,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:49,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:51,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:51,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-14 21:56:51,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:56:51,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2730 [2020-10-14 21:56:51,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:51,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:51,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:51,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-14 21:56:51,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 21:56:51,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:51,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:51,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:51,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:51,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:51,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:56:51,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:51,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:51,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:51,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:51,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:51,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:51,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:52,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:52,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:56:52,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:52,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 21:56:52,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:52,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:52,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:52,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:52,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:52,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:52,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:56:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:52,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:52,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:52,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:56:52,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:52,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 21:56:52,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:52,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:52,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:52,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:52,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:56:52,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:52,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-14 21:56:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:52,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:52,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:52,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:56:52,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:52,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 21:56:52,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:52,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:56:52,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 21:56:52,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138514926] [2020-10-14 21:56:52,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:52,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:56:52,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249385618] [2020-10-14 21:56:52,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:56:52,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:52,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:56:52,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:56:52,646 INFO L87 Difference]: Start difference. First operand 5127 states and 6608 transitions. Second operand 8 states. [2020-10-14 21:57:09,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:09,372 INFO L93 Difference]: Finished difference Result 13725 states and 18265 transitions. [2020-10-14 21:57:09,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 21:57:09,375 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 465 [2020-10-14 21:57:09,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:09,429 INFO L225 Difference]: With dead ends: 13725 [2020-10-14 21:57:09,429 INFO L226 Difference]: Without dead ends: 8911 [2020-10-14 21:57:09,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:57:09,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8911 states. [2020-10-14 21:57:09,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8911 to 8886. [2020-10-14 21:57:09,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8886 states. [2020-10-14 21:57:09,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8886 states to 8886 states and 11003 transitions. [2020-10-14 21:57:09,656 INFO L78 Accepts]: Start accepts. Automaton has 8886 states and 11003 transitions. Word has length 465 [2020-10-14 21:57:09,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:09,658 INFO L479 AbstractCegarLoop]: Abstraction has 8886 states and 11003 transitions. [2020-10-14 21:57:09,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:57:09,658 INFO L276 IsEmpty]: Start isEmpty. Operand 8886 states and 11003 transitions. [2020-10-14 21:57:09,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2020-10-14 21:57:09,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:09,674 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:09,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:57:09,675 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:09,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:09,676 INFO L82 PathProgramCache]: Analyzing trace with hash -597792980, now seen corresponding path program 1 times [2020-10-14 21:57:09,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:09,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362625987] [2020-10-14 21:57:09,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:09,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:10,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:11,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:12,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:14,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:14,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-14 21:57:14,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:57:14,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 21:57:14,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:14,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-14 21:57:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:57:14,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:14,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:14,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:14,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:14,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:14,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:14,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:57:14,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:14,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:14,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:14,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:14,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:14,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:14,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:14,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:15,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:15,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:57:15,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:15,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 21:57:15,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:15,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:15,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:15,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:15,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:15,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:15,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:57:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:15,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:15,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:15,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:57:15,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:15,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 21:57:15,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:15,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:15,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:15,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:15,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:57:15,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 49 [2020-10-14 21:57:15,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-14 21:57:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:15,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:15,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:15,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 21:57:15,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:15,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 21:57:15,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:15,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:15,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 21:57:15,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 21:57:15,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362625987] [2020-10-14 21:57:15,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:15,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:57:15,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997737604] [2020-10-14 21:57:15,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:57:15,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:15,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:57:15,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:57:15,534 INFO L87 Difference]: Start difference. First operand 8886 states and 11003 transitions. Second operand 7 states. [2020-10-14 21:57:29,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:29,242 INFO L93 Difference]: Finished difference Result 20124 states and 26058 transitions. [2020-10-14 21:57:29,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:57:29,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 477 [2020-10-14 21:57:29,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:29,290 INFO L225 Difference]: With dead ends: 20124 [2020-10-14 21:57:29,291 INFO L226 Difference]: Without dead ends: 11861 [2020-10-14 21:57:29,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:57:29,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11861 states. [2020-10-14 21:57:29,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11861 to 11793. [2020-10-14 21:57:29,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11793 states. [2020-10-14 21:57:29,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11793 states to 11793 states and 14415 transitions. [2020-10-14 21:57:29,592 INFO L78 Accepts]: Start accepts. Automaton has 11793 states and 14415 transitions. Word has length 477 [2020-10-14 21:57:29,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:29,593 INFO L479 AbstractCegarLoop]: Abstraction has 11793 states and 14415 transitions. [2020-10-14 21:57:29,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:57:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 11793 states and 14415 transitions. [2020-10-14 21:57:29,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-10-14 21:57:29,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:29,614 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:29,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:57:29,615 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:29,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:29,618 INFO L82 PathProgramCache]: Analyzing trace with hash -345350972, now seen corresponding path program 1 times [2020-10-14 21:57:29,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:29,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559624417] [2020-10-14 21:57:29,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:29,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:30,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:30,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:31,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:33,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:33,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-14 21:57:33,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:57:33,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3742 [2020-10-14 21:57:33,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:33,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:33,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:33,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 371 [2020-10-14 21:57:33,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:57:33,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:33,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:33,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:33,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:33,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:33,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:33,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:57:33,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:33,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:33,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:33,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:33,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:33,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:33,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:33,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:57:33,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:33,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 21:57:33,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:33,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:33,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:33,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:33,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:33,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:33,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:57:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:33,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:34,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:34,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:57:34,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:34,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 21:57:34,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:34,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:34,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:34,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:34,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:57:34,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:34,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-14 21:57:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:34,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:34,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:34,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 21:57:34,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:34,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 21:57:34,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:34,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:34,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:34,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:34,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 21:57:34,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 236 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 21:57:34,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559624417] [2020-10-14 21:57:34,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:34,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:57:34,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518928748] [2020-10-14 21:57:34,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:57:34,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:34,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:57:34,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:57:34,380 INFO L87 Difference]: Start difference. First operand 11793 states and 14415 transitions. Second operand 7 states. [2020-10-14 21:57:47,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:47,295 INFO L93 Difference]: Finished difference Result 26450 states and 33267 transitions. [2020-10-14 21:57:47,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:57:47,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 482 [2020-10-14 21:57:47,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:47,365 INFO L225 Difference]: With dead ends: 26450 [2020-10-14 21:57:47,366 INFO L226 Difference]: Without dead ends: 14974 [2020-10-14 21:57:47,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:57:47,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14974 states. [2020-10-14 21:57:47,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14974 to 14327. [2020-10-14 21:57:47,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14327 states. [2020-10-14 21:57:47,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14327 states to 14327 states and 17203 transitions. [2020-10-14 21:57:47,705 INFO L78 Accepts]: Start accepts. Automaton has 14327 states and 17203 transitions. Word has length 482 [2020-10-14 21:57:47,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:47,705 INFO L479 AbstractCegarLoop]: Abstraction has 14327 states and 17203 transitions. [2020-10-14 21:57:47,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:57:47,706 INFO L276 IsEmpty]: Start isEmpty. Operand 14327 states and 17203 transitions. [2020-10-14 21:57:47,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2020-10-14 21:57:47,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:47,715 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:47,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:57:47,715 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:47,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:47,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1598010150, now seen corresponding path program 1 times [2020-10-14 21:57:47,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:47,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384776932] [2020-10-14 21:57:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:48,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:48,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:49,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:49,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:52,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:52,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 522 [2020-10-14 21:57:52,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:57:52,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4586 [2020-10-14 21:57:52,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:52,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:52,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:52,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-14 21:57:52,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:57:52,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:52,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:52,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:52,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:52,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:52,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:52,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:57:52,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:52,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:52,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:52,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:52,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:52,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:52,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:52,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:52,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:57:52,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:52,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 21:57:52,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:52,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:52,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:52,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:52,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:52,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:57:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:52,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:52,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:52,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:57:52,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:52,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 21:57:52,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:52,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:52,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:52,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:52,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:57:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 21:57:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:53,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:53,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:53,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 21:57:53,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:53,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 21:57:53,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:53,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:53,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 21:57:53,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:53,252 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 21:57:53,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384776932] [2020-10-14 21:57:53,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:53,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:57:53,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470227114] [2020-10-14 21:57:53,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:57:53,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:53,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:57:53,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:57:53,255 INFO L87 Difference]: Start difference. First operand 14327 states and 17203 transitions. Second operand 7 states. [2020-10-14 21:58:04,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:04,729 INFO L93 Difference]: Finished difference Result 28054 states and 33828 transitions. [2020-10-14 21:58:04,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:58:04,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 508 [2020-10-14 21:58:04,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:04,787 INFO L225 Difference]: With dead ends: 28054 [2020-10-14 21:58:04,787 INFO L226 Difference]: Without dead ends: 14351 [2020-10-14 21:58:04,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:58:04,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14351 states. [2020-10-14 21:58:05,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14351 to 13709. [2020-10-14 21:58:05,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13709 states. [2020-10-14 21:58:05,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13709 states to 13709 states and 15736 transitions. [2020-10-14 21:58:05,118 INFO L78 Accepts]: Start accepts. Automaton has 13709 states and 15736 transitions. Word has length 508 [2020-10-14 21:58:05,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:05,119 INFO L479 AbstractCegarLoop]: Abstraction has 13709 states and 15736 transitions. [2020-10-14 21:58:05,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:58:05,119 INFO L276 IsEmpty]: Start isEmpty. Operand 13709 states and 15736 transitions. [2020-10-14 21:58:05,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2020-10-14 21:58:05,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:05,137 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:05,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:58:05,137 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:05,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:05,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1165220073, now seen corresponding path program 1 times [2020-10-14 21:58:05,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:05,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838816032] [2020-10-14 21:58:05,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:05,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:05,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:06,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:10,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:10,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 581 [2020-10-14 21:58:10,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:58:10,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 21:58:10,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:10,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 21:58:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:58:10,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:10,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:10,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:10,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:10,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:10,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:10,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:58:10,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:10,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:10,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:10,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:10,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:10,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:10,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:10,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:10,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:58:10,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:10,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 21:58:10,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:10,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:10,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:10,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:58:10,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:10,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:58:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:10,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:10,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:10,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:58:10,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:10,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 21:58:10,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:10,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:10,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:10,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:10,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:58:10,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:11,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 21:58:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:11,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:11,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:11,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:58:11,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:11,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 21:58:11,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:11,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:11,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:11,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 21:58:11,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:11,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:11,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-14 21:58:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:11,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:11,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:11,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:58:11,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:11,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 21:58:11,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:11,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 21:58:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:11,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 188 proven. 151 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2020-10-14 21:58:11,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838816032] [2020-10-14 21:58:11,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:11,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:58:11,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185195883] [2020-10-14 21:58:11,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:58:11,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:11,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:58:11,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:58:11,697 INFO L87 Difference]: Start difference. First operand 13709 states and 15736 transitions. Second operand 7 states. [2020-10-14 21:58:25,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:25,609 INFO L93 Difference]: Finished difference Result 28395 states and 32675 transitions. [2020-10-14 21:58:25,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:58:25,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 565 [2020-10-14 21:58:25,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:25,661 INFO L225 Difference]: With dead ends: 28395 [2020-10-14 21:58:25,662 INFO L226 Difference]: Without dead ends: 15310 [2020-10-14 21:58:25,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:58:25,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15310 states. [2020-10-14 21:58:25,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15310 to 15264. [2020-10-14 21:58:25,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15264 states. [2020-10-14 21:58:25,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15264 states to 15264 states and 17361 transitions. [2020-10-14 21:58:25,979 INFO L78 Accepts]: Start accepts. Automaton has 15264 states and 17361 transitions. Word has length 565 [2020-10-14 21:58:25,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:25,980 INFO L479 AbstractCegarLoop]: Abstraction has 15264 states and 17361 transitions. [2020-10-14 21:58:25,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:58:25,980 INFO L276 IsEmpty]: Start isEmpty. Operand 15264 states and 17361 transitions. [2020-10-14 21:58:25,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2020-10-14 21:58:25,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:25,999 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:26,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:58:26,000 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:26,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:26,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1939483471, now seen corresponding path program 1 times [2020-10-14 21:58:26,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:26,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780434008] [2020-10-14 21:58:26,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:26,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:26,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:28,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:31,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:31,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 593 [2020-10-14 21:58:31,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:58:31,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-14 21:58:31,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:31,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:31,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:31,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:58:31,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 21:58:31,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:31,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:31,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:31,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:31,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:31,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:31,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:58:31,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:31,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:31,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:31,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:31,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:31,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:31,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:58:31,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:31,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 21:58:31,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:31,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:31,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:31,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:58:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:31,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:31,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:31,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:58:31,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:31,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 21:58:31,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:31,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:58:31,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:31,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:58:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:31,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:31,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:31,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:58:31,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:31,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 21:58:31,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:31,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:31,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:31,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:31,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:58:31,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:31,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-14 21:58:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:31,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:31,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:31,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:58:31,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:31,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 21:58:31,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:31,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 21:58:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:31,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 217 proven. 68 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2020-10-14 21:58:31,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780434008] [2020-10-14 21:58:31,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:31,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:58:31,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744087651] [2020-10-14 21:58:31,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:58:31,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:31,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:58:31,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:58:31,936 INFO L87 Difference]: Start difference. First operand 15264 states and 17361 transitions. Second operand 7 states. [2020-10-14 21:58:49,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:49,406 INFO L93 Difference]: Finished difference Result 29657 states and 34954 transitions. [2020-10-14 21:58:49,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:58:49,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 577 [2020-10-14 21:58:49,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:49,488 INFO L225 Difference]: With dead ends: 29657 [2020-10-14 21:58:49,488 INFO L226 Difference]: Without dead ends: 18424 [2020-10-14 21:58:49,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:58:49,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18424 states. [2020-10-14 21:58:49,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18424 to 18093. [2020-10-14 21:58:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18093 states. [2020-10-14 21:58:49,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18093 states to 18093 states and 20819 transitions. [2020-10-14 21:58:49,938 INFO L78 Accepts]: Start accepts. Automaton has 18093 states and 20819 transitions. Word has length 577 [2020-10-14 21:58:49,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:49,939 INFO L479 AbstractCegarLoop]: Abstraction has 18093 states and 20819 transitions. [2020-10-14 21:58:49,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:58:49,940 INFO L276 IsEmpty]: Start isEmpty. Operand 18093 states and 20819 transitions. [2020-10-14 21:58:49,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2020-10-14 21:58:49,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:49,953 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:58:49,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 21:58:49,953 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:49,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:49,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1376404664, now seen corresponding path program 1 times [2020-10-14 21:58:49,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:49,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133531780] [2020-10-14 21:58:49,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:50,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:50,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:52,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:52,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 590 [2020-10-14 21:58:52,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:58:52,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1965 [2020-10-14 21:58:52,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:52,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:52,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:52,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:58:52,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 21:58:52,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:52,438 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-14 21:58:52,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:52,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:52,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:52,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:52,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:52,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:58:52,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:52,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:52,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:52,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:52,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:52,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:52,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:52,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:52,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:52,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:58:52,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:52,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 21:58:52,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:52,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:52,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:52,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:52,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:52,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:52,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:58:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:52,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:52,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:52,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:58:52,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:52,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 21:58:52,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:52,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:52,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:52,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:52,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:58:52,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:52,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:58:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:52,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:53,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:53,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 21:58:53,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:53,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 21:58:53,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:53,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:53,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:53,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:53,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 21:58:53,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:53,239 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 318 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 21:58:53,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133531780] [2020-10-14 21:58:53,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:53,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:58:53,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213077974] [2020-10-14 21:58:53,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:58:53,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:53,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:58:53,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:58:53,242 INFO L87 Difference]: Start difference. First operand 18093 states and 20819 transitions. Second operand 7 states.