/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:34:48,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:34:48,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:34:48,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:34:48,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:34:48,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:34:48,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:34:48,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:34:48,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:34:48,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:34:48,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:34:48,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:34:48,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:34:48,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:34:48,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:34:48,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:34:48,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:34:48,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:34:48,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:34:48,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:34:48,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:34:48,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:34:48,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:34:48,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:34:48,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:34:48,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:34:48,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:34:49,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:34:49,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:34:49,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:34:49,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:34:49,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:34:49,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:34:49,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:34:49,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:34:49,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:34:49,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:34:49,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:34:49,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:34:49,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:34:49,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:34:49,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 03:34:49,039 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:34:49,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:34:49,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:34:49,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:34:49,042 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:34:49,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:34:49,042 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:34:49,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:34:49,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:34:49,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:34:49,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:34:49,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:34:49,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:34:49,043 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:34:49,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:34:49,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:34:49,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:34:49,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:34:49,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:34:49,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:34:49,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:34:49,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:34:49,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:34:49,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:34:49,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:34:49,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:34:49,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:34:49,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:34:49,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:34:49,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:34:49,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:34:49,416 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:34:49,424 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:34:49,427 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:34:49,427 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:34:49,428 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label45.c [2020-10-14 03:34:49,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b871b1fbc/5e9abdb2216c422aa25d01e541d9205e/FLAGe8b350cd6 [2020-10-14 03:34:50,176 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:34:50,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label45.c [2020-10-14 03:34:50,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b871b1fbc/5e9abdb2216c422aa25d01e541d9205e/FLAGe8b350cd6 [2020-10-14 03:34:50,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b871b1fbc/5e9abdb2216c422aa25d01e541d9205e [2020-10-14 03:34:50,332 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:34:50,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:34:50,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:34:50,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:34:50,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:34:50,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:34:50" (1/1) ... [2020-10-14 03:34:50,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7845d484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:34:50, skipping insertion in model container [2020-10-14 03:34:50,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:34:50" (1/1) ... [2020-10-14 03:34:50,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:34:50,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:34:51,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:34:51,515 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:34:51,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:34:51,882 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:34:51,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:34:51 WrapperNode [2020-10-14 03:34:51,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:34:51,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:34:51,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:34:51,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:34:51,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:34:51" (1/1) ... [2020-10-14 03:34:51,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:34:51" (1/1) ... [2020-10-14 03:34:51,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:34:51" (1/1) ... [2020-10-14 03:34:51,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:34:51" (1/1) ... [2020-10-14 03:34:52,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:34:51" (1/1) ... [2020-10-14 03:34:52,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:34:51" (1/1) ... [2020-10-14 03:34:52,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:34:51" (1/1) ... [2020-10-14 03:34:52,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:34:52,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:34:52,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:34:52,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:34:52,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:34:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:34:52,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:34:52,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:34:52,206 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:34:52,207 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:34:52,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:34:52,207 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:34:52,207 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:34:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:34:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:34:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:34:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:34:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:34:52,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:34:57,945 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:34:57,945 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:34:57,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:34:57 BoogieIcfgContainer [2020-10-14 03:34:57,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:34:57,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:34:57,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:34:57,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:34:57,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:34:50" (1/3) ... [2020-10-14 03:34:57,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5986ab49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:34:57, skipping insertion in model container [2020-10-14 03:34:57,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:34:51" (2/3) ... [2020-10-14 03:34:57,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5986ab49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:34:57, skipping insertion in model container [2020-10-14 03:34:57,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:34:57" (3/3) ... [2020-10-14 03:34:57,963 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label45.c [2020-10-14 03:34:57,975 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:34:57,983 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:34:57,999 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:34:58,029 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:34:58,029 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:34:58,030 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:34:58,030 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:34:58,030 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:34:58,030 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:34:58,030 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:34:58,030 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:34:58,059 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:34:58,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 03:34:58,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:34:58,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:34:58,069 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:34:58,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:34:58,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1195543285, now seen corresponding path program 1 times [2020-10-14 03:34:58,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:34:58,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717699018] [2020-10-14 03:34:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:34:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:58,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:58,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:58,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 03:34:58,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:58,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-14 03:34:58,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:58,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:58,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:34:58,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:34:58,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 03:34:58,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:34:58,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:34:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:58,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:58,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:58,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:34:58,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:58,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 03:34:58,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:58,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:58,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:34:58,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:58,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:34:58,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:34:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:34:58,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717699018] [2020-10-14 03:34:58,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:34:58,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:34:58,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816297404] [2020-10-14 03:34:58,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:34:58,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:34:58,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:34:58,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:34:58,857 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:35:05,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:05,909 INFO L93 Difference]: Finished difference Result 1198 states and 2162 transitions. [2020-10-14 03:35:05,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:35:05,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-14 03:35:05,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:05,942 INFO L225 Difference]: With dead ends: 1198 [2020-10-14 03:35:05,942 INFO L226 Difference]: Without dead ends: 696 [2020-10-14 03:35:05,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:35:05,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-14 03:35:06,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 688. [2020-10-14 03:35:06,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-10-14 03:35:06,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1008 transitions. [2020-10-14 03:35:06,061 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1008 transitions. Word has length 35 [2020-10-14 03:35:06,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:06,062 INFO L479 AbstractCegarLoop]: Abstraction has 688 states and 1008 transitions. [2020-10-14 03:35:06,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:35:06,062 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1008 transitions. [2020-10-14 03:35:06,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 03:35:06,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:06,068 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:35:06,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:35:06,069 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:06,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:06,070 INFO L82 PathProgramCache]: Analyzing trace with hash 968683602, now seen corresponding path program 1 times [2020-10-14 03:35:06,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:06,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028936376] [2020-10-14 03:35:06,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:06,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:06,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:07,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:07,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 03:35:07,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:35:07,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1646 [2020-10-14 03:35:07,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:07,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:07,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:07,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:35:07,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 03:35:07,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:35:07,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:07,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:07,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:07,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:07,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:07,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:35:07,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:07,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:07,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:07,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:07,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:07,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:35:07,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:35:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:07,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:08,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:08,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:35:08,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:08,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 03:35:08,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:08,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:35:08,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:35:08,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028936376] [2020-10-14 03:35:08,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:35:08,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:35:08,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168990415] [2020-10-14 03:35:08,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:35:08,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:08,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:35:08,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:35:08,068 INFO L87 Difference]: Start difference. First operand 688 states and 1008 transitions. Second operand 5 states. [2020-10-14 03:35:14,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:14,645 INFO L93 Difference]: Finished difference Result 1998 states and 2941 transitions. [2020-10-14 03:35:14,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:35:14,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-14 03:35:14,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:14,655 INFO L225 Difference]: With dead ends: 1998 [2020-10-14 03:35:14,655 INFO L226 Difference]: Without dead ends: 1316 [2020-10-14 03:35:14,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:35:14,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2020-10-14 03:35:14,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1314. [2020-10-14 03:35:14,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-10-14 03:35:14,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1705 transitions. [2020-10-14 03:35:14,730 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1705 transitions. Word has length 104 [2020-10-14 03:35:14,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:14,731 INFO L479 AbstractCegarLoop]: Abstraction has 1314 states and 1705 transitions. [2020-10-14 03:35:14,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:35:14,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1705 transitions. [2020-10-14 03:35:14,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-14 03:35:14,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:14,744 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:35:14,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:35:14,745 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:14,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:14,746 INFO L82 PathProgramCache]: Analyzing trace with hash 775879246, now seen corresponding path program 1 times [2020-10-14 03:35:14,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:14,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113702175] [2020-10-14 03:35:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:14,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:15,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:15,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:16,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:16,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:17,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:19,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:19,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-14 03:35:19,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:35:19,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 03:35:19,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:19,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:35:19,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:35:19,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:19,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:19,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:19,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:19,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:19,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:19,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:35:19,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:19,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:19,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:19,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:19,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:19,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:19,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:35:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:20,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:20,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:20,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:35:20,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:20,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 03:35:20,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:20,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:20,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:20,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:20,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:35:20,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:20,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:35:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:20,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:20,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:20,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:35:20,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:20,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 03:35:20,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:20,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:20,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:20,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:35:20,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:35:20,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:20,425 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:35:20,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113702175] [2020-10-14 03:35:20,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:35:20,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:35:20,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992915151] [2020-10-14 03:35:20,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:35:20,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:20,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:35:20,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:35:20,430 INFO L87 Difference]: Start difference. First operand 1314 states and 1705 transitions. Second operand 7 states. [2020-10-14 03:35:28,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:28,932 INFO L93 Difference]: Finished difference Result 2664 states and 3699 transitions. [2020-10-14 03:35:28,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:35:28,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-10-14 03:35:28,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:28,952 INFO L225 Difference]: With dead ends: 2664 [2020-10-14 03:35:28,953 INFO L226 Difference]: Without dead ends: 1974 [2020-10-14 03:35:28,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 03:35:28,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2020-10-14 03:35:29,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1956. [2020-10-14 03:35:29,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1956 states. [2020-10-14 03:35:29,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 2427 transitions. [2020-10-14 03:35:29,052 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 2427 transitions. Word has length 209 [2020-10-14 03:35:29,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:29,056 INFO L479 AbstractCegarLoop]: Abstraction has 1956 states and 2427 transitions. [2020-10-14 03:35:29,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:35:29,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 2427 transitions. [2020-10-14 03:35:29,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-14 03:35:29,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:29,063 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:35:29,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:35:29,073 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:29,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:29,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1885481652, now seen corresponding path program 1 times [2020-10-14 03:35:29,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:29,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853004737] [2020-10-14 03:35:29,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:29,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:29,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:30,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:34,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:34,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-14 03:35:34,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:35:34,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 03:35:34,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:34,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:35:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:35:34,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:34,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:34,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:34,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:34,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:34,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:34,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 03:35:34,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:34,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:34,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:34,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:34,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:34,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:34,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:35:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:34,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:34,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:34,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:35:34,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:34,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 03:35:34,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:34,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:34,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:34,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:34,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:35:34,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:35:34,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:35:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:34,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:34,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:34,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:35:34,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:34,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 03:35:34,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:34,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:34,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:35:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:35:34,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:34,972 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:35:34,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853004737] [2020-10-14 03:35:34,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:35:34,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:35:34,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984388401] [2020-10-14 03:35:34,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:35:34,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:34,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:35:34,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:35:34,978 INFO L87 Difference]: Start difference. First operand 1956 states and 2427 transitions. Second operand 7 states. [2020-10-14 03:35:46,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:46,226 INFO L93 Difference]: Finished difference Result 4625 states and 5986 transitions. [2020-10-14 03:35:46,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:35:46,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 315 [2020-10-14 03:35:46,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:46,250 INFO L225 Difference]: With dead ends: 4625 [2020-10-14 03:35:46,250 INFO L226 Difference]: Without dead ends: 2982 [2020-10-14 03:35:46,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 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 03:35:46,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2020-10-14 03:35:46,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 2939. [2020-10-14 03:35:46,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2939 states. [2020-10-14 03:35:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 3542 transitions. [2020-10-14 03:35:46,351 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 3542 transitions. Word has length 315 [2020-10-14 03:35:46,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:46,353 INFO L479 AbstractCegarLoop]: Abstraction has 2939 states and 3542 transitions. [2020-10-14 03:35:46,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:35:46,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 3542 transitions. [2020-10-14 03:35:46,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-14 03:35:46,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:46,364 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:35:46,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:35:46,364 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:46,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:46,365 INFO L82 PathProgramCache]: Analyzing trace with hash -973229323, now seen corresponding path program 1 times [2020-10-14 03:35:46,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:46,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938729363] [2020-10-14 03:35:46,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:46,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:46,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:48,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:48,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-14 03:35:48,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:35:48,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1726 [2020-10-14 03:35:48,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:48,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:35:48,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:35:48,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:48,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:48,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:48,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:48,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:48,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:48,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:35:48,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:48,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:48,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:48,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:35:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:48,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:48,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:48,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:35:48,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:48,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-14 03:35:48,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:48,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:48,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:48,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:48,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:35:48,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:35:48,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:35:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:48,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:49,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:49,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:35:49,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:49,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 03:35:49,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:49,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:35:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:35:49,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:49,150 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:35:49,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938729363] [2020-10-14 03:35:49,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:35:49,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:35:49,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631171351] [2020-10-14 03:35:49,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:35:49,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:49,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:35:49,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:35:49,152 INFO L87 Difference]: Start difference. First operand 2939 states and 3542 transitions. Second operand 8 states. [2020-10-14 03:35:58,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:58,795 INFO L93 Difference]: Finished difference Result 6551 states and 8201 transitions. [2020-10-14 03:35:58,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 03:35:58,799 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 389 [2020-10-14 03:35:58,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:58,821 INFO L225 Difference]: With dead ends: 6551 [2020-10-14 03:35:58,821 INFO L226 Difference]: Without dead ends: 3925 [2020-10-14 03:35:58,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 03:35:58,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2020-10-14 03:35:58,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3901. [2020-10-14 03:35:58,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3901 states. [2020-10-14 03:35:58,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3901 states to 3901 states and 4692 transitions. [2020-10-14 03:35:58,954 INFO L78 Accepts]: Start accepts. Automaton has 3901 states and 4692 transitions. Word has length 389 [2020-10-14 03:35:58,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:58,955 INFO L479 AbstractCegarLoop]: Abstraction has 3901 states and 4692 transitions. [2020-10-14 03:35:58,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:35:58,956 INFO L276 IsEmpty]: Start isEmpty. Operand 3901 states and 4692 transitions. [2020-10-14 03:35:58,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-10-14 03:35:58,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:58,966 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:35:58,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:35:58,967 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:58,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:58,968 INFO L82 PathProgramCache]: Analyzing trace with hash -575987072, now seen corresponding path program 1 times [2020-10-14 03:35:58,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:58,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349563620] [2020-10-14 03:35:58,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:59,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:59,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:59,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:00,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:02,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:02,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:02,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-10-14 03:36:02,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:36:02,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3812 [2020-10-14 03:36:02,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:02,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:02,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:02,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:36:02,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 277 [2020-10-14 03:36:02,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:02,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:36:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:02,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:02,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:02,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:36:02,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:02,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:36:02,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:02,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:02,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:02,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:36:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:03,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:03,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:03,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:36:03,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:03,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 03:36:03,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:03,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:36:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:03,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:36:03,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:03,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:36:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:03,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:03,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:03,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:36:03,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:03,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-14 03:36:03,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:03,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:03,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:36:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-14 03:36:03,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:36:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:36:04,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349563620] [2020-10-14 03:36:04,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:36:04,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:36:04,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596026498] [2020-10-14 03:36:04,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:36:04,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:36:04,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:36:04,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:36:04,309 INFO L87 Difference]: Start difference. First operand 3901 states and 4692 transitions. Second operand 7 states. [2020-10-14 03:36:20,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:36:20,422 INFO L93 Difference]: Finished difference Result 9132 states and 11423 transitions. [2020-10-14 03:36:20,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:36:20,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 404 [2020-10-14 03:36:20,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:36:20,445 INFO L225 Difference]: With dead ends: 9132 [2020-10-14 03:36:20,445 INFO L226 Difference]: Without dead ends: 5187 [2020-10-14 03:36:20,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 03:36:20,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5187 states. [2020-10-14 03:36:20,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5187 to 5171. [2020-10-14 03:36:20,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5171 states. [2020-10-14 03:36:20,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 5848 transitions. [2020-10-14 03:36:20,584 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 5848 transitions. Word has length 404 [2020-10-14 03:36:20,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:36:20,585 INFO L479 AbstractCegarLoop]: Abstraction has 5171 states and 5848 transitions. [2020-10-14 03:36:20,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:36:20,585 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 5848 transitions. [2020-10-14 03:36:20,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-14 03:36:20,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:36:20,595 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:36:20,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:36:20,596 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:36:20,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:36:20,596 INFO L82 PathProgramCache]: Analyzing trace with hash -905051582, now seen corresponding path program 1 times [2020-10-14 03:36:20,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:36:20,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477127215] [2020-10-14 03:36:20,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:36:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:20,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:20,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:20,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:21,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:25,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:25,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 451 [2020-10-14 03:36:25,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:36:25,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 03:36:25,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:25,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:25,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:25,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:36:25,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:36:25,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:25,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:36:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:25,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:25,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:25,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:36:25,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:25,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:36:25,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:25,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:25,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:25,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:25,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:25,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:25,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:36:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:25,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:26,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:26,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:36:26,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:26,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-14 03:36:26,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:26,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:36:26,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:26,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:36:26,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:26,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:36:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:26,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:26,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:26,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:36:26,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:26,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 03:36:26,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:26,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:36:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:36:26,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:26,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-14 03:36:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:26,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:26,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:26,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:36:26,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:26,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 03:36:26,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:26,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 03:36:26,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:26,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:36:26,851 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 196 proven. 88 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 03:36:26,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477127215] [2020-10-14 03:36:26,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:36:26,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:36:26,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062683873] [2020-10-14 03:36:26,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:36:26,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:36:26,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:36:26,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:36:26,853 INFO L87 Difference]: Start difference. First operand 5171 states and 5848 transitions. Second operand 7 states. [2020-10-14 03:36:35,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:36:35,189 INFO L93 Difference]: Finished difference Result 11028 states and 12528 transitions. [2020-10-14 03:36:35,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:36:35,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 437 [2020-10-14 03:36:35,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:36:35,216 INFO L225 Difference]: With dead ends: 11028 [2020-10-14 03:36:35,216 INFO L226 Difference]: Without dead ends: 6170 [2020-10-14 03:36:35,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:36:35,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2020-10-14 03:36:35,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 6137. [2020-10-14 03:36:35,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6137 states. [2020-10-14 03:36:35,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6137 states to 6137 states and 6901 transitions. [2020-10-14 03:36:35,393 INFO L78 Accepts]: Start accepts. Automaton has 6137 states and 6901 transitions. Word has length 437 [2020-10-14 03:36:35,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:36:35,394 INFO L479 AbstractCegarLoop]: Abstraction has 6137 states and 6901 transitions. [2020-10-14 03:36:35,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:36:35,394 INFO L276 IsEmpty]: Start isEmpty. Operand 6137 states and 6901 transitions. [2020-10-14 03:36:35,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-14 03:36:35,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:36:35,401 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:36:35,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:36:35,402 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:36:35,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:36:35,403 INFO L82 PathProgramCache]: Analyzing trace with hash -795802182, now seen corresponding path program 1 times [2020-10-14 03:36:35,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:36:35,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760750349] [2020-10-14 03:36:35,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:36:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:35,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:36,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:36,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:40,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:40,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-14 03:36:40,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:36:40,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 03:36:40,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:40,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:40,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:40,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 380 [2020-10-14 03:36:40,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 03:36:40,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:40,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:36:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:40,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:40,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:40,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:36:40,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:40,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:36:40,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:40,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:40,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:40,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:36:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:40,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:40,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:40,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:36:40,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:40,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 03:36:40,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:40,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:40,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:40,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:40,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:40,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:36:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:40,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:41,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:41,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 03:36:41,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:41,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 03:36:41,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:41,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:41,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:36:41,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 03:36:41,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:41,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-14 03:36:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:41,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:41,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:41,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 03:36:41,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:41,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 03:36:41,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:41,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:36:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 03:36:41,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:36:41,426 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 253 proven. 2 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-14 03:36:41,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760750349] [2020-10-14 03:36:41,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:36:41,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:36:41,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192504727] [2020-10-14 03:36:41,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:36:41,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:36:41,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:36:41,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:36:41,428 INFO L87 Difference]: Start difference. First operand 6137 states and 6901 transitions. Second operand 7 states. [2020-10-14 03:36:52,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:36:52,266 INFO L93 Difference]: Finished difference Result 15940 states and 19134 transitions. [2020-10-14 03:36:52,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:36:52,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 488 [2020-10-14 03:36:52,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:36:52,338 INFO L225 Difference]: With dead ends: 15940 [2020-10-14 03:36:52,338 INFO L226 Difference]: Without dead ends: 10116 [2020-10-14 03:36:52,354 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 03:36:52,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10116 states. [2020-10-14 03:36:52,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10116 to 9940. [2020-10-14 03:36:52,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9940 states. [2020-10-14 03:36:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9940 states to 9940 states and 11157 transitions. [2020-10-14 03:36:52,613 INFO L78 Accepts]: Start accepts. Automaton has 9940 states and 11157 transitions. Word has length 488 [2020-10-14 03:36:52,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:36:52,614 INFO L479 AbstractCegarLoop]: Abstraction has 9940 states and 11157 transitions. [2020-10-14 03:36:52,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:36:52,614 INFO L276 IsEmpty]: Start isEmpty. Operand 9940 states and 11157 transitions. [2020-10-14 03:36:52,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-14 03:36:52,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:36:52,625 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:36:52,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:36:52,625 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:36:52,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:36:52,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1485140821, now seen corresponding path program 1 times [2020-10-14 03:36:52,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:36:52,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506818317] [2020-10-14 03:36:52,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:36:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:52,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:52,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:52,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:54,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:57,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:57,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-14 03:36:57,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:36:57,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 03:36:57,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:57,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:57,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:57,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 261 [2020-10-14 03:36:57,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:36:57,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:36:57,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:36:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:57,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:57,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:57,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:36:57,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:57,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:36:57,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:57,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:57,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:36:57,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:36:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:57,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:58,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:58,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:36:58,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:58,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 03:36:58,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:58,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:36:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:36:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-14 03:36:58,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:36:58,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:36:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:58,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:58,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:58,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:36:58,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:58,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 03:36:58,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:58,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:58,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:36:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:36:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:36:58,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:36:58,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-14 03:36:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:36:58,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:36:58,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:36:58,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:36:58,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:36:58,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 03:36:58,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:36:58,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:36:58,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:36:58,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 03:36:58,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:36:58,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:36:58,605 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 196 proven. 88 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 03:36:58,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506818317] [2020-10-14 03:36:58,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:36:58,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:36:58,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639332090] [2020-10-14 03:36:58,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:36:58,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:36:58,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:36:58,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:36:58,609 INFO L87 Difference]: Start difference. First operand 9940 states and 11157 transitions. Second operand 8 states. [2020-10-14 03:37:11,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:37:11,402 INFO L93 Difference]: Finished difference Result 22691 states and 25938 transitions. [2020-10-14 03:37:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 03:37:11,405 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 488 [2020-10-14 03:37:11,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:37:11,448 INFO L225 Difference]: With dead ends: 22691 [2020-10-14 03:37:11,448 INFO L226 Difference]: Without dead ends: 13064 [2020-10-14 03:37:11,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-14 03:37:11,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13064 states. [2020-10-14 03:37:11,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13064 to 12427. [2020-10-14 03:37:11,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12427 states. [2020-10-14 03:37:11,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12427 states to 12427 states and 14052 transitions. [2020-10-14 03:37:11,792 INFO L78 Accepts]: Start accepts. Automaton has 12427 states and 14052 transitions. Word has length 488 [2020-10-14 03:37:11,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:37:11,793 INFO L479 AbstractCegarLoop]: Abstraction has 12427 states and 14052 transitions. [2020-10-14 03:37:11,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:37:11,794 INFO L276 IsEmpty]: Start isEmpty. Operand 12427 states and 14052 transitions. [2020-10-14 03:37:11,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2020-10-14 03:37:11,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:37:11,808 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:37:11,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:37:11,809 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:37:11,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:37:11,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1186726571, now seen corresponding path program 1 times [2020-10-14 03:37:11,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:37:11,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428126978] [2020-10-14 03:37:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:37:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:12,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:12,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:12,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:13,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:15,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:15,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:15,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 525 [2020-10-14 03:37:15,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:37:15,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3942 [2020-10-14 03:37:15,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:15,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:15,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:15,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:37:15,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:37:15,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:16,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:37:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:16,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:16,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:16,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:37:16,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:16,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:37:16,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:16,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:16,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:16,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:16,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:16,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:16,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:37:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:16,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:16,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:16,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:37:16,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:16,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 03:37:16,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:16,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:16,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:37:16,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:16,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:37:16,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:16,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:37:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:16,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:16,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:16,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:37:16,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:16,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 03:37:16,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:16,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:37:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:37:16,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:16,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 03:37:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:16,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:16,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:16,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:37:16,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:16,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 03:37:16,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:16,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:16,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:16,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 03:37:16,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:16,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 196 proven. 88 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 03:37:17,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428126978] [2020-10-14 03:37:17,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:37:17,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:37:17,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609301536] [2020-10-14 03:37:17,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:37:17,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:37:17,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:37:17,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:37:17,024 INFO L87 Difference]: Start difference. First operand 12427 states and 14052 transitions. Second operand 7 states. [2020-10-14 03:37:26,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:37:26,662 INFO L93 Difference]: Finished difference Result 25349 states and 29573 transitions. [2020-10-14 03:37:26,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:37:26,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 511 [2020-10-14 03:37:26,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:37:26,728 INFO L225 Difference]: With dead ends: 25349 [2020-10-14 03:37:26,729 INFO L226 Difference]: Without dead ends: 13235 [2020-10-14 03:37:26,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:37:26,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13235 states. [2020-10-14 03:37:27,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13235 to 13047. [2020-10-14 03:37:27,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13047 states. [2020-10-14 03:37:27,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13047 states to 13047 states and 14686 transitions. [2020-10-14 03:37:27,079 INFO L78 Accepts]: Start accepts. Automaton has 13047 states and 14686 transitions. Word has length 511 [2020-10-14 03:37:27,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:37:27,080 INFO L479 AbstractCegarLoop]: Abstraction has 13047 states and 14686 transitions. [2020-10-14 03:37:27,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:37:27,080 INFO L276 IsEmpty]: Start isEmpty. Operand 13047 states and 14686 transitions. [2020-10-14 03:37:27,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2020-10-14 03:37:27,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:37:27,091 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:37:27,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:37:27,092 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:37:27,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:37:27,092 INFO L82 PathProgramCache]: Analyzing trace with hash 2093600995, now seen corresponding path program 1 times [2020-10-14 03:37:27,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:37:27,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193940310] [2020-10-14 03:37:27,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:37:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:27,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:27,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:27,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:28,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:30,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:32,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:32,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 537 [2020-10-14 03:37:32,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:37:32,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 03:37:32,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:32,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:32,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:32,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 03:37:32,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 03:37:32,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:32,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:37:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:32,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:32,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:32,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:37:32,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:32,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:37:32,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:32,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:32,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:32,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:32,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:32,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:37:32,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:37:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:32,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:32,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:32,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:37:32,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:32,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 03:37:32,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:32,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:32,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:32,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:37:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:32,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:32,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:32,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:37:32,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:32,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 03:37:32,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:32,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:37:32,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:32,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:37:32,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:32,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:37:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:32,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:32,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:32,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:37:32,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:32,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 03:37:32,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:32,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:32,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:32,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:37:32,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 03:37:32,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:33,033 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 03:37:33,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193940310] [2020-10-14 03:37:33,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:37:33,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:37:33,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667665081] [2020-10-14 03:37:33,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:37:33,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:37:33,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:37:33,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:37:33,036 INFO L87 Difference]: Start difference. First operand 13047 states and 14686 transitions. Second operand 7 states. [2020-10-14 03:37:53,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:37:53,857 INFO L93 Difference]: Finished difference Result 27340 states and 31659 transitions. [2020-10-14 03:37:53,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:37:53,860 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 523 [2020-10-14 03:37:53,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:37:53,933 INFO L225 Difference]: With dead ends: 27340 [2020-10-14 03:37:53,933 INFO L226 Difference]: Without dead ends: 16773 [2020-10-14 03:37:53,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:37:53,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16773 states. [2020-10-14 03:37:54,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16773 to 15517. [2020-10-14 03:37:54,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15517 states. [2020-10-14 03:37:54,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15517 states to 15517 states and 17855 transitions. [2020-10-14 03:37:54,341 INFO L78 Accepts]: Start accepts. Automaton has 15517 states and 17855 transitions. Word has length 523 [2020-10-14 03:37:54,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:37:54,343 INFO L479 AbstractCegarLoop]: Abstraction has 15517 states and 17855 transitions. [2020-10-14 03:37:54,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:37:54,343 INFO L276 IsEmpty]: Start isEmpty. Operand 15517 states and 17855 transitions. [2020-10-14 03:37:54,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2020-10-14 03:37:54,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:37:54,371 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:37:54,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:37:54,372 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:37:54,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:37:54,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1378927205, now seen corresponding path program 1 times [2020-10-14 03:37:54,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:37:54,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742467473] [2020-10-14 03:37:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:37:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:54,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:54,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:55,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:56,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:57,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:57,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 547 [2020-10-14 03:37:57,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:37:57,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2494 [2020-10-14 03:37:57,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:57,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:57,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:57,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 03:37:57,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 03:37:57,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:57,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:37:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:57,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:57,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:57,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:37:57,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:57,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:37:57,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:57,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:57,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:57,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:37:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:57,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:57,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:57,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:37:57,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:57,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 03:37:57,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:57,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:57,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:37:57,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:57,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:37:57,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:57,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:37:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:57,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:57,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:57,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:37:57,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:57,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 03:37:57,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:57,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:57,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:37:57,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:37:57,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:37:57,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:57,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:37:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:37:57,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:37:57,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:37:57,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 03:37:57,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:37:57,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 03:37:57,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:37:57,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:37:57,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:37:57,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:37:57,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 03:37:57,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:37:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 03:37:57,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742467473] [2020-10-14 03:37:57,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:37:57,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:37:57,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100373600] [2020-10-14 03:37:57,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:37:57,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:37:57,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:37:57,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:37:57,780 INFO L87 Difference]: Start difference. First operand 15517 states and 17855 transitions. Second operand 7 states. [2020-10-14 03:38:07,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:07,270 INFO L93 Difference]: Finished difference Result 34780 states and 40988 transitions. [2020-10-14 03:38:07,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:38:07,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 533 [2020-10-14 03:38:07,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:07,329 INFO L225 Difference]: With dead ends: 34780 [2020-10-14 03:38:07,330 INFO L226 Difference]: Without dead ends: 19554 [2020-10-14 03:38:07,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 03:38:07,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19554 states. [2020-10-14 03:38:07,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19554 to 19546. [2020-10-14 03:38:07,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19546 states. [2020-10-14 03:38:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19546 states to 19546 states and 22251 transitions. [2020-10-14 03:38:07,661 INFO L78 Accepts]: Start accepts. Automaton has 19546 states and 22251 transitions. Word has length 533 [2020-10-14 03:38:07,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:07,662 INFO L479 AbstractCegarLoop]: Abstraction has 19546 states and 22251 transitions. [2020-10-14 03:38:07,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:38:07,662 INFO L276 IsEmpty]: Start isEmpty. Operand 19546 states and 22251 transitions. [2020-10-14 03:38:07,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-10-14 03:38:07,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:07,676 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:38:07,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:38:07,676 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:07,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:07,677 INFO L82 PathProgramCache]: Analyzing trace with hash 44070277, now seen corresponding path program 1 times [2020-10-14 03:38:07,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:07,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287374789] [2020-10-14 03:38:07,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:07,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:08,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:08,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:11,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:12,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:12,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 570 [2020-10-14 03:38:12,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:38:12,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 03:38:12,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:12,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:12,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:12,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-14 03:38:12,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-14 03:38:12,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:12,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:12,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:12,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:12,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:12,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:12,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:38:12,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:12,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:12,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:12,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:13,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:13,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:13,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 03:38:13,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:13,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 03:38:13,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:13,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:13,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:13,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:13,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-14 03:38:13,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:13,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-14 03:38:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:13,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:13,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:13,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:38:13,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:13,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-14 03:38:13,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:13,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:13,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:13,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:38:13,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-14 03:38:13,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:38:14,220 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:38:14,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287374789] [2020-10-14 03:38:14,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:38:14,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:38:14,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751328268] [2020-10-14 03:38:14,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:38:14,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:14,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:38:14,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:38:14,223 INFO L87 Difference]: Start difference. First operand 19546 states and 22251 transitions. Second operand 7 states. [2020-10-14 03:38:27,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:27,676 INFO L93 Difference]: Finished difference Result 38765 states and 45910 transitions. [2020-10-14 03:38:27,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:38:27,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 558 [2020-10-14 03:38:27,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:27,766 INFO L225 Difference]: With dead ends: 38765 [2020-10-14 03:38:27,766 INFO L226 Difference]: Without dead ends: 21699 [2020-10-14 03:38:27,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:38:27,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21699 states. [2020-10-14 03:38:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21699 to 21107. [2020-10-14 03:38:28,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21107 states. [2020-10-14 03:38:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21107 states to 21107 states and 23944 transitions. [2020-10-14 03:38:28,243 INFO L78 Accepts]: Start accepts. Automaton has 21107 states and 23944 transitions. Word has length 558 [2020-10-14 03:38:28,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:28,244 INFO L479 AbstractCegarLoop]: Abstraction has 21107 states and 23944 transitions. [2020-10-14 03:38:28,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:38:28,244 INFO L276 IsEmpty]: Start isEmpty. Operand 21107 states and 23944 transitions. [2020-10-14 03:38:28,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2020-10-14 03:38:28,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:28,257 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:38:28,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:38:28,257 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:28,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:28,258 INFO L82 PathProgramCache]: Analyzing trace with hash 2125308261, now seen corresponding path program 1 times [2020-10-14 03:38:28,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:28,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656240435] [2020-10-14 03:38:28,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:28,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:29,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking...