/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 SingleStatement --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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:48:46,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:48:46,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:48:46,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:48:46,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:48:46,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:48:46,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:48:46,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:48:46,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:48:46,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:48:46,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:48:46,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:48:46,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:48:46,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:48:46,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:48:46,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:48:46,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:48:46,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:48:46,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:48:46,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:48:46,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:48:46,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:48:46,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:48:46,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:48:46,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:48:46,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:48:46,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:48:46,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:48:46,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:48:46,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:48:46,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:48:46,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:48:46,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:48:46,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:48:46,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:48:46,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:48:46,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:48:46,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:48:46,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:48:46,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:48:46,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:48:46,132 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 [2020-09-25 06:48:46,184 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:48:46,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:48:46,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:48:46,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:48:46,187 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:48:46,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:48:46,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:48:46,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:48:46,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:48:46,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:48:46,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:48:46,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:48:46,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:48:46,191 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:48:46,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:48:46,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:48:46,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:48:46,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:48:46,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:48:46,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:48:46,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:48:46,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:48:46,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:48:46,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:48:46,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:48:46,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:48:46,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:48:46,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:48:46,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:48:46,194 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 -> SingleStatement 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=0.6;log-additional-information=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=0.6;log-additional-information=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=0.6;log-additional-information=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=0.6;log-additional-information=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=0.6;log-additional-information=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=0.6;log-additional-information=true; [2020-09-25 06:48:46,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:48:46,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:48:46,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:48:46,700 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:48:46,700 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:48:46,702 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 06:48:46,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/982ad2ff2/94a277cad8e24446ace2bb5c8db69288/FLAGf155ccb23 [2020-09-25 06:48:47,531 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:48:47,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 06:48:47,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/982ad2ff2/94a277cad8e24446ace2bb5c8db69288/FLAGf155ccb23 [2020-09-25 06:48:47,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/982ad2ff2/94a277cad8e24446ace2bb5c8db69288 [2020-09-25 06:48:47,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:48:47,774 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:48:47,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:47,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:48:47,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:48:47,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:47" (1/1) ... [2020-09-25 06:48:47,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43afbb5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:47, skipping insertion in model container [2020-09-25 06:48:47,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:47" (1/1) ... [2020-09-25 06:48:47,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:48:47,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:48:48,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:48,558 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:48:48,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:48,785 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:48:48,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:48 WrapperNode [2020-09-25 06:48:48,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:48,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:48:48,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:48:48,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:48:48,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:48" (1/1) ... [2020-09-25 06:48:48,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:48" (1/1) ... [2020-09-25 06:48:48,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:48" (1/1) ... [2020-09-25 06:48:48,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:48" (1/1) ... [2020-09-25 06:48:48,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:48" (1/1) ... [2020-09-25 06:48:48,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:48" (1/1) ... [2020-09-25 06:48:48,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:48" (1/1) ... [2020-09-25 06:48:48,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:48:48,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:48:48,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:48:48,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:48:48,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:48" (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 [2020-09-25 06:48:49,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:48:49,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:48:49,114 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:48:49,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:48:49,114 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:48:49,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:48:49,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:48:49,117 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:48:49,117 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:48:49,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:48:49,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:48:51,035 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:48:51,036 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:48:51,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:51 BoogieIcfgContainer [2020-09-25 06:48:51,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:48:51,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:48:51,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:48:51,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:48:51,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:48:47" (1/3) ... [2020-09-25 06:48:51,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d1724c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:51, skipping insertion in model container [2020-09-25 06:48:51,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:48" (2/3) ... [2020-09-25 06:48:51,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d1724c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:51, skipping insertion in model container [2020-09-25 06:48:51,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:51" (3/3) ... [2020-09-25 06:48:51,056 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label01.c [2020-09-25 06:48:51,068 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:48:51,080 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:48:51,103 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:48:51,137 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:48:51,138 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:48:51,138 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:48:51,138 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:48:51,138 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:48:51,138 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:48:51,138 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:48:51,139 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:48:51,173 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 06:48:51,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 06:48:51,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:51,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:48:51,187 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:51,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:51,193 INFO L82 PathProgramCache]: Analyzing trace with hash -899775614, now seen corresponding path program 1 times [2020-09-25 06:48:51,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:51,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3063694] [2020-09-25 06:48:51,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:51,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:51,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:52,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:52,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 06:48:52,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:48:52,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-09-25 06:48:52,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:52,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:52,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:52,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:48:52,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 06:48:52,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:48:52,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:52,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:52,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:52,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:52,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:52,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:48:52,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:52,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:52,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:52,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:52,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:48:52,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:52,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:52,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3063694] [2020-09-25 06:48:52,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:52,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:48:52,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555557250] [2020-09-25 06:48:52,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:48:52,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:52,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:48:52,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:48:52,334 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 06:48:56,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:56,496 INFO L93 Difference]: Finished difference Result 1991 states and 2714 transitions. [2020-09-25 06:48:56,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:48:56,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-09-25 06:48:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:56,531 INFO L225 Difference]: With dead ends: 1991 [2020-09-25 06:48:56,532 INFO L226 Difference]: Without dead ends: 1250 [2020-09-25 06:48:56,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:56,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-09-25 06:48:56,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 997. [2020-09-25 06:48:56,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 06:48:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1236 transitions. [2020-09-25 06:48:56,672 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1236 transitions. Word has length 73 [2020-09-25 06:48:56,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:56,673 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1236 transitions. [2020-09-25 06:48:56,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:48:56,673 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1236 transitions. [2020-09-25 06:48:56,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 06:48:56,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:56,685 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:48:56,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:48:56,685 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:56,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:56,686 INFO L82 PathProgramCache]: Analyzing trace with hash -893839862, now seen corresponding path program 1 times [2020-09-25 06:48:56,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:56,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092822897] [2020-09-25 06:48:56,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:56,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:57,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:57,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:57,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:57,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:59,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:00,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:00,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 06:49:00,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:49:00,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3622 [2020-09-25 06:49:00,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:00,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:49:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:49:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 06:49:00,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:00,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:00,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:00,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:00,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:00,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:00,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:49:00,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:00,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:49:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:00,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:00,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:00,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 06:49:00,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:00,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 06:49:00,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:00,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:00,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:00,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:00,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 06:49:00,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:49:00,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092822897] [2020-09-25 06:49:00,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:49:00,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:49:00,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461734230] [2020-09-25 06:49:00,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:00,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:00,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:00,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:00,751 INFO L87 Difference]: Start difference. First operand 997 states and 1236 transitions. Second operand 7 states. [2020-09-25 06:49:04,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:04,115 INFO L93 Difference]: Finished difference Result 2728 states and 3594 transitions. [2020-09-25 06:49:04,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:49:04,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-09-25 06:49:04,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:04,135 INFO L225 Difference]: With dead ends: 2728 [2020-09-25 06:49:04,135 INFO L226 Difference]: Without dead ends: 1746 [2020-09-25 06:49:04,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:49:04,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2020-09-25 06:49:04,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1602. [2020-09-25 06:49:04,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1602 states. [2020-09-25 06:49:04,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 1981 transitions. [2020-09-25 06:49:04,242 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 1981 transitions. Word has length 160 [2020-09-25 06:49:04,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:04,245 INFO L479 AbstractCegarLoop]: Abstraction has 1602 states and 1981 transitions. [2020-09-25 06:49:04,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:04,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 1981 transitions. [2020-09-25 06:49:04,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 06:49:04,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:04,261 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 06:49:04,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:49:04,262 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:04,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:04,262 INFO L82 PathProgramCache]: Analyzing trace with hash 760434101, now seen corresponding path program 1 times [2020-09-25 06:49:04,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:04,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190190925] [2020-09-25 06:49:04,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:04,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:04,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:04,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:04,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:06,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:06,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:09,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:09,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:09,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 06:49:09,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:49:09,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 06:49:09,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:09,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:09,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 06:49:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-25 06:49:09,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 06:49:09,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:09,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:09,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:09,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:09,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:09,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:49:09,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:09,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:09,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:09,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:09,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:09,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:09,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:09,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:09,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:09,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:49:09,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:09,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 06:49:09,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:09,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:09,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 06:49:09,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:09,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 06:49:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:09,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:09,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:09,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 06:49:09,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:09,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 06:49:09,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:09,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:09,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:09,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:09,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 06:49:09,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:49:09,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190190925] [2020-09-25 06:49:09,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:09,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:49:09,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466895996] [2020-09-25 06:49:09,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:09,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:09,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:09,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:09,886 INFO L87 Difference]: Start difference. First operand 1602 states and 1981 transitions. Second operand 7 states. [2020-09-25 06:49:13,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:13,348 INFO L93 Difference]: Finished difference Result 3844 states and 4902 transitions. [2020-09-25 06:49:13,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:49:13,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-09-25 06:49:13,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:13,364 INFO L225 Difference]: With dead ends: 3844 [2020-09-25 06:49:13,365 INFO L226 Difference]: Without dead ends: 2062 [2020-09-25 06:49:13,372 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 [2020-09-25 06:49:13,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2020-09-25 06:49:13,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 2002. [2020-09-25 06:49:13,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2002 states. [2020-09-25 06:49:13,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 2409 transitions. [2020-09-25 06:49:13,430 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 2409 transitions. Word has length 242 [2020-09-25 06:49:13,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:13,432 INFO L479 AbstractCegarLoop]: Abstraction has 2002 states and 2409 transitions. [2020-09-25 06:49:13,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:13,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 2409 transitions. [2020-09-25 06:49:13,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 06:49:13,447 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:13,448 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 06:49:13,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:49:13,448 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:13,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:13,448 INFO L82 PathProgramCache]: Analyzing trace with hash -303069568, now seen corresponding path program 1 times [2020-09-25 06:49:13,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:13,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119941640] [2020-09-25 06:49:13,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:13,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:13,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:13,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:13,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:14,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:14,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:16,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:18,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-25 06:49:18,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:49:18,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 06:49:18,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:18,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:18,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:49:18,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 06:49:18,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 06:49:18,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:18,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:18,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:18,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:18,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:18,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:49:18,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:18,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:18,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:18,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:49:18,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:18,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:18,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:49:18,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:18,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 06:49:18,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:18,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:18,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:49:18,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:18,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 06:49:18,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:18,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 06:49:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:18,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:18,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 06:49:18,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:18,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 06:49:18,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:18,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 06:49:18,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:19,167 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:49:19,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119941640] [2020-09-25 06:49:19,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:19,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:49:19,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030554512] [2020-09-25 06:49:19,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:49:19,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:19,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:49:19,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:49:19,173 INFO L87 Difference]: Start difference. First operand 2002 states and 2409 transitions. Second operand 8 states. [2020-09-25 06:49:24,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:24,050 INFO L93 Difference]: Finished difference Result 4471 states and 5437 transitions. [2020-09-25 06:49:24,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 06:49:24,051 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 249 [2020-09-25 06:49:24,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:24,061 INFO L225 Difference]: With dead ends: 4471 [2020-09-25 06:49:24,061 INFO L226 Difference]: Without dead ends: 1900 [2020-09-25 06:49:24,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:49:24,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2020-09-25 06:49:24,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1741. [2020-09-25 06:49:24,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1741 states. [2020-09-25 06:49:24,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 1888 transitions. [2020-09-25 06:49:24,111 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 1888 transitions. Word has length 249 [2020-09-25 06:49:24,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:24,112 INFO L479 AbstractCegarLoop]: Abstraction has 1741 states and 1888 transitions. [2020-09-25 06:49:24,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:49:24,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 1888 transitions. [2020-09-25 06:49:24,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-09-25 06:49:24,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:24,119 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:49:24,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:49:24,120 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:24,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:24,120 INFO L82 PathProgramCache]: Analyzing trace with hash -505865555, now seen corresponding path program 1 times [2020-09-25 06:49:24,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:24,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790729832] [2020-09-25 06:49:24,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:24,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:24,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:24,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:26,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:27,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:29,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:29,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-09-25 06:49:29,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:49:29,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:49:29,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:29,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:29,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:29,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-25 06:49:29,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-09-25 06:49:29,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:49:29,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:29,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:29,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:29,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:29,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:29,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:49:29,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:29,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:29,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:29,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:29,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:29,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:29,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 06:49:29,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:29,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 06:49:29,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:29,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:29,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 06:49:29,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:29,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 06:49:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:29,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:29,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:29,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 06:49:29,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:29,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-09-25 06:49:29,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:29,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:29,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:29,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:29,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-25 06:49:29,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:30,405 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:49:30,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790729832] [2020-09-25 06:49:30,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:30,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:49:30,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771555943] [2020-09-25 06:49:30,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:30,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:30,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:30,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:30,410 INFO L87 Difference]: Start difference. First operand 1741 states and 1888 transitions. Second operand 7 states. [2020-09-25 06:49:32,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:32,662 INFO L93 Difference]: Finished difference Result 4270 states and 4693 transitions. [2020-09-25 06:49:32,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:49:32,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 380 [2020-09-25 06:49:32,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:32,673 INFO L225 Difference]: With dead ends: 4270 [2020-09-25 06:49:32,674 INFO L226 Difference]: Without dead ends: 2544 [2020-09-25 06:49:32,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:49:32,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2020-09-25 06:49:32,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2322. [2020-09-25 06:49:32,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2322 states. [2020-09-25 06:49:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 2505 transitions. [2020-09-25 06:49:32,727 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 2505 transitions. Word has length 380 [2020-09-25 06:49:32,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:32,728 INFO L479 AbstractCegarLoop]: Abstraction has 2322 states and 2505 transitions. [2020-09-25 06:49:32,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:32,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 2505 transitions. [2020-09-25 06:49:32,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2020-09-25 06:49:32,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:32,740 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:49:32,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:49:32,740 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:32,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:32,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1540699335, now seen corresponding path program 1 times [2020-09-25 06:49:32,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:32,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810638348] [2020-09-25 06:49:32,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:32,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:33,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:33,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:33,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking...