/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:25:24,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:25:24,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:25:25,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:25:25,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:25:25,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:25:25,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:25:25,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:25:25,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:25:25,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:25:25,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:25:25,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:25:25,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:25:25,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:25:25,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:25:25,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:25:25,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:25:25,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:25:25,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:25:25,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:25:25,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:25:25,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:25:25,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:25:25,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:25:25,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:25:25,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:25:25,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:25:25,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:25:25,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:25:25,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:25:25,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:25:25,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:25:25,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:25:25,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:25:25,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:25:25,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:25:25,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:25:25,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:25:25,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:25:25,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:25:25,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:25:25,062 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 05:25:25,090 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:25:25,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:25:25,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:25:25,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:25:25,092 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:25:25,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:25:25,092 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:25:25,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:25:25,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:25:25,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:25:25,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:25:25,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:25:25,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:25:25,094 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:25:25,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:25:25,094 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:25:25,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:25:25,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:25:25,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:25:25,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:25:25,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:25:25,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:25:25,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:25:25,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:25:25,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:25:25,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:25:25,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:25:25,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:25:25,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:25:25,097 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:25:25,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:25:25,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:25:25,618 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:25:25,619 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:25:25,621 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:25:25,622 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2020-09-25 05:25:25,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6caab293/c8264e11be9c45b3b4cbadb6b7022ef7/FLAG0166a803b [2020-09-25 05:25:26,188 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:25:26,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2020-09-25 05:25:26,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6caab293/c8264e11be9c45b3b4cbadb6b7022ef7/FLAG0166a803b [2020-09-25 05:25:26,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6caab293/c8264e11be9c45b3b4cbadb6b7022ef7 [2020-09-25 05:25:26,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:25:26,569 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:25:26,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:25:26,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:25:26,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:25:26,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:25:26" (1/1) ... [2020-09-25 05:25:26,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78523b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:26, skipping insertion in model container [2020-09-25 05:25:26,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:25:26" (1/1) ... [2020-09-25 05:25:26,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:25:26,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:25:27,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:25:27,017 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:25:27,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:25:27,084 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:25:27,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:27 WrapperNode [2020-09-25 05:25:27,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:25:27,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:25:27,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:25:27,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:25:27,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:27" (1/1) ... [2020-09-25 05:25:27,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:27" (1/1) ... [2020-09-25 05:25:27,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:27" (1/1) ... [2020-09-25 05:25:27,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:27" (1/1) ... [2020-09-25 05:25:27,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:27" (1/1) ... [2020-09-25 05:25:27,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:27" (1/1) ... [2020-09-25 05:25:27,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:27" (1/1) ... [2020-09-25 05:25:27,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:25:27,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:25:27,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:25:27,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:25:27,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:27" (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 05:25:27,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:25:27,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:25:27,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 05:25:27,284 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-25 05:25:27,284 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-25 05:25:27,284 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-25 05:25:27,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:25:27,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:25:27,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 05:25:27,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 05:25:27,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 05:25:27,286 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-25 05:25:27,286 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-25 05:25:27,286 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-25 05:25:27,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:25:27,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:25:27,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:25:27,861 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:25:27,862 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 05:25:27,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:25:27 BoogieIcfgContainer [2020-09-25 05:25:27,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:25:27,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:25:27,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:25:27,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:25:27,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:25:26" (1/3) ... [2020-09-25 05:25:27,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7379d060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:25:27, skipping insertion in model container [2020-09-25 05:25:27,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:27" (2/3) ... [2020-09-25 05:25:27,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7379d060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:25:27, skipping insertion in model container [2020-09-25 05:25:27,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:25:27" (3/3) ... [2020-09-25 05:25:27,878 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2020-09-25 05:25:27,889 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:25:27,898 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:25:27,918 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:25:27,948 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:25:27,948 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:25:27,949 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:25:27,949 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:25:27,949 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:25:27,949 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:25:27,949 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:25:27,950 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:25:27,975 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-09-25 05:25:27,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 05:25:27,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:27,991 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:27,991 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:27,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:27,998 INFO L82 PathProgramCache]: Analyzing trace with hash -2062280112, now seen corresponding path program 1 times [2020-09-25 05:25:28,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:28,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671340411] [2020-09-25 05:25:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:28,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:28,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:29,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:29,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:29,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 05:25:29,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:25:29,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1803 [2020-09-25 05:25:29,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:29,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:29,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:25:29,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-25 05:25:29,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:25:29,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:25:30,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:30,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:30,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:30,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:30,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:30,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:30,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:30,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:30,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:30,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:25:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:30,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:30,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:30,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:30,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:30,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:25:30,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:30,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:30,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:30,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:30,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:30,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:30,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:25:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:30,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:30,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:30,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:30,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:30,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:30,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:25:30,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:30,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:30,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:30,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:30,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:30,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:30,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 05:25:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:30,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:30,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:30,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:30,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:30,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:25:30,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:30,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:30,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:30,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:30,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:30,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:25:30,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 05:25:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:30,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:30,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:30,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:30,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:30,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:25:30,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:30,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:30,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:30,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:30,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:30,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:25:30,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 05:25:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:30,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:30,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:30,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:25:30,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:30,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:25:30,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:30,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:30,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:25:30,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:30,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:25:30,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 05:25:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-09-25 05:25:30,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671340411] [2020-09-25 05:25:30,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:25:30,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:25:30,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220050983] [2020-09-25 05:25:30,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:25:30,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:30,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:25:30,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:25:30,246 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 3 states. [2020-09-25 05:25:30,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:30,336 INFO L93 Difference]: Finished difference Result 253 states and 309 transitions. [2020-09-25 05:25:30,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:25:30,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-09-25 05:25:30,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:30,358 INFO L225 Difference]: With dead ends: 253 [2020-09-25 05:25:30,358 INFO L226 Difference]: Without dead ends: 126 [2020-09-25 05:25:30,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:25:30,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-25 05:25:30,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-09-25 05:25:30,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-25 05:25:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2020-09-25 05:25:30,465 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 100 [2020-09-25 05:25:30,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:30,472 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2020-09-25 05:25:30,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:25:30,474 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2020-09-25 05:25:30,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 05:25:30,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:30,483 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:30,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:25:30,486 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:30,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:30,488 INFO L82 PathProgramCache]: Analyzing trace with hash -2043535721, now seen corresponding path program 1 times [2020-09-25 05:25:30,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:30,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808247322] [2020-09-25 05:25:30,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:30,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:30,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:31,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:31,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:31,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:35,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:35,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 05:25:35,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:25:35,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:25:35,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:35,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:25:35,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-09-25 05:25:35,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:25:35,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:25:35,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:35,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:35,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:35,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:35,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:35,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:35,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:35,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:35,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:35,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:35,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:35,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:35,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:25:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:35,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:35,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:35,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:35,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:35,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:35,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:35,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:35,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:35,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:25:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:35,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:35,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:35,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:35,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:35,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:35,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:25:35,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:35,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:35,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:35,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:35,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:35,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:25:35,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 05:25:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:35,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:35,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:35,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:35,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:35,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:35,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:35,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:35,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:35,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:35,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:35,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 05:25:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:35,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:35,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:35,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:35,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:35,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:35,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:35,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:35,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:35,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:35,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:35,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:35,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 05:25:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:35,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:35,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:35,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:25:35,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:35,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:25:35,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:35,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:35,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:25:35,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:25:35,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:35,717 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-09-25 05:25:35,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808247322] [2020-09-25 05:25:35,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:25:35,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:25:35,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384244850] [2020-09-25 05:25:35,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:25:35,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:35,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:25:35,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:25:35,722 INFO L87 Difference]: Start difference. First operand 126 states and 144 transitions. Second operand 4 states. [2020-09-25 05:25:35,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:35,762 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2020-09-25 05:25:35,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:25:35,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-09-25 05:25:35,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:35,766 INFO L225 Difference]: With dead ends: 142 [2020-09-25 05:25:35,766 INFO L226 Difference]: Without dead ends: 125 [2020-09-25 05:25:35,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:25:35,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-25 05:25:35,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-09-25 05:25:35,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 05:25:35,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 142 transitions. [2020-09-25 05:25:35,779 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 142 transitions. Word has length 102 [2020-09-25 05:25:35,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:35,779 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 142 transitions. [2020-09-25 05:25:35,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:25:35,780 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 142 transitions. [2020-09-25 05:25:35,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 05:25:35,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:35,782 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:35,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:25:35,783 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:35,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:35,783 INFO L82 PathProgramCache]: Analyzing trace with hash -728440265, now seen corresponding path program 1 times [2020-09-25 05:25:35,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:35,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116631491] [2020-09-25 05:25:35,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:35,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:35,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:35,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:37,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:37,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 05:25:37,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:25:37,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1792 [2020-09-25 05:25:37,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:37,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:37,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:25:37,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:25:37,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:25:37,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:37,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:37,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:37,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:37,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:37,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:37,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:37,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:37,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:37,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:37,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:25:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:37,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:37,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:37,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:37,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:37,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:37,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:37,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:37,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:37,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:25:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:37,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:37,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:37,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:37,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:37,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:25:37,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:37,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:25:37,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:25:37,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:25:37,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:25:37,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 05:25:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:37,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:37,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:37,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:37,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:37,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:25:37,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:37,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:37,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:37,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 05:25:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:37,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:37,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:37,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:37,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:37,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:37,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:37,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:37,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:37,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:37,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:37,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:37,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 05:25:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:37,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:37,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:37,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:25:37,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:37,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:25:37,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:37,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:25:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:37,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:37,767 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 05:25:37,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116631491] [2020-09-25 05:25:37,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:37,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 05:25:37,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515566058] [2020-09-25 05:25:37,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:25:37,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:37,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:25:37,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:25:37,770 INFO L87 Difference]: Start difference. First operand 125 states and 142 transitions. Second operand 4 states. [2020-09-25 05:25:37,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:37,913 INFO L93 Difference]: Finished difference Result 276 states and 324 transitions. [2020-09-25 05:25:37,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:25:37,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-09-25 05:25:37,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:37,918 INFO L225 Difference]: With dead ends: 276 [2020-09-25 05:25:37,918 INFO L226 Difference]: Without dead ends: 179 [2020-09-25 05:25:37,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:25:37,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-09-25 05:25:37,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 159. [2020-09-25 05:25:37,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-25 05:25:37,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2020-09-25 05:25:37,938 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 102 [2020-09-25 05:25:37,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:37,939 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2020-09-25 05:25:37,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:25:37,939 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2020-09-25 05:25:37,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-25 05:25:37,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:37,941 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:37,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:25:37,942 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:37,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:37,942 INFO L82 PathProgramCache]: Analyzing trace with hash 174556480, now seen corresponding path program 1 times [2020-09-25 05:25:37,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:37,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328187050] [2020-09-25 05:25:37,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:37,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:38,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:38,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:39,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:39,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 05:25:39,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:25:39,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1809 [2020-09-25 05:25:39,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:39,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:39,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:25:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:25:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:25:39,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:39,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:39,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:39,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:39,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:39,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:39,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:39,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:39,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:39,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:39,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:39,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:39,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:39,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:25:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:39,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:39,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:39,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:39,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:39,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:39,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:39,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:39,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:39,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:39,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:25:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:39,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:39,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:39,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:25:39,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:39,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:25:39,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:39,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:39,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:25:39,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 05:25:39,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:25:39,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:39,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:25:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:39,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:39,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:39,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:39,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:39,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:39,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:39,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:39,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:39,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:39,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:39,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:39,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 05:25:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:39,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:39,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:39,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:39,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:39,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:39,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:39,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:39,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:39,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:39,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 05:25:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:39,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:39,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:39,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:25:39,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:39,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:25:39,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:39,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:25:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:39,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:39,891 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 05:25:39,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328187050] [2020-09-25 05:25:39,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:39,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 05:25:39,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834183432] [2020-09-25 05:25:39,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:25:39,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:39,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:25:39,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:25:39,896 INFO L87 Difference]: Start difference. First operand 159 states and 186 transitions. Second operand 4 states. [2020-09-25 05:25:39,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:39,995 INFO L93 Difference]: Finished difference Result 285 states and 334 transitions. [2020-09-25 05:25:39,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:25:39,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-09-25 05:25:39,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:39,998 INFO L225 Difference]: With dead ends: 285 [2020-09-25 05:25:39,998 INFO L226 Difference]: Without dead ends: 178 [2020-09-25 05:25:39,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:25:40,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-25 05:25:40,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 164. [2020-09-25 05:25:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-25 05:25:40,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 192 transitions. [2020-09-25 05:25:40,037 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 192 transitions. Word has length 105 [2020-09-25 05:25:40,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:40,038 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 192 transitions. [2020-09-25 05:25:40,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:25:40,038 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 192 transitions. [2020-09-25 05:25:40,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-25 05:25:40,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:40,040 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:40,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:25:40,040 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:40,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:40,042 INFO L82 PathProgramCache]: Analyzing trace with hash 411384115, now seen corresponding path program 1 times [2020-09-25 05:25:40,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:40,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721343268] [2020-09-25 05:25:40,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:40,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:40,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:40,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:40,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:40,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:43,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:43,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 05:25:43,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:25:43,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3036 [2020-09-25 05:25:43,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:43,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:25:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:25:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:25:43,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:43,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:43,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:43,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:43,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:43,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:43,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:43,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:43,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:43,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:43,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:25:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:43,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:43,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:43,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:43,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:43,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:43,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:43,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:43,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:43,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:25:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:43,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:43,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:43,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:43,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:43,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:25:43,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:25:43,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 05:25:43,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:43,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:43,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:25:43,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:25:43,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:25:43,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:43,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 05:25:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:43,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:43,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:43,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:43,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:43,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:43,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:43,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:43,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:43,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:43,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:43,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:43,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-25 05:25:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:43,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:43,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:43,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:43,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:43,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:43,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:43,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:43,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:43,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 05:25:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:43,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:43,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:43,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:25:43,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:43,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:25:43,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:43,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:43,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:43,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:25:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:43,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:43,275 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 05:25:43,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721343268] [2020-09-25 05:25:43,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:43,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 05:25:43,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131967768] [2020-09-25 05:25:43,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:25:43,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:43,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:25:43,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:25:43,278 INFO L87 Difference]: Start difference. First operand 164 states and 192 transitions. Second operand 4 states. [2020-09-25 05:25:43,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:43,432 INFO L93 Difference]: Finished difference Result 302 states and 354 transitions. [2020-09-25 05:25:43,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:25:43,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-09-25 05:25:43,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:43,435 INFO L225 Difference]: With dead ends: 302 [2020-09-25 05:25:43,435 INFO L226 Difference]: Without dead ends: 173 [2020-09-25 05:25:43,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:25:43,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-09-25 05:25:43,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 161. [2020-09-25 05:25:43,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-25 05:25:43,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 186 transitions. [2020-09-25 05:25:43,455 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 186 transitions. Word has length 106 [2020-09-25 05:25:43,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:43,456 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 186 transitions. [2020-09-25 05:25:43,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:25:43,456 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 186 transitions. [2020-09-25 05:25:43,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 05:25:43,457 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:43,458 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:43,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:25:43,458 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:43,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:43,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1053175091, now seen corresponding path program 1 times [2020-09-25 05:25:43,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:43,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066009896] [2020-09-25 05:25:43,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:43,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:43,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:43,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:45,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:45,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 05:25:45,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:25:45,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1651 [2020-09-25 05:25:45,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:45,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:45,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:25:45,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:25:45,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:25:45,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:45,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:45,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:45,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:45,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:45,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:45,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:45,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:45,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:45,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:45,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:25:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:45,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:45,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:45,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:45,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:45,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:45,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:45,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:45,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:45,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:45,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:45,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:45,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:25:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:45,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:45,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:45,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:25:45,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:45,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:25:45,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:45,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:25:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:25:45,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:25:45,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:45,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 05:25:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:45,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:45,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:45,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:45,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:45,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:45,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:45,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:45,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:45,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:45,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:45,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:45,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 05:25:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:45,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:45,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:45,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:45,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:45,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:45,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:45,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:45,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:45,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 05:25:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:45,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:45,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:45,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:25:45,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:45,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:25:45,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:45,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:45,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:45,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:25:45,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:45,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:45,275 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 05:25:45,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066009896] [2020-09-25 05:25:45,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:45,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 05:25:45,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026238581] [2020-09-25 05:25:45,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:25:45,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:45,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:25:45,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:25:45,278 INFO L87 Difference]: Start difference. First operand 161 states and 186 transitions. Second operand 4 states. [2020-09-25 05:25:45,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:45,402 INFO L93 Difference]: Finished difference Result 297 states and 346 transitions. [2020-09-25 05:25:45,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:25:45,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-09-25 05:25:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:45,405 INFO L225 Difference]: With dead ends: 297 [2020-09-25 05:25:45,405 INFO L226 Difference]: Without dead ends: 175 [2020-09-25 05:25:45,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:25:45,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-09-25 05:25:45,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 157. [2020-09-25 05:25:45,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-25 05:25:45,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2020-09-25 05:25:45,423 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 107 [2020-09-25 05:25:45,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:45,425 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2020-09-25 05:25:45,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:25:45,425 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2020-09-25 05:25:45,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 05:25:45,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:45,430 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-09-25 05:25:45,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:25:45,431 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:45,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:45,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1153920056, now seen corresponding path program 1 times [2020-09-25 05:25:45,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:45,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41259781] [2020-09-25 05:25:45,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:45,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:45,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:47,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:47,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 05:25:47,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:25:47,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2192 [2020-09-25 05:25:47,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:47,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:47,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:25:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:25:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 05:25:47,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:47,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:47,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:47,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:47,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:47,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:47,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:47,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:47,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:47,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:25:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:47,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:47,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:47,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:47,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:25:47,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:47,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:25:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:25:47,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:47,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:25:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:47,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:47,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:47,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:47,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:25:47,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:47,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 05:25:47,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:47,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:47,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:25:47,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:47,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:25:47,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:47,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 05:25:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:47,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:47,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:47,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:47,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:47,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:25:47,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:47,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:47,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:25:47,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:47,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:25:47,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:47,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 05:25:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:47,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:47,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:47,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:47,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:25:47,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:47,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:25:47,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:47,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:25:47,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:47,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 05:25:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:47,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:47,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:47,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:25:47,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:47,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:25:47,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:47,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:47,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:25:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:25:47,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-09-25 05:25:47,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41259781] [2020-09-25 05:25:47,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:47,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:25:47,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287273800] [2020-09-25 05:25:47,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:25:47,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:47,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:25:47,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:25:47,922 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand 6 states. [2020-09-25 05:25:48,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:48,017 INFO L93 Difference]: Finished difference Result 197 states and 237 transitions. [2020-09-25 05:25:48,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:25:48,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2020-09-25 05:25:48,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:48,021 INFO L225 Difference]: With dead ends: 197 [2020-09-25 05:25:48,021 INFO L226 Difference]: Without dead ends: 191 [2020-09-25 05:25:48,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:25:48,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-09-25 05:25:48,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 180. [2020-09-25 05:25:48,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-09-25 05:25:48,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 211 transitions. [2020-09-25 05:25:48,040 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 211 transitions. Word has length 110 [2020-09-25 05:25:48,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:48,040 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 211 transitions. [2020-09-25 05:25:48,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:25:48,041 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 211 transitions. [2020-09-25 05:25:48,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 05:25:48,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:48,043 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-09-25 05:25:48,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:25:48,043 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:48,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:48,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1005724545, now seen corresponding path program 1 times [2020-09-25 05:25:48,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:48,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341093177] [2020-09-25 05:25:48,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:48,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:48,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:48,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:48,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 05:25:48,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:48,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-09-25 05:25:48,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:48,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:48,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:25:48,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:25:48,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:25:48,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:48,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:48,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:48,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:48,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:48,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:48,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:48,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:48,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:48,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:48,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:48,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:48,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:25:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:48,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:48,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:48,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:48,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:48,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:48,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:48,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:48,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:48,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:25:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:48,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:48,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:48,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:25:48,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:48,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 05:25:48,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:48,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:25:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 05:25:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:25:48,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:48,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 05:25:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:48,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:48,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:48,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:48,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:48,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:48,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:48,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:48,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:48,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:48,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:48,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:48,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 05:25:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:48,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:48,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:48,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:48,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:48,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:48,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:48,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:48,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:48,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:48,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:48,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:48,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 05:25:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:48,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:48,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:48,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:25:48,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:48,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:48,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:48,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:48,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:48,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:25:48,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:48,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:48,603 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 05:25:48,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341093177] [2020-09-25 05:25:48,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:48,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:25:48,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543175707] [2020-09-25 05:25:48,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:25:48,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:48,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:25:48,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:25:48,606 INFO L87 Difference]: Start difference. First operand 180 states and 211 transitions. Second operand 5 states. [2020-09-25 05:25:48,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:48,716 INFO L93 Difference]: Finished difference Result 344 states and 418 transitions. [2020-09-25 05:25:48,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:25:48,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-09-25 05:25:48,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:48,719 INFO L225 Difference]: With dead ends: 344 [2020-09-25 05:25:48,719 INFO L226 Difference]: Without dead ends: 211 [2020-09-25 05:25:48,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:25:48,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-09-25 05:25:48,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 190. [2020-09-25 05:25:48,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-25 05:25:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 224 transitions. [2020-09-25 05:25:48,746 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 224 transitions. Word has length 112 [2020-09-25 05:25:48,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:48,746 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 224 transitions. [2020-09-25 05:25:48,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:25:48,746 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 224 transitions. [2020-09-25 05:25:48,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 05:25:48,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:48,750 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:48,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:25:48,751 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:48,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:48,751 INFO L82 PathProgramCache]: Analyzing trace with hash -252615503, now seen corresponding path program 1 times [2020-09-25 05:25:48,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:48,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41998262] [2020-09-25 05:25:48,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:48,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:48,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:49,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:49,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 05:25:49,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:49,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-09-25 05:25:49,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:49,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:25:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:25:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:25:49,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:49,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:49,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:49,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:49,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:49,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:49,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:49,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:49,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:49,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:49,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:49,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:25:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:49,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:49,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:49,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:49,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:49,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:49,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:49,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:49,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:25:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:49,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:49,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:49,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:25:49,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:49,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 05:25:49,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:49,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:49,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:25:49,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:25:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:25:49,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:49,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 05:25:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:49,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:49,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:49,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:49,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:49,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:49,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:49,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:49,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:49,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:49,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:49,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:49,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 05:25:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:49,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:49,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:49,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:49,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:49,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:49,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:49,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:49,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:49,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 05:25:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:49,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:49,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:49,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:25:49,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:49,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:25:49,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:49,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:49,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:49,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:25:49,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:49,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 05:25:49,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41998262] [2020-09-25 05:25:49,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:49,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:25:49,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822487474] [2020-09-25 05:25:49,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:25:49,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:49,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:25:49,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:25:49,458 INFO L87 Difference]: Start difference. First operand 190 states and 224 transitions. Second operand 5 states. [2020-09-25 05:25:49,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:49,600 INFO L93 Difference]: Finished difference Result 360 states and 441 transitions. [2020-09-25 05:25:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:25:49,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-09-25 05:25:49,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:49,605 INFO L225 Difference]: With dead ends: 360 [2020-09-25 05:25:49,605 INFO L226 Difference]: Without dead ends: 220 [2020-09-25 05:25:49,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:25:49,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-25 05:25:49,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 190. [2020-09-25 05:25:49,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-25 05:25:49,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 223 transitions. [2020-09-25 05:25:49,629 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 223 transitions. Word has length 112 [2020-09-25 05:25:49,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:49,630 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 223 transitions. [2020-09-25 05:25:49,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:25:49,630 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 223 transitions. [2020-09-25 05:25:49,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 05:25:49,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:49,632 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 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 05:25:49,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:25:49,632 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:49,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:49,633 INFO L82 PathProgramCache]: Analyzing trace with hash -515723641, now seen corresponding path program 2 times [2020-09-25 05:25:49,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:49,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369364564] [2020-09-25 05:25:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:49,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:49,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:50,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:50,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 05:25:50,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:50,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-09-25 05:25:50,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:50,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:25:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:25:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:25:50,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:50,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:50,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:50,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:50,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:50,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:50,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:50,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:50,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:50,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:50,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:50,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:50,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:50,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:25:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:50,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:50,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:50,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:50,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:50,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:50,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:50,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:50,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:50,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:50,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:50,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:50,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:25:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:50,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:50,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:50,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 05:25:50,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:50,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 05:25:50,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:50,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:25:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 05:25:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:25:50,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:50,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 05:25:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:50,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:50,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:50,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:50,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:50,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:25:50,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:50,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:50,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:50,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 05:25:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:50,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:50,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:50,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:50,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:50,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:50,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:50,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:50,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:50,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:50,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:50,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:50,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 05:25:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:50,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:50,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:50,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:25:50,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:50,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:25:50,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:50,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:50,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:50,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:25:50,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:50,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:50,364 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 05:25:50,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369364564] [2020-09-25 05:25:50,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:50,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:25:50,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444656397] [2020-09-25 05:25:50,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:25:50,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:50,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:25:50,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:25:50,366 INFO L87 Difference]: Start difference. First operand 190 states and 223 transitions. Second operand 6 states. [2020-09-25 05:25:50,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:50,498 INFO L93 Difference]: Finished difference Result 369 states and 453 transitions. [2020-09-25 05:25:50,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:25:50,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-09-25 05:25:50,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:50,501 INFO L225 Difference]: With dead ends: 369 [2020-09-25 05:25:50,501 INFO L226 Difference]: Without dead ends: 231 [2020-09-25 05:25:50,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:25:50,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-25 05:25:50,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 200. [2020-09-25 05:25:50,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 05:25:50,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 236 transitions. [2020-09-25 05:25:50,519 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 236 transitions. Word has length 117 [2020-09-25 05:25:50,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:50,519 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 236 transitions. [2020-09-25 05:25:50,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:25:50,519 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 236 transitions. [2020-09-25 05:25:50,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 05:25:50,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:50,521 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-09-25 05:25:50,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 05:25:50,522 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:50,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:50,522 INFO L82 PathProgramCache]: Analyzing trace with hash 237385401, now seen corresponding path program 1 times [2020-09-25 05:25:50,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:50,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642568048] [2020-09-25 05:25:50,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:50,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:50,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:51,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:51,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 05:25:51,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:51,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-09-25 05:25:51,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:51,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:25:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:25:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:25:51,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:51,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:51,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:51,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:51,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:51,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:51,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:51,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:51,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:51,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:51,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:51,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:51,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:51,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:25:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:51,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:51,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:51,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:51,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:51,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:51,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:51,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:51,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:51,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:51,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:25:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:51,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:51,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:51,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 05:25:51,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:51,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 05:25:51,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:51,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:25:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:25:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:25:51,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:51,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 05:25:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:51,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:51,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:51,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:51,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:51,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:51,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:51,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:51,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:51,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:51,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:51,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:51,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 05:25:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:51,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:51,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:51,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:51,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:51,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:51,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:51,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:51,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:51,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:51,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:51,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:51,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 05:25:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:51,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:51,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:51,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:25:51,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:51,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:25:51,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:51,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:51,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:51,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:25:51,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:51,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 05:25:51,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642568048] [2020-09-25 05:25:51,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:51,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:25:51,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556019120] [2020-09-25 05:25:51,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:25:51,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:51,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:25:51,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:25:51,322 INFO L87 Difference]: Start difference. First operand 200 states and 236 transitions. Second operand 6 states. [2020-09-25 05:25:51,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:51,445 INFO L93 Difference]: Finished difference Result 365 states and 449 transitions. [2020-09-25 05:25:51,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:25:51,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-09-25 05:25:51,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:51,448 INFO L225 Difference]: With dead ends: 365 [2020-09-25 05:25:51,448 INFO L226 Difference]: Without dead ends: 229 [2020-09-25 05:25:51,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:25:51,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-09-25 05:25:51,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 200. [2020-09-25 05:25:51,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 05:25:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 236 transitions. [2020-09-25 05:25:51,465 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 236 transitions. Word has length 117 [2020-09-25 05:25:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:51,466 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 236 transitions. [2020-09-25 05:25:51,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:25:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 236 transitions. [2020-09-25 05:25:51,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 05:25:51,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:51,470 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:51,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 05:25:51,470 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:51,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:51,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1273487743, now seen corresponding path program 3 times [2020-09-25 05:25:51,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:51,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536184799] [2020-09-25 05:25:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:51,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:51,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:52,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:52,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 05:25:52,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:52,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-09-25 05:25:52,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:52,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:25:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:25:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 05:25:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:52,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:52,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:52,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:52,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:52,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:52,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:52,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:52,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:52,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:52,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:52,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:52,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:52,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:25:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:52,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:52,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:52,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:52,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:52,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:52,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:52,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:52,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:52,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:52,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:52,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:52,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:25:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:52,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:52,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:52,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:25:52,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:52,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 05:25:52,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:52,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:25:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 05:25:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:25:52,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:52,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 05:25:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:52,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:52,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:52,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:52,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:52,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:52,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:52,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:52,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:52,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:52,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:52,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:52,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 05:25:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:52,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:52,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:52,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:52,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:52,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:52,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:52,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:52,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:52,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:52,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 05:25:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:52,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:52,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:52,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:25:52,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:52,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:52,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:52,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:25:52,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:52,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 05:25:52,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536184799] [2020-09-25 05:25:52,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:52,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:25:52,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337268403] [2020-09-25 05:25:52,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:25:52,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:52,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:25:52,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:25:52,405 INFO L87 Difference]: Start difference. First operand 200 states and 236 transitions. Second operand 7 states. [2020-09-25 05:25:52,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:52,542 INFO L93 Difference]: Finished difference Result 401 states and 495 transitions. [2020-09-25 05:25:52,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:25:52,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-09-25 05:25:52,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:52,546 INFO L225 Difference]: With dead ends: 401 [2020-09-25 05:25:52,546 INFO L226 Difference]: Without dead ends: 258 [2020-09-25 05:25:52,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:25:52,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-09-25 05:25:52,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 210. [2020-09-25 05:25:52,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-09-25 05:25:52,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 249 transitions. [2020-09-25 05:25:52,561 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 249 transitions. Word has length 122 [2020-09-25 05:25:52,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:52,561 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 249 transitions. [2020-09-25 05:25:52,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:25:52,562 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 249 transitions. [2020-09-25 05:25:52,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 05:25:52,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:52,565 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:25:52,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 05:25:52,566 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:52,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:52,567 INFO L82 PathProgramCache]: Analyzing trace with hash 2026596785, now seen corresponding path program 2 times [2020-09-25 05:25:52,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:52,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173670597] [2020-09-25 05:25:52,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:52,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:52,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:53,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:53,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 05:25:53,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:53,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-09-25 05:25:53,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:53,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:25:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:25:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:25:53,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:53,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:53,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:53,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:53,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:53,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:53,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:53,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:53,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:53,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:53,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:25:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:53,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:53,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:53,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:53,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:53,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:53,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:53,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:53,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:53,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:53,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:53,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:53,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:25:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:53,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:53,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:53,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:25:53,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 05:25:53,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:53,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:25:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:25:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:25:53,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:53,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 05:25:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:53,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:53,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:53,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:53,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:53,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:53,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:53,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:53,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:53,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 05:25:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:53,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:53,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:53,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:53,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:53,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:53,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:53,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:53,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:53,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:53,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:53,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:53,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 05:25:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:53,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:53,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:53,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:25:53,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:53,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:53,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:53,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:25:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:53,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:53,524 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 05:25:53,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173670597] [2020-09-25 05:25:53,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:53,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:25:53,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713861489] [2020-09-25 05:25:53,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:25:53,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:53,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:25:53,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:25:53,526 INFO L87 Difference]: Start difference. First operand 210 states and 249 transitions. Second operand 7 states. [2020-09-25 05:25:53,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:53,796 INFO L93 Difference]: Finished difference Result 401 states and 497 transitions. [2020-09-25 05:25:53,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:25:53,796 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-09-25 05:25:53,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:53,799 INFO L225 Difference]: With dead ends: 401 [2020-09-25 05:25:53,799 INFO L226 Difference]: Without dead ends: 250 [2020-09-25 05:25:53,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:25:53,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-09-25 05:25:53,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 210. [2020-09-25 05:25:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-09-25 05:25:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 247 transitions. [2020-09-25 05:25:53,823 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 247 transitions. Word has length 122 [2020-09-25 05:25:53,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:53,823 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 247 transitions. [2020-09-25 05:25:53,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:25:53,823 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 247 transitions. [2020-09-25 05:25:53,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 05:25:53,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:53,826 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:53,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 05:25:53,826 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:53,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:53,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1176254073, now seen corresponding path program 4 times [2020-09-25 05:25:53,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:53,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891833619] [2020-09-25 05:25:53,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:53,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:53,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:54,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:54,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 05:25:54,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:54,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 844 [2020-09-25 05:25:54,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:54,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:54,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:25:54,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:25:54,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:25:54,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:54,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:54,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:54,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:54,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:54,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:54,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:54,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:54,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:54,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:54,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:54,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:54,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:54,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:25:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:54,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:54,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:54,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:54,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:54,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:54,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:54,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:54,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:54,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:54,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:54,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:54,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:25:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:54,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:54,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:54,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 05:25:54,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:54,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 05:25:54,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:54,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:25:54,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 05:25:54,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 05:25:54,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:54,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 05:25:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:54,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:54,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:54,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:54,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:54,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:54,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:54,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:54,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:54,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:54,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:54,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:54,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 05:25:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:54,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:54,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:54,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:54,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:54,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:54,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:54,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:54,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:54,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:54,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:54,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:54,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 05:25:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:54,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:54,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:54,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:25:54,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:54,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:54,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:54,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:54,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:54,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:25:54,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:54,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 05:25:54,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891833619] [2020-09-25 05:25:54,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:54,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:25:54,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657222410] [2020-09-25 05:25:54,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:25:54,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:54,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:25:54,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:25:54,907 INFO L87 Difference]: Start difference. First operand 210 states and 247 transitions. Second operand 8 states. [2020-09-25 05:25:55,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:55,083 INFO L93 Difference]: Finished difference Result 419 states and 523 transitions. [2020-09-25 05:25:55,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:25:55,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 127 [2020-09-25 05:25:55,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:55,086 INFO L225 Difference]: With dead ends: 419 [2020-09-25 05:25:55,086 INFO L226 Difference]: Without dead ends: 271 [2020-09-25 05:25:55,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:25:55,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-09-25 05:25:55,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 220. [2020-09-25 05:25:55,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-25 05:25:55,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 260 transitions. [2020-09-25 05:25:55,105 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 260 transitions. Word has length 127 [2020-09-25 05:25:55,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:55,106 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 260 transitions. [2020-09-25 05:25:55,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:25:55,106 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 260 transitions. [2020-09-25 05:25:55,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 05:25:55,109 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:55,109 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:55,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 05:25:55,110 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:55,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:55,110 INFO L82 PathProgramCache]: Analyzing trace with hash -423145031, now seen corresponding path program 3 times [2020-09-25 05:25:55,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:55,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966285052] [2020-09-25 05:25:55,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:55,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:55,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:55,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:55,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 05:25:55,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:55,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 867 [2020-09-25 05:25:55,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:55,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:55,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:25:55,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:25:55,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:25:55,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:56,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:56,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:56,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:56,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:56,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:56,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:56,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:56,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:56,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:56,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:25:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:56,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:56,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:56,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:56,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:56,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:56,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:56,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:56,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:56,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:56,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:56,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:56,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:25:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:56,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:56,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:56,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 05:25:56,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:56,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 05:25:56,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:56,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:56,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:25:56,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:25:56,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:25:56,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:56,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 05:25:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:56,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:56,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:56,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:56,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:56,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:56,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:56,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:56,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:56,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 05:25:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:56,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:56,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:56,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:56,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:56,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:56,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:56,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:56,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:56,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:25:56,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:56,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:56,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 05:25:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:56,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:56,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:56,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:25:56,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:56,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:56,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:56,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:25:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:56,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:56,295 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 7 proven. 44 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 05:25:56,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966285052] [2020-09-25 05:25:56,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:25:56,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:25:56,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804466646] [2020-09-25 05:25:56,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:25:56,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:56,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:25:56,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:25:56,298 INFO L87 Difference]: Start difference. First operand 220 states and 260 transitions. Second operand 8 states. [2020-09-25 05:25:56,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:56,749 INFO L93 Difference]: Finished difference Result 420 states and 522 transitions. [2020-09-25 05:25:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:25:56,752 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 127 [2020-09-25 05:25:56,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:56,755 INFO L225 Difference]: With dead ends: 420 [2020-09-25 05:25:56,755 INFO L226 Difference]: Without dead ends: 265 [2020-09-25 05:25:56,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:25:56,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-25 05:25:56,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 220. [2020-09-25 05:25:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-25 05:25:56,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 259 transitions. [2020-09-25 05:25:56,786 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 259 transitions. Word has length 127 [2020-09-25 05:25:56,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:56,787 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 259 transitions. [2020-09-25 05:25:56,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:25:56,787 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 259 transitions. [2020-09-25 05:25:56,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 05:25:56,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:56,791 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:56,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 05:25:56,792 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:56,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:56,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1027627393, now seen corresponding path program 5 times [2020-09-25 05:25:56,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:56,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013159524] [2020-09-25 05:25:56,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:56,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:57,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:57,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:57,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 05:25:57,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:57,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1066 [2020-09-25 05:25:57,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:57,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:57,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:25:57,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-25 05:25:57,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:25:57,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:57,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:57,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:57,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:57,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:57,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:57,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:57,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:57,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:57,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:57,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:25:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:57,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:57,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:57,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:57,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:57,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:57,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:57,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:57,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:57,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:25:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:57,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:57,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:58,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:58,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 05:25:58,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:58,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 05:25:58,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:58,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:58,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:58,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:58,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:58,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:58,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 05:25:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:58,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:58,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:58,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:58,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:58,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:58,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:58,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:58,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:58,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:58,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:58,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:58,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 05:25:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:58,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:58,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:58,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:58,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:58,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:58,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:58,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:58,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:58,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:58,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:58,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:58,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 05:25:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:58,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:58,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:58,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:25:58,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:58,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:25:58,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:58,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:58,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:25:58,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:58,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:25:58,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-09-25 05:25:58,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013159524] [2020-09-25 05:25:58,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:25:58,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:25:58,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307783458] [2020-09-25 05:25:58,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:25:58,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:58,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:25:58,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:25:58,122 INFO L87 Difference]: Start difference. First operand 220 states and 259 transitions. Second operand 6 states. [2020-09-25 05:25:58,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:58,188 INFO L93 Difference]: Finished difference Result 243 states and 284 transitions. [2020-09-25 05:25:58,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:25:58,189 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2020-09-25 05:25:58,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:58,192 INFO L225 Difference]: With dead ends: 243 [2020-09-25 05:25:58,192 INFO L226 Difference]: Without dead ends: 236 [2020-09-25 05:25:58,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:25:58,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-09-25 05:25:58,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 232. [2020-09-25 05:25:58,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-09-25 05:25:58,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 273 transitions. [2020-09-25 05:25:58,206 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 273 transitions. Word has length 132 [2020-09-25 05:25:58,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:58,207 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 273 transitions. [2020-09-25 05:25:58,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:25:58,207 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 273 transitions. [2020-09-25 05:25:58,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 05:25:58,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:58,209 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:58,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 05:25:58,210 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:58,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:58,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1720771103, now seen corresponding path program 1 times [2020-09-25 05:25:58,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:58,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778206996] [2020-09-25 05:25:58,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:58,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:58,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:59,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:59,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 05:25:59,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:59,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 987 [2020-09-25 05:25:59,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:59,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:25:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-09-25 05:25:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:25:59,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:59,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:59,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:59,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:59,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:59,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:59,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:59,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:59,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:59,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:59,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:25:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:59,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:59,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:59,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:59,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:59,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:59,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:59,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:59,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:59,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:59,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:59,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:59,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:25:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:59,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:59,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:59,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:59,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 05:25:59,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:59,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 05:25:59,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:59,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:59,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:59,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:59,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:59,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:59,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 05:25:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:59,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:59,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:59,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:59,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:59,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:59,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:59,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:59,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:59,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:59,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:59,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:25:59,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 05:25:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:59,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:59,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:59,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:25:59,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:59,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:25:59,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:59,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:59,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:59,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:59,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:59,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:59,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 05:25:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:59,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:59,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:59,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:25:59,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:59,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:25:59,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:59,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:59,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:59,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:59,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:59,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:25:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-09-25 05:25:59,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778206996] [2020-09-25 05:25:59,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:25:59,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:25:59,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28244839] [2020-09-25 05:25:59,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:25:59,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:59,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:25:59,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:25:59,451 INFO L87 Difference]: Start difference. First operand 232 states and 273 transitions. Second operand 6 states. [2020-09-25 05:25:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:59,499 INFO L93 Difference]: Finished difference Result 238 states and 278 transitions. [2020-09-25 05:25:59,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:25:59,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2020-09-25 05:25:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:59,501 INFO L225 Difference]: With dead ends: 238 [2020-09-25 05:25:59,502 INFO L226 Difference]: Without dead ends: 226 [2020-09-25 05:25:59,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:25:59,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-25 05:25:59,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-25 05:25:59,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-25 05:25:59,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 264 transitions. [2020-09-25 05:25:59,517 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 264 transitions. Word has length 132 [2020-09-25 05:25:59,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:59,517 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 264 transitions. [2020-09-25 05:25:59,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:25:59,517 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 264 transitions. [2020-09-25 05:25:59,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 05:25:59,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:59,520 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:59,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 05:25:59,520 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:59,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:59,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1267192981, now seen corresponding path program 1 times [2020-09-25 05:25:59,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:59,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295376483] [2020-09-25 05:25:59,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:59,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:59,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:59,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:59,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:03,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:04,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:04,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 05:26:04,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:26:04,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:26:04,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:04,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:04,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:26:04,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:26:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 05:26:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:04,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:04,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:04,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:04,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:04,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:04,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:26:04,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:04,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:04,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:04,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:26:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:04,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:04,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:04,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:26:04,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:04,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:26:04,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:04,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:04,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:26:04,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:04,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:26:04,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:04,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:26:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:04,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:04,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:04,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:04,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 05:26:04,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:26:04,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-25 05:26:04,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:04,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:04,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:26:04,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:04,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 05:26:04,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:04,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 05:26:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:04,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:04,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:04,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:26:04,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:04,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:26:04,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:04,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:26:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:26:04,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:04,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 05:26:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:04,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:04,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:04,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:26:04,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:04,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:26:04,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:04,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:04,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:26:04,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:04,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:26:04,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:04,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 05:26:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:04,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:05,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:05,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 05:26:05,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:05,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 05:26:05,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:05,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:26:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:26:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 05:26:05,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:26:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-09-25 05:26:05,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295376483] [2020-09-25 05:26:05,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:26:05,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 05:26:05,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978195970] [2020-09-25 05:26:05,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:26:05,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:05,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:26:05,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:26:05,182 INFO L87 Difference]: Start difference. First operand 226 states and 264 transitions. Second operand 10 states. [2020-09-25 05:26:05,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:05,451 INFO L93 Difference]: Finished difference Result 288 states and 340 transitions. [2020-09-25 05:26:05,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:26:05,452 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 141 [2020-09-25 05:26:05,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:05,454 INFO L225 Difference]: With dead ends: 288 [2020-09-25 05:26:05,454 INFO L226 Difference]: Without dead ends: 276 [2020-09-25 05:26:05,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:26:05,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-09-25 05:26:05,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 255. [2020-09-25 05:26:05,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-09-25 05:26:05,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 299 transitions. [2020-09-25 05:26:05,472 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 299 transitions. Word has length 141 [2020-09-25 05:26:05,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:05,472 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 299 transitions. [2020-09-25 05:26:05,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:26:05,472 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 299 transitions. [2020-09-25 05:26:05,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 05:26:05,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:05,475 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:05,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 05:26:05,475 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:05,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:05,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1903545096, now seen corresponding path program 1 times [2020-09-25 05:26:05,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:05,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153433900] [2020-09-25 05:26:05,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:05,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:05,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:05,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:06,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking...