/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=LOWLEXORDER --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_5a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:30:51,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:30:51,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:30:51,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:30:51,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:30:51,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:30:51,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:30:51,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:30:51,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:30:51,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:30:51,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:30:51,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:30:51,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:30:51,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:30:51,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:30:51,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:30:51,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:30:51,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:30:51,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:30:51,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:30:51,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:30:51,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:30:51,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:30:51,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:30:51,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:30:51,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:30:51,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:30:51,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:30:52,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:30:52,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:30:52,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:30:52,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:30:52,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:30:52,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:30:52,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:30:52,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:30:52,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:30:52,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:30:52,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:30:52,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:30:52,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:30:52,009 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 [2020-09-24 21:30:52,046 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:30:52,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:30:52,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:30:52,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:30:52,048 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:30:52,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:30:52,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:30:52,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:30:52,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:30:52,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:30:52,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:30:52,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:30:52,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:30:52,050 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:30:52,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:30:52,050 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:30:52,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:30:52,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:30:52,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:30:52,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:30:52,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:30:52,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:30:52,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:30:52,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:30:52,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:30:52,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:30:52,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:30:52,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:30:52,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:30:52,053 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:30:52,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:30:52,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:30:52,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:30:52,595 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:30:52,596 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:30:52,597 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2020-09-24 21:30:52,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/943e15d59/0d7679f2facf45f881389b0661ab68de/FLAG2668a6408 [2020-09-24 21:30:53,202 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:30:53,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2020-09-24 21:30:53,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/943e15d59/0d7679f2facf45f881389b0661ab68de/FLAG2668a6408 [2020-09-24 21:30:53,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/943e15d59/0d7679f2facf45f881389b0661ab68de [2020-09-24 21:30:53,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:30:53,568 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:30:53,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:53,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:30:53,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:30:53,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:53" (1/1) ... [2020-09-24 21:30:53,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7702166d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:53, skipping insertion in model container [2020-09-24 21:30:53,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:53" (1/1) ... [2020-09-24 21:30:53,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:30:53,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:30:53,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:53,977 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:30:54,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:54,172 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:30:54,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:54 WrapperNode [2020-09-24 21:30:54,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:54,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:30:54,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:30:54,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:30:54,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:54" (1/1) ... [2020-09-24 21:30:54,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:54" (1/1) ... [2020-09-24 21:30:54,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:54" (1/1) ... [2020-09-24 21:30:54,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:54" (1/1) ... [2020-09-24 21:30:54,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:54" (1/1) ... [2020-09-24 21:30:54,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:54" (1/1) ... [2020-09-24 21:30:54,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:54" (1/1) ... [2020-09-24 21:30:54,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:30:54,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:30:54,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:30:54,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:30:54,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:54" (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 [2020-09-24 21:30:54,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:30:54,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:30:54,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 21:30:54,319 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-24 21:30:54,320 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-24 21:30:54,320 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-24 21:30:54,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:30:54,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:30:54,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 21:30:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 21:30:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:30:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-24 21:30:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-24 21:30:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-24 21:30:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:30:54,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:30:54,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:30:54,917 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:30:54,918 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 21:30:54,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:54 BoogieIcfgContainer [2020-09-24 21:30:54,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:30:54,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:30:54,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:30:54,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:30:54,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:30:53" (1/3) ... [2020-09-24 21:30:54,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575a6862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:54, skipping insertion in model container [2020-09-24 21:30:54,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:54" (2/3) ... [2020-09-24 21:30:54,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575a6862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:54, skipping insertion in model container [2020-09-24 21:30:54,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:54" (3/3) ... [2020-09-24 21:30:54,935 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2020-09-24 21:30:54,947 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:30:54,961 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:30:54,982 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:30:55,014 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:30:55,015 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:30:55,015 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:30:55,015 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:30:55,015 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:30:55,015 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:30:55,016 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:30:55,016 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:30:55,042 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-09-24 21:30:55,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-24 21:30:55,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:55,058 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] [2020-09-24 21:30:55,058 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:55,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:55,065 INFO L82 PathProgramCache]: Analyzing trace with hash -2062280112, now seen corresponding path program 1 times [2020-09-24 21:30:55,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:55,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572019853] [2020-09-24 21:30:55,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:55,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:55,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:56,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:56,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:57,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:57,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 21:30:57,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:30:57,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1852 [2020-09-24 21:30:57,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:57,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:30:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 21:30:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 21:30:57,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:30:57,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:57,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:57,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:57,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:30:57,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:57,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:30:57,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:57,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:57,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:57,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:30:57,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 21:30:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:57,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:57,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:57,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:30:57,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:57,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:30:57,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:30:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:57,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:30:57,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:57,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 21:30:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:57,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:57,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:57,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:57,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:30:57,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:30:57,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 21:30:57,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:30:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:30:57,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:57,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 21:30:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:57,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:57,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:57,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:30:57,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:57,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:30:57,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:57,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:30:57,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:57,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:30:57,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:57,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 21:30:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:57,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:57,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:57,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:30:57,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:30:57,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:30:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:30:57,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:57,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 21:30:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:57,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:57,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:57,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:30:57,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:57,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:30:57,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:57,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:57,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:30:57,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:57,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:57,454 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-24 21:30:57,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572019853] [2020-09-24 21:30:57,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:30:57,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 21:30:57,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581834463] [2020-09-24 21:30:57,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:30:57,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:57,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:30:57,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:30:57,504 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 6 states. [2020-09-24 21:30:57,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:57,701 INFO L93 Difference]: Finished difference Result 278 states and 352 transitions. [2020-09-24 21:30:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:30:57,703 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-09-24 21:30:57,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:57,725 INFO L225 Difference]: With dead ends: 278 [2020-09-24 21:30:57,725 INFO L226 Difference]: Without dead ends: 156 [2020-09-24 21:30:57,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:30:57,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-09-24 21:30:57,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 151. [2020-09-24 21:30:57,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-24 21:30:57,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 181 transitions. [2020-09-24 21:30:57,820 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 181 transitions. Word has length 100 [2020-09-24 21:30:57,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:57,821 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 181 transitions. [2020-09-24 21:30:57,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:30:57,821 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 181 transitions. [2020-09-24 21:30:57,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-24 21:30:57,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:57,829 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, 1, 1] [2020-09-24 21:30:57,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:30:57,829 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:57,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:57,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1435857694, now seen corresponding path program 1 times [2020-09-24 21:30:57,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:57,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545204716] [2020-09-24 21:30:57,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:57,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:57,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:58,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:58,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:00,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:00,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:02,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:02,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-24 21:31:02,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:31:02,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 21:31:02,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:31:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 21:31:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:31:02,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:02,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:31:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:02,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:02,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:02,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:31:02,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:02,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:31:02,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:02,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:02,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:02,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:02,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:31:02,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 21:31:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:02,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:02,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:02,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:02,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:02,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:31:02,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:02,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:02,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:02,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:02,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:02,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 21:31:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:02,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:02,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:02,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:02,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:02,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:31:02,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:31:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:31:02,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:31:02,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:02,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 21:31:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:02,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:02,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:02,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:02,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:02,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:31:02,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:02,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:02,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:31:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:02,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:02,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 21:31:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:02,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:02,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:02,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:02,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:03,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:31:03,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:03,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:03,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:31:03,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:03,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:03,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 21:31:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:03,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:03,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:03,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:31:03,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:03,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:31:03,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:03,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:03,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:31:03,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:03,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:03,070 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 21:31:03,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545204716] [2020-09-24 21:31:03,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:31:03,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-24 21:31:03,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933140840] [2020-09-24 21:31:03,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:31:03,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:31:03,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:31:03,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:31:03,080 INFO L87 Difference]: Start difference. First operand 151 states and 181 transitions. Second operand 4 states. [2020-09-24 21:31:03,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:31:03,224 INFO L93 Difference]: Finished difference Result 334 states and 414 transitions. [2020-09-24 21:31:03,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:31:03,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-09-24 21:31:03,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:31:03,229 INFO L225 Difference]: With dead ends: 334 [2020-09-24 21:31:03,229 INFO L226 Difference]: Without dead ends: 214 [2020-09-24 21:31:03,232 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 [2020-09-24 21:31:03,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-24 21:31:03,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 181. [2020-09-24 21:31:03,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-09-24 21:31:03,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 215 transitions. [2020-09-24 21:31:03,258 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 215 transitions. Word has length 104 [2020-09-24 21:31:03,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:31:03,258 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 215 transitions. [2020-09-24 21:31:03,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:31:03,259 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 215 transitions. [2020-09-24 21:31:03,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 21:31:03,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:03,272 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] [2020-09-24 21:31:03,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:31:03,272 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:03,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:03,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1632335847, now seen corresponding path program 1 times [2020-09-24 21:31:03,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:03,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392410508] [2020-09-24 21:31:03,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:03,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:03,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:03,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:03,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:06,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:06,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:08,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:08,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-24 21:31:08,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:31:08,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 21:31:08,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:08,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:31:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 21:31:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:31:08,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:08,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:31:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:08,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:08,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:08,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:31:08,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:08,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:31:08,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:08,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:08,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:08,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:08,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 21:31:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:08,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:08,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:08,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:08,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:08,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:31:08,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:08,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:08,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:08,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:08,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:08,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 21:31:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:08,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:08,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:08,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:31:08,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:08,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 21:31:08,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:08,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:31:08,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 21:31:08,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:31:08,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:08,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 21:31:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:08,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:08,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:08,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:08,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:08,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:31:08,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:31:08,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:08,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:08,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-24 21:31:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:08,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:08,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:08,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:08,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:08,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:31:08,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:08,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:08,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:31:08,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:08,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:08,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 21:31:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:08,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:08,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:08,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:31:08,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:08,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:31:08,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:08,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:08,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:31:08,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:08,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 21:31:08,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392410508] [2020-09-24 21:31:08,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:31:08,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-24 21:31:08,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797965641] [2020-09-24 21:31:08,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:31:08,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:31:08,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:31:08,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:31:08,480 INFO L87 Difference]: Start difference. First operand 181 states and 215 transitions. Second operand 4 states. [2020-09-24 21:31:08,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:31:08,594 INFO L93 Difference]: Finished difference Result 343 states and 418 transitions. [2020-09-24 21:31:08,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 21:31:08,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-09-24 21:31:08,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:31:08,598 INFO L225 Difference]: With dead ends: 343 [2020-09-24 21:31:08,599 INFO L226 Difference]: Without dead ends: 209 [2020-09-24 21:31:08,600 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 [2020-09-24 21:31:08,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-24 21:31:08,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 193. [2020-09-24 21:31:08,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-09-24 21:31:08,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 233 transitions. [2020-09-24 21:31:08,621 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 233 transitions. Word has length 107 [2020-09-24 21:31:08,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:31:08,622 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 233 transitions. [2020-09-24 21:31:08,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:31:08,622 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 233 transitions. [2020-09-24 21:31:08,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-24 21:31:08,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:08,624 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] [2020-09-24 21:31:08,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:31:08,625 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:08,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:08,625 INFO L82 PathProgramCache]: Analyzing trace with hash -123736294, now seen corresponding path program 1 times [2020-09-24 21:31:08,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:08,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673179451] [2020-09-24 21:31:08,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:08,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:08,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:08,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:08,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:11,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:11,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:13,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:13,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 21:31:13,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:31:13,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 21:31:13,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:13,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:31:13,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 21:31:13,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:31:13,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:13,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:31:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:13,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:13,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:13,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:31:13,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:13,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:31:13,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:13,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:13,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:13,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:13,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 21:31:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:13,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:13,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:13,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:13,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:13,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:31:13,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:13,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:13,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:13,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:13,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:31:13,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 21:31:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:13,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:13,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:13,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:31:13,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:13,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:31:13,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:13,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:31:13,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:31:13,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:31:13,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:13,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 21:31:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:13,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:13,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:13,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:13,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:13,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:31:13,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:13,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:13,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:31:13,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:13,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:13,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 21:31:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:13,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:13,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:13,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:13,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:13,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:31:13,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:13,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:13,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:31:13,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:13,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:13,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 21:31:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:13,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:13,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:13,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:31:13,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:13,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:31:13,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:13,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:13,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:31:13,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:13,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:13,797 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 21:31:13,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673179451] [2020-09-24 21:31:13,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:31:13,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-24 21:31:13,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495823411] [2020-09-24 21:31:13,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:31:13,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:31:13,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:31:13,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:31:13,802 INFO L87 Difference]: Start difference. First operand 193 states and 233 transitions. Second operand 4 states. [2020-09-24 21:31:13,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:31:13,925 INFO L93 Difference]: Finished difference Result 351 states and 435 transitions. [2020-09-24 21:31:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:31:13,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-09-24 21:31:13,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:31:13,932 INFO L225 Difference]: With dead ends: 351 [2020-09-24 21:31:13,933 INFO L226 Difference]: Without dead ends: 200 [2020-09-24 21:31:13,934 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 [2020-09-24 21:31:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-09-24 21:31:13,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 183. [2020-09-24 21:31:13,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-09-24 21:31:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 217 transitions. [2020-09-24 21:31:13,969 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 217 transitions. Word has length 109 [2020-09-24 21:31:13,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:31:13,970 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 217 transitions. [2020-09-24 21:31:13,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:31:13,970 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 217 transitions. [2020-09-24 21:31:13,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-24 21:31:13,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:13,973 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] [2020-09-24 21:31:13,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:31:13,973 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:13,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:13,974 INFO L82 PathProgramCache]: Analyzing trace with hash -2092072737, now seen corresponding path program 1 times [2020-09-24 21:31:13,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:13,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165709662] [2020-09-24 21:31:13,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:14,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:14,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:14,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:14,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:16,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:17,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:18,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:18,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 21:31:18,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:31:18,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 21:31:18,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:18,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:18,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 21:31:18,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 21:31:18,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:19,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:31:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:19,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:19,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:19,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:31:19,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:19,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:31:19,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:19,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:19,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:19,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:19,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:19,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 21:31:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:19,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:19,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:19,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:19,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:19,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:31:19,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:19,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:19,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:19,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:19,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:19,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 21:31:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:19,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:19,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:19,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 21:31:19,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:19,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 21:31:19,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 21:31:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:31:19,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:19,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 21:31:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:19,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:19,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:19,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:19,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:19,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:31:19,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:19,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:31:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:19,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:19,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 21:31:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:19,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:19,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:19,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:19,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:19,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:31:19,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:31:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:19,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:19,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 21:31:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:19,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:19,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:19,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:31:19,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:19,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:31:19,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:19,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:19,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:31:19,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:19,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 21:31:19,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165709662] [2020-09-24 21:31:19,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:31:19,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 21:31:19,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011449031] [2020-09-24 21:31:19,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:31:19,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:31:19,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:31:19,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:31:19,146 INFO L87 Difference]: Start difference. First operand 183 states and 217 transitions. Second operand 5 states. [2020-09-24 21:31:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:31:19,259 INFO L93 Difference]: Finished difference Result 350 states and 430 transitions. [2020-09-24 21:31:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:31:19,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-09-24 21:31:19,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:31:19,261 INFO L225 Difference]: With dead ends: 350 [2020-09-24 21:31:19,262 INFO L226 Difference]: Without dead ends: 214 [2020-09-24 21:31:19,263 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 [2020-09-24 21:31:19,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-24 21:31:19,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 193. [2020-09-24 21:31:19,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-09-24 21:31:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 230 transitions. [2020-09-24 21:31:19,276 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 230 transitions. Word has length 112 [2020-09-24 21:31:19,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:31:19,276 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 230 transitions. [2020-09-24 21:31:19,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:31:19,277 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 230 transitions. [2020-09-24 21:31:19,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-24 21:31:19,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:19,279 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] [2020-09-24 21:31:19,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:31:19,279 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:19,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:19,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1338963695, now seen corresponding path program 1 times [2020-09-24 21:31:19,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:19,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421761346] [2020-09-24 21:31:19,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:19,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:19,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:19,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:19,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:21,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:24,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:24,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 21:31:24,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:31:24,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:31:24,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:24,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:24,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 21:31:24,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:31:24,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:24,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:31:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:24,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:24,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:24,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:31:24,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:24,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:31:24,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:24,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:24,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:24,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:24,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 21:31:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:24,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:24,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:24,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:24,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:24,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:31:24,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:24,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:24,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:24,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:24,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:24,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 21:31:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:24,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:24,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:24,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 21:31:24,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:24,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 21:31:24,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:24,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:24,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:31:24,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:31:24,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:24,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 21:31:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:24,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:24,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:24,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:24,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:24,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:31:24,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:31:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:24,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:24,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 21:31:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:24,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:24,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:24,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:24,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:24,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:31:24,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:24,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:24,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:31:24,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:24,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:24,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 21:31:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:24,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:24,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:31:24,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:24,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:31:24,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:24,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:24,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:31:24,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:24,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:24,460 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 21:31:24,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421761346] [2020-09-24 21:31:24,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:31:24,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 21:31:24,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509130135] [2020-09-24 21:31:24,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:31:24,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:31:24,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:31:24,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:31:24,463 INFO L87 Difference]: Start difference. First operand 193 states and 230 transitions. Second operand 5 states. [2020-09-24 21:31:24,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:31:24,566 INFO L93 Difference]: Finished difference Result 352 states and 435 transitions. [2020-09-24 21:31:24,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:31:24,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-09-24 21:31:24,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:31:24,568 INFO L225 Difference]: With dead ends: 352 [2020-09-24 21:31:24,569 INFO L226 Difference]: Without dead ends: 218 [2020-09-24 21:31:24,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:31:24,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-24 21:31:24,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 193. [2020-09-24 21:31:24,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-09-24 21:31:24,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 230 transitions. [2020-09-24 21:31:24,583 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 230 transitions. Word has length 112 [2020-09-24 21:31:24,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:31:24,583 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 230 transitions. [2020-09-24 21:31:24,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:31:24,584 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 230 transitions. [2020-09-24 21:31:24,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-24 21:31:24,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:24,586 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] [2020-09-24 21:31:24,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:31:24,586 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:24,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:24,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1602071833, now seen corresponding path program 2 times [2020-09-24 21:31:24,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:24,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252066373] [2020-09-24 21:31:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:24,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:24,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:24,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:24,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:27,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:27,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:29,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:29,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-24 21:31:29,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:31:29,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:31:29,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:29,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:31:29,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 21:31:29,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:31:29,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:29,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:31:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:29,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:29,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:29,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:31:29,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:29,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:31:29,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:29,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:29,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 21:31:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:29,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:29,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:29,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:29,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:29,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:31:29,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:29,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:29,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:29,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:29,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:29,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 21:31:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:29,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:29,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:29,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 21:31:29,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:29,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 21:31:29,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:31:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 21:31:29,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 21:31:29,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:29,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 21:31:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:29,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:29,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:29,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:29,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:29,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:31:29,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:31:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:29,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:29,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 21:31:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:29,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:29,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:29,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:29,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:29,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:31:29,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:31:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:29,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:29,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:31:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:29,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:29,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:29,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:31:29,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:29,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:31:29,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:29,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:29,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:31:29,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:29,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 21:31:29,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252066373] [2020-09-24 21:31:29,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:31:29,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 21:31:29,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807736493] [2020-09-24 21:31:29,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:31:29,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:31:29,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:31:29,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:31:29,751 INFO L87 Difference]: Start difference. First operand 193 states and 230 transitions. Second operand 6 states. [2020-09-24 21:31:29,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:31:29,868 INFO L93 Difference]: Finished difference Result 381 states and 472 transitions. [2020-09-24 21:31:29,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:31:29,869 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-09-24 21:31:29,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:31:29,871 INFO L225 Difference]: With dead ends: 381 [2020-09-24 21:31:29,871 INFO L226 Difference]: Without dead ends: 240 [2020-09-24 21:31:29,873 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 [2020-09-24 21:31:29,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-24 21:31:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 203. [2020-09-24 21:31:29,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-24 21:31:29,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 243 transitions. [2020-09-24 21:31:29,895 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 243 transitions. Word has length 117 [2020-09-24 21:31:29,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:31:29,896 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 243 transitions. [2020-09-24 21:31:29,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:31:29,896 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 243 transitions. [2020-09-24 21:31:29,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-24 21:31:29,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:29,899 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] [2020-09-24 21:31:29,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:31:29,899 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:29,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:29,900 INFO L82 PathProgramCache]: Analyzing trace with hash -848962791, now seen corresponding path program 1 times [2020-09-24 21:31:29,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:29,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124243080] [2020-09-24 21:31:29,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:29,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:29,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:30,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:30,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:32,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:32,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:34,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:34,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-24 21:31:34,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:31:34,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:31:34,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:34,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:31:34,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 21:31:34,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:31:34,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:34,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:31:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:34,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:34,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:34,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:31:34,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:34,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:31:34,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:34,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:34,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:34,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:34,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:34,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 21:31:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:34,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:34,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:34,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:34,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:34,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:31:34,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:34,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:34,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:34,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:34,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:34,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 21:31:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:34,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:34,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:34,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 21:31:34,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:34,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 21:31:34,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:34,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:31:34,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:31:34,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:31:34,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:35,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 21:31:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:35,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:35,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:35,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:35,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:31:35,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:31:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:35,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:35,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 21:31:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:35,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:35,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:35,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:31:35,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:35,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:31:35,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:35,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:31:35,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:35,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:35,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:31:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:35,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:35,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:35,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:31:35,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:35,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:31:35,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:35,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:35,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:31:35,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:35,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:31:35,161 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 21:31:35,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124243080] [2020-09-24 21:31:35,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:31:35,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 21:31:35,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149743189] [2020-09-24 21:31:35,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:31:35,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:31:35,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:31:35,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:31:35,165 INFO L87 Difference]: Start difference. First operand 203 states and 243 transitions. Second operand 6 states. [2020-09-24 21:31:35,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:31:35,306 INFO L93 Difference]: Finished difference Result 371 states and 462 transitions. [2020-09-24 21:31:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:31:35,307 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-09-24 21:31:35,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:31:35,311 INFO L225 Difference]: With dead ends: 371 [2020-09-24 21:31:35,311 INFO L226 Difference]: Without dead ends: 232 [2020-09-24 21:31:35,312 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 [2020-09-24 21:31:35,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-09-24 21:31:35,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 203. [2020-09-24 21:31:35,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-24 21:31:35,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 243 transitions. [2020-09-24 21:31:35,333 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 243 transitions. Word has length 117 [2020-09-24 21:31:35,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:31:35,333 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 243 transitions. [2020-09-24 21:31:35,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:31:35,334 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 243 transitions. [2020-09-24 21:31:35,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-24 21:31:35,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:35,336 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] [2020-09-24 21:31:35,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 21:31:35,336 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:35,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:35,337 INFO L82 PathProgramCache]: Analyzing trace with hash 187139551, now seen corresponding path program 3 times [2020-09-24 21:31:35,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:35,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024667568] [2020-09-24 21:31:35,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:35,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:35,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:35,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:35,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking...