/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/eca-rers2012/Problem10_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:45:38,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:45:38,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:45:38,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:45:38,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:45:38,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:45:38,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:45:38,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:45:38,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:45:38,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:45:38,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:45:38,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:45:38,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:45:38,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:45:38,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:45:38,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:45:38,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:45:38,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:45:38,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:45:38,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:45:38,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:45:38,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:45:38,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:45:38,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:45:39,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:45:39,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:45:39,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:45:39,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:45:39,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:45:39,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:45:39,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:45:39,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:45:39,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:45:39,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:45:39,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:45:39,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:45:39,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:45:39,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:45:39,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:45:39,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:45:39,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:45:39,018 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 21:45:39,044 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:45:39,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:45:39,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:45:39,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:45:39,046 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:45:39,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:45:39,049 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:45:39,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:45:39,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:45:39,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:45:39,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:45:39,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:45:39,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:45:39,050 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:45:39,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:45:39,052 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:45:39,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:45:39,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:45:39,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:45:39,052 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:45:39,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:45:39,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:45:39,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:45:39,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:45:39,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:45:39,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:45:39,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:45:39,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:45:39,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:45:39,054 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 21:45:39,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:45:39,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:45:39,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:45:39,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:45:39,543 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:45:39,544 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-24 21:45:39,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e398358e1/bf51cc87ab09418aa38e2b34ba5c633a/FLAGafeef0ad0 [2020-09-24 21:45:40,240 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:45:40,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-24 21:45:40,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e398358e1/bf51cc87ab09418aa38e2b34ba5c633a/FLAGafeef0ad0 [2020-09-24 21:45:40,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e398358e1/bf51cc87ab09418aa38e2b34ba5c633a [2020-09-24 21:45:40,485 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:45:40,490 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:45:40,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:40,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:45:40,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:45:40,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:40" (1/1) ... [2020-09-24 21:45:40,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0614b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:40, skipping insertion in model container [2020-09-24 21:45:40,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:40" (1/1) ... [2020-09-24 21:45:40,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:45:40,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:45:41,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:41,160 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:45:41,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:41,321 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:45:41,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41 WrapperNode [2020-09-24 21:45:41,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:41,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:45:41,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:45:41,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:45:41,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41" (1/1) ... [2020-09-24 21:45:41,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41" (1/1) ... [2020-09-24 21:45:41,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41" (1/1) ... [2020-09-24 21:45:41,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41" (1/1) ... [2020-09-24 21:45:41,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41" (1/1) ... [2020-09-24 21:45:41,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41" (1/1) ... [2020-09-24 21:45:41,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41" (1/1) ... [2020-09-24 21:45:41,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:45:41,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:45:41,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:45:41,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:45:41,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41" (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 21:45:41,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:45:41,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:45:41,554 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:45:41,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:45:41,555 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:45:41,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:45:41,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:45:41,555 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:45:41,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:45:41,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:45:41,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:45:43,000 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:45:43,001 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:45:43,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:43 BoogieIcfgContainer [2020-09-24 21:45:43,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:45:43,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:45:43,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:45:43,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:45:43,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:45:40" (1/3) ... [2020-09-24 21:45:43,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59370878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:43, skipping insertion in model container [2020-09-24 21:45:43,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:41" (2/3) ... [2020-09-24 21:45:43,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59370878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:43, skipping insertion in model container [2020-09-24 21:45:43,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:43" (3/3) ... [2020-09-24 21:45:43,020 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label39.c [2020-09-24 21:45:43,031 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:45:43,045 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:45:43,067 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:45:43,107 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:45:43,108 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:45:43,108 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:45:43,108 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:45:43,108 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:45:43,108 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:45:43,108 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:45:43,109 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:45:43,146 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:45:43,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 21:45:43,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:43,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:43,157 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:43,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:43,164 INFO L82 PathProgramCache]: Analyzing trace with hash 381272735, now seen corresponding path program 1 times [2020-09-24 21:45:43,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:43,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709582955] [2020-09-24 21:45:43,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:43,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:43,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:44,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:44,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 21:45:44,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:44,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-09-24 21:45:44,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:44,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:44,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:44,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 21:45:44,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:45:44,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:44,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:44,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:44,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:44,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:44,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:45:44,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:44,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:44,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:44,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:44,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:44,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:44,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709582955] [2020-09-24 21:45:44,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:44,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:45:44,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808654011] [2020-09-24 21:45:44,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:45:44,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:44,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:45:44,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:45:44,337 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:45:46,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:46,321 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-24 21:45:46,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:45:46,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-09-24 21:45:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:46,365 INFO L225 Difference]: With dead ends: 1104 [2020-09-24 21:45:46,366 INFO L226 Difference]: Without dead ends: 578 [2020-09-24 21:45:46,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 21:45:46,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-24 21:45:46,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-24 21:45:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-24 21:45:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-24 21:45:46,470 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 45 [2020-09-24 21:45:46,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:46,471 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-24 21:45:46,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:45:46,471 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-24 21:45:46,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-24 21:45:46,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:46,478 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:46,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:45:46,479 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:46,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:46,480 INFO L82 PathProgramCache]: Analyzing trace with hash 2073113520, now seen corresponding path program 1 times [2020-09-24 21:45:46,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:46,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686903640] [2020-09-24 21:45:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:46,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:46,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:46,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:46,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:50,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:50,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-24 21:45:50,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:45:50,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3988 [2020-09-24 21:45:50,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:50,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:45:50,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:50,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-24 21:45:50,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:50,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:50,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:50,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:50,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:50,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:50,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 21:45:50,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:50,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:45:50,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:50,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:45:50,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:50,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:50,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:50,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:50,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:50,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:45:50,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:50,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-24 21:45:50,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:50,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:50,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:50,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:45:50,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:51,143 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:51,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686903640] [2020-09-24 21:45:51,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:51,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:51,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559417004] [2020-09-24 21:45:51,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:51,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:51,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:51,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:51,150 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 9 states. [2020-09-24 21:45:54,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:54,265 INFO L93 Difference]: Finished difference Result 1290 states and 1601 transitions. [2020-09-24 21:45:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:45:54,266 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2020-09-24 21:45:54,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:54,271 INFO L225 Difference]: With dead ends: 1290 [2020-09-24 21:45:54,272 INFO L226 Difference]: Without dead ends: 761 [2020-09-24 21:45:54,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:45:54,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-09-24 21:45:54,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 697. [2020-09-24 21:45:54,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-24 21:45:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 863 transitions. [2020-09-24 21:45:54,313 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 863 transitions. Word has length 124 [2020-09-24 21:45:54,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:54,314 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 863 transitions. [2020-09-24 21:45:54,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:54,314 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 863 transitions. [2020-09-24 21:45:54,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-24 21:45:54,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:54,321 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:54,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:45:54,322 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:54,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:54,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1595126062, now seen corresponding path program 1 times [2020-09-24 21:45:54,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:54,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121004741] [2020-09-24 21:45:54,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:54,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:56,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:56,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:58,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:58,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 21:45:58,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:45:58,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4458 [2020-09-24 21:45:58,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:58,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:45:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:45:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:58,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:58,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:58,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:58,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:58,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:58,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 21:45:58,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:58,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:58,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:58,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:45:58,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:59,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:59,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:59,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:59,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:45:59,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:59,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-24 21:45:59,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:59,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:45:59,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:45:59,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:59,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121004741] [2020-09-24 21:45:59,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:59,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:45:59,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932169546] [2020-09-24 21:45:59,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:45:59,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:59,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:45:59,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:45:59,410 INFO L87 Difference]: Start difference. First operand 697 states and 863 transitions. Second operand 12 states. [2020-09-24 21:46:02,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:02,349 INFO L93 Difference]: Finished difference Result 1399 states and 1834 transitions. [2020-09-24 21:46:02,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 21:46:02,351 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-09-24 21:46:02,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:02,367 INFO L225 Difference]: With dead ends: 1399 [2020-09-24 21:46:02,368 INFO L226 Difference]: Without dead ends: 834 [2020-09-24 21:46:02,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:46:02,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-09-24 21:46:02,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 702. [2020-09-24 21:46:02,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-09-24 21:46:02,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 865 transitions. [2020-09-24 21:46:02,437 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 865 transitions. Word has length 134 [2020-09-24 21:46:02,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:02,438 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 865 transitions. [2020-09-24 21:46:02,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:46:02,438 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 865 transitions. [2020-09-24 21:46:02,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-24 21:46:02,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:02,453 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:02,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:46:02,453 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:02,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:02,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1321374614, now seen corresponding path program 1 times [2020-09-24 21:46:02,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:02,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502097193] [2020-09-24 21:46:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:02,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:02,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:02,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:03,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:03,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:03,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:03,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:04,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:04,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:06,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:07,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:07,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:07,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-24 21:46:07,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:46:07,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 21:46:07,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:07,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:46:07,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:46:07,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-24 21:46:07,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:07,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:07,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:07,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:07,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:07,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:07,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:46:07,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:07,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:07,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:07,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:46:07,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:07,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:07,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:07,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:07,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:07,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:07,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:07,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-24 21:46:07,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:07,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:07,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:07,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:07,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:08,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:08,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:46:08,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:08,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-24 21:46:08,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:08,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:08,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:08,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:46:08,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 21:46:08,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502097193] [2020-09-24 21:46:08,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:08,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:46:08,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146625880] [2020-09-24 21:46:08,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:46:08,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:08,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:46:08,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:46:08,338 INFO L87 Difference]: Start difference. First operand 702 states and 865 transitions. Second operand 8 states. [2020-09-24 21:46:10,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:10,329 INFO L93 Difference]: Finished difference Result 1410 states and 1829 transitions. [2020-09-24 21:46:10,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:46:10,330 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 207 [2020-09-24 21:46:10,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:10,342 INFO L225 Difference]: With dead ends: 1410 [2020-09-24 21:46:10,342 INFO L226 Difference]: Without dead ends: 880 [2020-09-24 21:46:10,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:46:10,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-09-24 21:46:10,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 860. [2020-09-24 21:46:10,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2020-09-24 21:46:10,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1076 transitions. [2020-09-24 21:46:10,378 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1076 transitions. Word has length 207 [2020-09-24 21:46:10,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:10,380 INFO L479 AbstractCegarLoop]: Abstraction has 860 states and 1076 transitions. [2020-09-24 21:46:10,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:46:10,380 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1076 transitions. [2020-09-24 21:46:10,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-24 21:46:10,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:10,384 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:10,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:46:10,384 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:10,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:10,385 INFO L82 PathProgramCache]: Analyzing trace with hash -877884703, now seen corresponding path program 1 times [2020-09-24 21:46:10,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:10,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621383790] [2020-09-24 21:46:10,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:10,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:10,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:10,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:11,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:11,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:13,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:15,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:15,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-24 21:46:15,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:46:15,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 21:46:15,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:15,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:46:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-24 21:46:15,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:15,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:15,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:15,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:15,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:15,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:15,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:46:15,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:15,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:46:15,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:15,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:15,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:15,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:15,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:15,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:15,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-24 21:46:15,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:15,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:15,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:15,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:15,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:15,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:15,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:16,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:16,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:46:16,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:16,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-24 21:46:16,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:16,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:16,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:16,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:46:16,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:16,153 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 61 proven. 9 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-24 21:46:16,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621383790] [2020-09-24 21:46:16,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:16,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:46:16,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693853608] [2020-09-24 21:46:16,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:46:16,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:16,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:46:16,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:46:16,157 INFO L87 Difference]: Start difference. First operand 860 states and 1076 transitions. Second operand 9 states. [2020-09-24 21:46:19,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:19,143 INFO L93 Difference]: Finished difference Result 1960 states and 2582 transitions. [2020-09-24 21:46:19,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 21:46:19,144 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 213 [2020-09-24 21:46:19,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:19,153 INFO L225 Difference]: With dead ends: 1960 [2020-09-24 21:46:19,153 INFO L226 Difference]: Without dead ends: 1272 [2020-09-24 21:46:19,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:46:19,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2020-09-24 21:46:19,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1216. [2020-09-24 21:46:19,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2020-09-24 21:46:19,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1508 transitions. [2020-09-24 21:46:19,197 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1508 transitions. Word has length 213 [2020-09-24 21:46:19,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:19,197 INFO L479 AbstractCegarLoop]: Abstraction has 1216 states and 1508 transitions. [2020-09-24 21:46:19,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:46:19,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1508 transitions. [2020-09-24 21:46:19,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-24 21:46:19,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:19,201 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:19,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:46:19,202 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:19,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:19,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1895586593, now seen corresponding path program 1 times [2020-09-24 21:46:19,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:19,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368634302] [2020-09-24 21:46:19,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:19,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:19,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:19,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:19,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:21,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:21,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-24 21:46:21,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:46:21,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2342 [2020-09-24 21:46:21,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:46:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:46:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-09-24 21:46:21,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:21,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:21,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:21,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:21,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:21,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:21,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:46:21,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:21,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:46:21,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:21,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:46:21,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:21,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:21,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:21,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:21,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:21,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:21,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:21,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-24 21:46:21,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:21,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:21,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:21,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 21:46:21,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:21,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:22,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:22,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:22,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:22,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 21:46:22,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:22,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-09-24 21:46:22,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:22,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 21:46:22,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:22,762 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-24 21:46:22,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368634302] [2020-09-24 21:46:22,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:22,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:46:22,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866296788] [2020-09-24 21:46:22,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:46:22,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:22,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:46:22,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:46:22,765 INFO L87 Difference]: Start difference. First operand 1216 states and 1508 transitions. Second operand 9 states. [2020-09-24 21:46:26,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:26,053 INFO L93 Difference]: Finished difference Result 2922 states and 3886 transitions. [2020-09-24 21:46:26,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:46:26,054 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 246 [2020-09-24 21:46:26,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:26,064 INFO L225 Difference]: With dead ends: 2922 [2020-09-24 21:46:26,064 INFO L226 Difference]: Without dead ends: 1854 [2020-09-24 21:46:26,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:46:26,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2020-09-24 21:46:26,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1681. [2020-09-24 21:46:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1681 states. [2020-09-24 21:46:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2082 transitions. [2020-09-24 21:46:26,130 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2082 transitions. Word has length 246 [2020-09-24 21:46:26,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:26,131 INFO L479 AbstractCegarLoop]: Abstraction has 1681 states and 2082 transitions. [2020-09-24 21:46:26,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:46:26,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2082 transitions. [2020-09-24 21:46:26,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-24 21:46:26,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:26,137 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:26,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:46:26,138 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:26,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:26,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1341705890, now seen corresponding path program 1 times [2020-09-24 21:46:26,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:26,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282317293] [2020-09-24 21:46:26,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:26,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:26,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:26,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:28,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:28,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking...