/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_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:44:43,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:44:43,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:44:43,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:44:43,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:44:43,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:44:43,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:44:43,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:44:43,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:44:43,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:44:43,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:44:43,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:44:43,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:44:43,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:44:43,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:44:43,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:44:43,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:44:43,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:44:43,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:44:43,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:44:43,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:44:43,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:44:43,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:44:43,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:44:43,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:44:43,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:44:43,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:44:43,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:44:43,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:44:43,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:44:43,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:44:43,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:44:43,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:44:43,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:44:43,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:44:43,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:44:43,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:44:43,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:44:43,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:44:43,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:44:43,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:44:43,588 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 21:44:43,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:44:43,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:44:43,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:44:43,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:44:43,619 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:44:43,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:44:43,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:44:43,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:44:43,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:44:43,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:44:43,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:44:43,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:44:43,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:44:43,621 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:44:43,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:44:43,621 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:44:43,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:44:43,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:44:43,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:44:43,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:44:43,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:44:43,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:44:43,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:44:43,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:44:43,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:44:43,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:44:43,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:44:43,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:44:43,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:44:43,624 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 21:44:44,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:44:44,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:44:44,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:44:44,145 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:44:44,146 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:44:44,147 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label15.c [2020-09-24 21:44:44,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5008e86d0/dfeb616dc28243ac8ff21c21cf0430e1/FLAG527af847b [2020-09-24 21:44:44,858 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:44:44,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label15.c [2020-09-24 21:44:44,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5008e86d0/dfeb616dc28243ac8ff21c21cf0430e1/FLAG527af847b [2020-09-24 21:44:45,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5008e86d0/dfeb616dc28243ac8ff21c21cf0430e1 [2020-09-24 21:44:45,159 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:44:45,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:44:45,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:45,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:44:45,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:44:45,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:45" (1/1) ... [2020-09-24 21:44:45,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@180772d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:45, skipping insertion in model container [2020-09-24 21:44:45,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:45" (1/1) ... [2020-09-24 21:44:45,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:44:45,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:44:45,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:45,837 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:44:46,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:46,040 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:44:46,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46 WrapperNode [2020-09-24 21:44:46,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:46,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:44:46,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:44:46,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:44:46,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46" (1/1) ... [2020-09-24 21:44:46,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46" (1/1) ... [2020-09-24 21:44:46,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46" (1/1) ... [2020-09-24 21:44:46,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46" (1/1) ... [2020-09-24 21:44:46,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46" (1/1) ... [2020-09-24 21:44:46,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46" (1/1) ... [2020-09-24 21:44:46,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46" (1/1) ... [2020-09-24 21:44:46,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:44:46,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:44:46,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:44:46,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:44:46,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46" (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 21:44:46,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:44:46,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:44:46,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:44:46,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:44:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:44:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:44:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:44:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:44:46,247 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:44:46,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:44:46,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:44:47,697 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:44:47,697 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:44:47,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:47 BoogieIcfgContainer [2020-09-24 21:44:47,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:44:47,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:44:47,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:44:47,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:44:47,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:44:45" (1/3) ... [2020-09-24 21:44:47,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50892463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:47, skipping insertion in model container [2020-09-24 21:44:47,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:46" (2/3) ... [2020-09-24 21:44:47,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50892463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:47, skipping insertion in model container [2020-09-24 21:44:47,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:47" (3/3) ... [2020-09-24 21:44:47,716 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label15.c [2020-09-24 21:44:47,727 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:44:47,738 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:44:47,763 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:44:47,797 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:44:47,797 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:44:47,797 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:44:47,798 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:44:47,798 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:44:47,798 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:44:47,798 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:44:47,798 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:44:47,828 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:44:47,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 21:44:47,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:47,838 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] [2020-09-24 21:44:47,838 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:47,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:47,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1814812065, now seen corresponding path program 1 times [2020-09-24 21:44:47,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:47,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600401424] [2020-09-24 21:44:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:48,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:48,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:48,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:48,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 21:44:48,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:44:48,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-09-24 21:44:48,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:48,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:44:48,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:48,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 21:44:48,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:44:48,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:48,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:48,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:48,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:48,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:48,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 21:44:48,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:48,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:48,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:48,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:44:48,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:48,753 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 21:44:48,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600401424] [2020-09-24 21:44:48,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:44:48,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:44:48,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953559604] [2020-09-24 21:44:48,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:44:48,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:48,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:44:48,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:44:48,786 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:44:50,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:50,736 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-24 21:44:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:44:50,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-24 21:44:50,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:50,772 INFO L225 Difference]: With dead ends: 1104 [2020-09-24 21:44:50,773 INFO L226 Difference]: Without dead ends: 578 [2020-09-24 21:44:50,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:44:50,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-24 21:44:50,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-24 21:44:50,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-24 21:44:50,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-24 21:44:50,890 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 29 [2020-09-24 21:44:50,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:50,891 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-24 21:44:50,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:44:50,891 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-24 21:44:50,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-24 21:44:50,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:50,897 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:50,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:44:50,897 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:50,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:50,898 INFO L82 PathProgramCache]: Analyzing trace with hash -908534672, now seen corresponding path program 1 times [2020-09-24 21:44:50,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:50,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302258394] [2020-09-24 21:44:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:50,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:51,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:51,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:51,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:51,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:53,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 21:44:53,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:44:53,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2687 [2020-09-24 21:44:53,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:53,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:44:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-24 21:44:53,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:53,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:53,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:53,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:53,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:53,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 21:44:53,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:44:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:44:53,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:53,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:53,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:54,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:44:54,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:54,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-24 21:44:54,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:54,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:44:54,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:54,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302258394] [2020-09-24 21:44:54,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:54,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:44:54,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497899452] [2020-09-24 21:44:54,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:44:54,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:54,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:44:54,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:44:54,288 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 9 states. [2020-09-24 21:45:01,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:01,509 INFO L93 Difference]: Finished difference Result 1286 states and 1594 transitions. [2020-09-24 21:45:01,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:45:01,510 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-09-24 21:45:01,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:01,516 INFO L225 Difference]: With dead ends: 1286 [2020-09-24 21:45:01,517 INFO L226 Difference]: Without dead ends: 757 [2020-09-24 21:45:01,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 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 21:45:01,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2020-09-24 21:45:01,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 695. [2020-09-24 21:45:01,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-24 21:45:01,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 859 transitions. [2020-09-24 21:45:01,593 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 859 transitions. Word has length 108 [2020-09-24 21:45:01,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:01,596 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 859 transitions. [2020-09-24 21:45:01,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:01,597 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 859 transitions. [2020-09-24 21:45:01,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-24 21:45:01,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:01,616 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:01,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:45:01,618 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:01,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:01,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1682680010, now seen corresponding path program 1 times [2020-09-24 21:45:01,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:01,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835097438] [2020-09-24 21:45:01,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:01,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:02,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:02,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:03,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:03,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-24 21:45:03,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:45:03,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1917 [2020-09-24 21:45:03,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:03,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:03,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 21:45:03,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-24 21:45:03,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:03,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:03,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:03,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:03,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:03,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:45:03,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:45:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:45:03,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:03,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:03,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:03,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:03,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:45:03,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:03,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 21:45:03,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:03,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 21:45:03,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:03,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:45:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:03,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:04,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 21:45:04,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:04,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-24 21:45:04,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:04,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:04,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:04,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 21:45:04,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:04,431 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:04,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835097438] [2020-09-24 21:45:04,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:04,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:45:04,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536074587] [2020-09-24 21:45:04,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:04,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:04,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:04,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:04,436 INFO L87 Difference]: Start difference. First operand 695 states and 859 transitions. Second operand 7 states. [2020-09-24 21:45:06,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:06,804 INFO L93 Difference]: Finished difference Result 1565 states and 2075 transitions. [2020-09-24 21:45:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:45:06,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-09-24 21:45:06,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:06,818 INFO L225 Difference]: With dead ends: 1565 [2020-09-24 21:45:06,818 INFO L226 Difference]: Without dead ends: 1035 [2020-09-24 21:45:06,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:45:06,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2020-09-24 21:45:06,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1005. [2020-09-24 21:45:06,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-09-24 21:45:06,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1295 transitions. [2020-09-24 21:45:06,874 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1295 transitions. Word has length 237 [2020-09-24 21:45:06,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:06,879 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1295 transitions. [2020-09-24 21:45:06,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:06,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1295 transitions. [2020-09-24 21:45:06,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-24 21:45:06,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:06,887 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:06,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:45:06,887 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:06,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:06,888 INFO L82 PathProgramCache]: Analyzing trace with hash -750651840, now seen corresponding path program 1 times [2020-09-24 21:45:06,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:06,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703472979] [2020-09-24 21:45:06,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:07,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:10,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:10,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-09-24 21:45:10,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:45:10,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3265 [2020-09-24 21:45:10,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:45:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:10,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-09-24 21:45:10,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:10,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:10,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:10,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:10,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:10,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:10,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:45:10,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:10,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:10,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:10,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:10,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:10,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:45:10,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:10,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 21:45:10,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:10,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:10,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:45:10,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:10,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:45:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:10,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:10,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:10,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 21:45:10,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:10,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-24 21:45:10,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 21:45:10,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 92 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:10,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703472979] [2020-09-24 21:45:10,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:10,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:45:10,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408329199] [2020-09-24 21:45:10,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:45:10,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:10,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:45:10,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:45:10,980 INFO L87 Difference]: Start difference. First operand 1005 states and 1295 transitions. Second operand 10 states. [2020-09-24 21:45:14,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:14,663 INFO L93 Difference]: Finished difference Result 2557 states and 3683 transitions. [2020-09-24 21:45:14,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:45:14,667 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 243 [2020-09-24 21:45:14,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:14,684 INFO L225 Difference]: With dead ends: 2557 [2020-09-24 21:45:14,684 INFO L226 Difference]: Without dead ends: 1717 [2020-09-24 21:45:14,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:45:14,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2020-09-24 21:45:14,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1507. [2020-09-24 21:45:14,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1507 states. [2020-09-24 21:45:14,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1918 transitions. [2020-09-24 21:45:14,783 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1918 transitions. Word has length 243 [2020-09-24 21:45:14,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:14,783 INFO L479 AbstractCegarLoop]: Abstraction has 1507 states and 1918 transitions. [2020-09-24 21:45:14,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:45:14,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1918 transitions. [2020-09-24 21:45:14,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-24 21:45:14,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:14,789 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:14,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:45:14,790 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:14,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:14,790 INFO L82 PathProgramCache]: Analyzing trace with hash 511855838, now seen corresponding path program 1 times [2020-09-24 21:45:14,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:14,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206855086] [2020-09-24 21:45:14,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:14,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:15,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:15,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:15,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:17,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:17,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:17,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:18,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:18,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:19,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:19,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-24 21:45:19,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:45:19,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:45:19,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:45:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:45:19,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:19,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:19,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:19,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:19,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:19,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:45:19,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:45:19,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:20,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:20,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:20,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:20,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:45:20,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:20,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-24 21:45:20,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:45:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:20,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:45:20,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:20,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 21:45:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:20,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:20,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:20,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:20,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 21:45:20,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:20,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-09-24 21:45:20,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:20,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 21:45:20,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 52 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:21,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206855086] [2020-09-24 21:45:21,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:21,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:45:21,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746395951] [2020-09-24 21:45:21,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:45:21,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:21,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:45:21,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:45:21,326 INFO L87 Difference]: Start difference. First operand 1507 states and 1918 transitions. Second operand 13 states. [2020-09-24 21:45:26,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:26,361 INFO L93 Difference]: Finished difference Result 3678 states and 4954 transitions. [2020-09-24 21:45:26,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 21:45:26,362 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 253 [2020-09-24 21:45:26,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:26,375 INFO L225 Difference]: With dead ends: 3678 [2020-09-24 21:45:26,376 INFO L226 Difference]: Without dead ends: 2302 [2020-09-24 21:45:26,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-09-24 21:45:26,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2020-09-24 21:45:26,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2055. [2020-09-24 21:45:26,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2055 states. [2020-09-24 21:45:26,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 2720 transitions. [2020-09-24 21:45:26,448 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 2720 transitions. Word has length 253 [2020-09-24 21:45:26,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:26,449 INFO L479 AbstractCegarLoop]: Abstraction has 2055 states and 2720 transitions. [2020-09-24 21:45:26,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:45:26,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 2720 transitions. [2020-09-24 21:45:26,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-24 21:45:26,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:26,456 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:26,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:45:26,456 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:26,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:26,457 INFO L82 PathProgramCache]: Analyzing trace with hash -648798357, now seen corresponding path program 1 times [2020-09-24 21:45:26,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:26,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943313401] [2020-09-24 21:45:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:26,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:26,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:27,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:28,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:28,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:28,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:28,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-09-24 21:45:28,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:45:28,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2307 [2020-09-24 21:45:28,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:28,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:28,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:45:28,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-24 21:45:28,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:28,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:28,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:28,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:28,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:28,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:28,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:45:28,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:28,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:28,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:28,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:45:28,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:28,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:28,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:29,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:29,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 21:45:29,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:29,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-24 21:45:29,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:29,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:29,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:29,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-24 21:45:29,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:29,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 21:45:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:29,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:29,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:29,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 21:45:29,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:29,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 21:45:29,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:45:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 21:45:29,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:45:29,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 26 proven. 86 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 21:45:29,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943313401] [2020-09-24 21:45:29,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:29,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:45:29,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110667995] [2020-09-24 21:45:29,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:29,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:29,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:29,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:29,359 INFO L87 Difference]: Start difference. First operand 2055 states and 2720 transitions. Second operand 7 states. [2020-09-24 21:45:31,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:31,482 INFO L93 Difference]: Finished difference Result 4506 states and 6259 transitions. [2020-09-24 21:45:31,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:45:31,483 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-09-24 21:45:31,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:31,496 INFO L225 Difference]: With dead ends: 4506 [2020-09-24 21:45:31,497 INFO L226 Difference]: Without dead ends: 2619 [2020-09-24 21:45:31,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:45:31,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2020-09-24 21:45:31,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2377. [2020-09-24 21:45:31,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2377 states. [2020-09-24 21:45:31,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 2941 transitions. [2020-09-24 21:45:31,583 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 2941 transitions. Word has length 263 [2020-09-24 21:45:31,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:31,584 INFO L479 AbstractCegarLoop]: Abstraction has 2377 states and 2941 transitions. [2020-09-24 21:45:31,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 2941 transitions. [2020-09-24 21:45:31,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-09-24 21:45:31,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:31,593 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 21:45:31,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:45:31,594 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:31,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:31,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1726897106, now seen corresponding path program 1 times [2020-09-24 21:45:31,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:31,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858905706] [2020-09-24 21:45:31,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:31,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:31,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:33,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:33,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking...